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Introduction
Li Tao received his PhD degree in 2019 from the department of Chemistry, Hunan University. He is currently the assistant professor in Hunan University. His interests include electrocatalysis, fuel cell and plasma technology .
Skills and Expertise
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September 2020 - present
Publications
Publications (98)
Hydrogen electrode reactions, including hydrogen evolution reactions and hydrogen oxidation reactions, are fundamental and crucial within aqueous electrochemistry. Particularly in energy‐related electrocatalysis processes, there is a consistent involvement of hydrogen‐related electrochemical processes, underscoring the need for in‐depth study. This...
The electrosynthesis of multi‐carbon chemicals from excess carbon dioxide (CO2) is an area of great interest for research and commercial applications. However, improving both the yield of CO2‐to‐ethanol conversion and the stability of the catalyst at the same time is proving to be a challenging issue. Here it is proposed to stabilize active Cu(I) a...
Methanol oxidation plays a central role to implement sustainable energy economy, which is restricted by the sluggish reaction kinetics due to the multi‐electron transfer process accompanied by numerous sequential intermediate. In this study, an efficient cascade methanol oxidation reaction is catalyzed by single‐Ir‐atom catalyst at ultra‐low potent...
Methanol oxidation plays a central role to implement sustainable energy economy, which is restricted by the sluggish reaction kinetics due to the multi‐electron transfer process accompanied by numerous sequential intermediate. In this study, an efficient cascade methanol oxidation reaction is catalyzed by single‐Ir‐atom catalyst at ultra‐low potent...
Single atom catalysts with defined local structures and favorable surface microenvironments are significant for overcoming slow kinetics and accelerating O2 electroreduction. Here, enriched tip‐like FeN4 sites (T−Fe SAC) on spherical carbon surfaces were developed to investigate the change in surface microenvironments and catalysis behavior. Finite...
Single atom catalysts with defined local structures and favorable surface microenvironments are significant for overcoming slow kinetics and accelerating O2 electroreduction. Here, enriched tip‐like FeN4 sites (T‐Fe SAC) on spherical carbon surfaces were developed to investigate the change in surface microenvironments and catalysis behavior. Finite...
Methanol steam reforming (MSR) provides an alternative way for efficient production and safe transportation of hydrogen but requires harsh conditions and complicated purification processes. In this work, an efficient electrochemical‐assisted MSR reaction for pure H2 production at lower temperature (~140 °C) is developed by coupling the electrocatal...
To cope with the urgent environmental pressure and tight energy demand, using electrocatalytic methods to drive the reduction of carbon dioxide molecules and produce a variety of fuels and chemicals, is one of the effective pathways to achieve carbon neutrality. In recent years, many significant advances in the study of the electrochemical carbon d...
Methanol steam reforming (MSR) provides an alternative way for efficient production and safe transportation of hydrogen but requires harsh conditions and complicated purification processes. In this work, an efficient electrochemical‐assisted MSR reaction for pure H2 production at lower temperature (~140 °C) is developed by coupling the electrocatal...
Phosphoric acid (PA) is a vital proton-conducting medium for high-temperature proton exchange membrane fuel cells (HT-PEMFCs); however, regulating its distribution to decrease poisoning on the electrocatalysts and maintain elevated reactivity durability remains a significant challenge. In this work, defective g-C3N4 (D-C3N4) was incorporated into P...
The dehydrogenation reaction of bioderived ethanol is of particular interest for the synthesis of fuels and value-added chemicals. However, this reaction historically suffered from high energy consumption (>260 °C or >0.8 V) and low efficiency. Herein, the efficient conversion of alcohol to hydrogen and aldehyde is achieved by integrating the therm...
High‐temperature proton exchange membrane fuel cells (HT‐PEMFCs) are crucial in future energy systems. However, the activity and stability of the electrocatalysts are severely restricted by high temperature and phosphoric acid poisoning. Herein, PtCe alloy as oxygen reduction reaction (ORR) electrocatalyst for HT‐PEMFCs exhibits fantastic performan...
Water electrolysis is recognized as a green hydrogen production technology, but the high voltage required for anodic oxygen evolution reaction restricts the practical application. In this work, a Fe(II)/Fe(III) redox mediated SO2 conversion is proposed to couple the cathodic hydrogen evolution reaction to achieve sulfur dioxide conversion and hydro...
The durability degradation during stack‐operating conditions seriously undermines the lifetime and performance of fuel cell. To alleviate the rapid potential rise and performance degradation, herein, an ingenious anode design is proposed to match the working temperature of high‐temperature proton exchange membrane fuel cells (HT‐PEMFCs) with pallad...
High-temperature direct methanol fuel cells (HT-DMFCs) show extensive application prospects in the future. However, the sluggish kinetics of oxygen reduction reaction (ORR) and unsatisfied methanol tolerance at cathode severely restrict its application. Herein, phosphotungstic acid H3PW12O40 (HPW) is exploited to promote the methanol tolerance abil...
Aqueous redox-active organic materials-base electrolytes are sustainable alternatives to vanadium-based electrolyte for redox flow batteries (RFBs) due to the advantages of high ionic conductivity, environmentally benign, safety and low cost. However, the underexplored redox properties of organic materials and the narrow thermodynamic electrolysis...
Efficient ethanol oxidation reaction (EOR) is challenging due to the multiple reaction steps required to accomplish full oxidation to CO2 in fuel cells. High‐entropy materials with the adjustable composition and unique chemical structure provide a large configurational space for designing high‐performance electrocatalysts. Herein, a new class of st...
The rational structure design and active-site regulation of catalysts is crucial for high energy output. Herein, B, F co-doped Fe−N−C embedded in a flexible and free-standing hierarchical porous carbon framework (Fe-SA-FPCS) was reported. Owing to the synergism of optimized intrinsic activity, fast mass transfer and well exposed active sites, the F...
Better understanding of electrochemical reaction behaviors of hydrazine electrooxidation at metal phosphides has long been desired and the optimization of reaction kinetics has been proved to be operable. Herein, the dehydrogenation kinetics of hydrazine electrooxidation at Ni2P is adjusted by Co as the (Ni0.6Co0.4)2P catalyzes HzOR effectively wit...
Solid polymer electrolyzer (SPE), which directly uses pure water as electrolyte, holds great promise for green hydrogen production, yet developing a durable and active electrocatalyst for a proton-rich anode remains a bottleneck issue owing to the high catalyst dissolution under polarization potential. Here, proton and electron co-doping was employ...
Integrating biomass upgrading and hydrogen production in an electrocatalytic system is attractive both environmentally and in terms of sustainability. Conventional electrolyser systems coupling anodic biosubstrate electrooxidation with hydrogen evolution reaction usually require electricity input. Herein, we describe the development of an electroca...
Hydrogen production through water electrolysis is of considerable interest for converting the intermittent electricity generated by renewable energy sources into storable chemical energy, but the typical water electrolysis process requires a high working voltage (>1.23 V) and produces oxygen at the anode in addition to hydrogen at the cathode. Here...
Integrating biomass upgrading and hydrogen production in an electrocatalytic system is attractive both environmentally and sustainably. Conventional electrolyzer systems coupling anodic bio-substrate electrooxidation with hydrogen evolution reaction usually require electricity input. In this work, we develop a fuel cell electrocatalytic system achi...
The chemical looping process is a promising technology for high-purity hydrogen production. However, this process is operated at high temperature (e.g., >600°C), leading to rigorous requirements in the aspects of reactor design and oxygen carriers. Here, we develop a room-temperature electrocatalytic chemical looping hydrogen production system usin...
High-temperature proton exchange membrane fuel cells (HT-PEMFCs) bring new opportunities for portable power generation due to their outstanding advantages such as high tolerance to fuel/air impurities and simplified heat/water management. However, carbon-supported nanostructured Pt-based catalysts running at temperatures over 150°C are challenged b...
In high‐temperature proton exchange membrane fuel cells (HT‐PEMFCs), the poisoning of Pt by phosphoric species severely affects the kinetics of the oxygen reduction reaction, which restricts their commercialized application. Herein, for the first time, the phosphate tolerance of PtFe ordered intermetallic alloys is enhanced by a doping‐modulated st...
High‐temperature polymer electrolyte membrane fuel cells (HT‐PEMFCs) play an important role in the future hydrogen application system. However, there are still many issues of HT‐PEMFCs, especially on performance and durability, to be solved. Massive platinum usage is one of the most intractable issues. Herein, iron phosphide to platinum‐based catal...
The structural design and atomic adjustment of the catalyst are the main factors that regulate the intrinsic electrocatalytic activity. Herein, we report a novel and facile strategy of synthesizing three-dimensional porous carbon network by polymer-assisted molding strategy. The porous carbon framework with Co-CoF2 and carbon nanotubes ([email prot...
High-temperature proton-exchange membrane fuel cells (HT-PEMFCs) have shown a broad prospect of applications due to the enhanced reaction kinetics and simplified supporting system. However, the proton conductor, phosphoric acid, tends to poison the active sites of Pt, resulting in high Pt consumption. Herein, Pt nanoparticles anchored on SiO2-modif...
Water electrolysis is a sustainable technology for hydrogen production since this process can utilize the intermittent electricity generated by renewable energy such as solar, wind, and hydro. However, the large‐scale application of this process is restricted by the high electricity consumption due to the large potential gap (>1.23 V) between the a...
The introduction of composite components to construct heterointerfaces is an important way to improve the electrocatalytic performance of materials. However, selecting appropriate components to accelerate the elementary reaction rates of the hydrogen evolution reaction (HER) in alkaline media is still in challenge. Here, a Ni‐CeF3‐VN multi‐componen...
High‐entropy oxides (HEOs), a new concept of entropy stabilization, exhibit unique structures and fascinating properties, and are thus important class of materials with significant technological potential. However, the conventional high‐temperature synthesis techniques tend to afford micron‐scale HEOs with low surface area, and the catalytic activi...
Electronic regulation of carbon is essential for developing non-platinum electrocatalysts for oxygen reduction reactions (ORRs). In this work, we used Cs to further regulate the electronic structure of nitrogen-doped (N-doped) carbon. The Cs atoms coordinated with the nitrogen atom in the N-doped carbon for injecting electrons into the carbon conju...
Recovering precious metals (PMs) from waste products provides a promising solution for sustainability. Bian et al. in Nature Sustainability show a process for selective extraction of PMs from waste products and ore by simple photo-catalytic oxidation, without using strong acids or toxic cyanide.
Defect-rich high-entropy oxides (HEOs) nanosheets with high surface area are synthesized through a plasma strategy under low-temperature. The unique structural and compositional advantages endow the HEOs nanosheets with superior electrocatalytic activity for 5-hydroxymethylfurfural oxidation.
Abstract
High-entropy oxides (HEOs), a new concept of e...
High-entropy alloys (HEAs) have been widely studied due to their unconventional compositions and unique physicochemical properties for various applications. Herein, for the first time, we propose a surface strain strategy to tune the electrocatalytic activity of HEAs for methanol oxidation reaction (MOR). High-resolution aberration-corrected scanni...
Nitrogen is an essential nutrient for every organism and the nitrogen cycle is significant for human society. Nitrogenous nucleophile electrooxidation reaction (NOR) plays a vital role in the degradation and transformation of available nitrogen. Here, focusing on NOR based on β‐Ni(OH) 2 electrode, we decipher the transformation mechanism of nitroge...
During urea electrooxidation over a Ni(OH)2 electrode the dehydrogenation reaction from β‐Ni(OH)2 to β‐Ni(OH)O can lead to spontaneous urea dehydrogenation. Spontaneous intramolecular coupling of the N−N bond and hydration of urea dehydrogenation intermediates play important roles in the oxidation path from urea to N2 and CO2.
Abstract
The nitroge...
Efficient and sustainable clean energy technology is an urgent need to solve energy crisis and alleviate environmental pollution. Reasonable design of electrode materials can effectively improve the performance of electrochemical energy storage and conversion devices. As an effective method to control the properties of electrode materials, defects...
The use of nitrogen fertilizers has been estimated to have supported 27% of the world’s population over the past century. Urea (CO(NH2)2) is conventionally synthesized through two consecutive industrial processes, N2 + H2 → NH3 followed by NH3 + CO2 → urea. Both reactions operate under harsh conditions and consume more than 2% of the world’s energy...
The exact role of defect structure on transition-metal compound for electrocatalytic OER reaction, which is a very dynamic process, remains unclear. Studying the structure-activity relationship of defective electrocatalysts under operando conditions is crucial for understanding their intrinsic reaction mechanism and dynamic behavior of defect sites...
Exploring cost-effective and high-performance oxygen reduction reaction(ORR) electrocatalysts to replace precious platinum-based materials is crucial for developing electrochemical energy conversion devices but remains a great challenge. Herein, Fe single atoms anchored on nanosheet-linked, defect-rich, highly N-doped 3D porous carbon(Fe-SAs/NLPC)...
The commercialization of fuel cells, such as proton exchange membrane fuel cells and direct methanol/formic acid fuel cells, is hampered by their poor stability, high cost, fuel crossover, and the sluggish kinetics of platinum (Pt) and Pt‐based electrocatalysts for both the cathodic oxygen reduction reaction (ORR) and the anodic hydrogen oxidation...
Direct formic acid fuel cell (DFAFC) has been considered as a promising energy conversion device for stationary and mobile applications. Advanced platinum (Pt) electrocatalysts for formic acid oxidation reaction (FAOR) are critical for DFAFC. However, the oxidation of formic acid on Pt catalysts often occurs via a dual pathway mechanism, which hind...
Along with the increasing aggravation of energy and environmental problems, the demand and utilization of renewable energy have increased. The rational design of advanced functional materials serves as a critical point for the improvement of performance and the practical application in renewable energy devices. Layered double hydroxides (LDHs) with...
Selenide with narrow band gap can be used as a promising photoelectrode in photoelectrochemical (PEC) water splitting. However, the applications of selenides in high-performance PEC devices are greatly hindered via inducing the oxygen into the lattice and generating the high-density defects, which result in their environmental unstability and high...
The reasonable design of electrode materials for rechargeable batteries plays an important role in promoting the development of renewable energy technology. With the in‐depth understanding of the mechanisms underlying electrode reactions and the rapid development of advanced technology, the performance of batteries has significantly been optimized...
2,5‐Furandicarboxylic acid was obtained from the electrooxidation of 5‐hydroxymethylfurfural (HMF) with non‐noble metal‐based catalysts. Moreover, combining the biomass oxidation with the hydrogen evolution reaction (HER) increased the energy conversion efficiency of an electrolyzer and also generated value‐added products at both electrodes. Here,...
Eine kohlenstoffgekoppelte Nickelnitrid‐Nanoschicht wurde als effizienter Elektrokatalysator für die Oxidation von 5‐Hydroxymethylfurfural (HMF) eingesetzt. Mittels In‐situ‐SFG‐Spektroskopie wurde der Oxidationsprozess untersucht und bestätigt, dass die Reaktion über 5‐Hydroxymethyl‐2‐furancarbonsäure (HMFCA) verläuft.
Abstract
2,5‐Furandicarboxyl...
Electrocatalysis is the most important electrode reactions for many energy storage and conversion devices, which are considered a key part of the resolution of the energy crisis. Toward this end, design of efficient electrocatalysts is of critical significance. While extensive research has been extended to develop excellent electrocatalysts, the fu...
Gas-involving electrochemical reactions, like oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER), are critical processes for energy-saving, environment-friendly energy conversion and storage technologies which gain increasing attention. The development of according electrocatalysts is key to boos...
Electrochemical reactions were widely used in energy storage and conversion devices. The development of low-cost, highly efficient and stable electrocatalyst is essential to a large-scale application of energy storage and conversion devices. Recently, emerging plasma technology has been employed as one of the practical ways to synthesize and modify...
Electrocatalysis is dominated by reaction at the solid–liquid–gas interface; surface properties of electrocatalysts determine the electrochemical behavior. The surface charge of active sites on catalysts modulate adsorption and desorption of intermediates. However, there is no direct evidence to bridge surface charge and catalytic activity of activ...
Single‐atom catalysts (SACs) have attracted great attention owing to their maximum atomic utilization and high catalytic performance in electrochemical reactions. But the synthesis of SACs is not easy due to large surface energies of single atomic metal sites which often lead to their aggregation. The defects on supports can serve as anchor sites t...
Two-dimensional layered molybdenum disulfide (MoS2) is a promising catalyst for hydrogen evolution reaction (HER), and a good replacement for platinum (Pt) in elelctrochemical water splitting. Most transition metal dichalcogenides (TMDs) show excellent catalytic activity, which stems from their active sites located along the edges. However, small d...
Electrocatalysis is dominated by reaction at the solid–liquid‐gas interface, and the surface properties of electrocatalysts determine the electrochemical behavior. The surface charge (electronic properties) of active sites on catalysts can significantly modulate the adsorption and desorption of intermediates and tune the electrocatalysis. However,...
Porous and amorphous materials are extensively studied in various applications on account of their high surface area and catalytic active sites. In this work, we for the first time came up with a convenient and effective method for selectively etching the ampho-teric Al and sulfurization of the CoAl-LDH in one step (at room temperature) to synthesi...
Kun Gao Bin Wang Li Tao- [...]
Liangti Qu
N‐doped carbon nanomaterials have rapidly grown as the most important metal‐free catalysts in a wide range of chemical and electrochemical reactions. This current report summarizes the latest advances in N‐doped carbon electrocatalysts prepared by N mono‐doping and co‐doping with other heteroatoms. The structure–performance relationship of these ma...
Proper design of support materials is an important approach to improve the utilization efficiency and regulate the electronic properties of Pt electrocatalysts. Herein, we have successfully prepared ultrathin WO3 nanosheets...
With the over‐consumption of traditional fossil resources and increasing energy demand, major concerns have been raised over the security of our energy future. Developing sustainable, fossil‐free pathways to optimize the traditional energy system is urgently needed. To dissolve this problem, tremendous progress have been made and carbon‐based metal...
Silicon (Si) requires a protection layer to maintain stable and long‐time photoanodic reaction. However, poor charge separation and transfer are key constraint factors in protection layer/Si photoanodes that reduce their water‐splitting efficiency. Here, a simultaneous enhancement of charge separation and transfer in Nb‐doped NiOx/Ni/black‐Si photo...
The proper structure design and defect engineering are of essential importance to develop advanced electrocatalysts for the oxygen reduction reaction (ORR), which is a critical reaction in both fundamental science and industrial applications. Herein, a three-dimensional carbon electrocatalyst is prepared by in-situ linking carbon polyhedrons with n...
Oxygen reduction reaction (ORR) is a crucial process for several significant energy conversion and storage devices, such as metal-air batteries and fuel cells. However, the sluggish kinetics caused by huge activation energy barriers limit the performance. Platinum (Pt) and Pt-based catalysts are still the most efficient catalysts for ORR. Unfortuna...
Renewable energy technology has been considered as a “MUST” option to lower the use of fossil fuels for industry and daily life. Designing critical and sophisticated materials is of great importance in order to realize high-performance energy technology. Typically, efficient synthesis and soft surface modification of nanomaterials are important for...
First-principles calculations based on van der Waals (vdW) corrected density functional theory (DFT) are firstly employed to investigate the adsorption of methanol (CH3OH) gas molecule on pristine and X-doped phosphorene (X=B, C, N and O). The CH3OH gas molecule is placed on the top of different phosphorene surfaces, the whole adsorption systems ar...
Black phosphorus (BP) has recently arisen researchers’ great interest as promising anode materials for sodium-ion battery (SIB), owing to its high theoretical capacity (2596 mAh g-1) and good electric conductivity (about 300 S m-1). However, the large volume variation during electrochemical cycling makes it difficult for practical application. Here...
Developing efficient non-noble metal electrocatalysts for oxygen evolution reaction (OER) is still a crucial issue for renewable energy technologies. Herein, we report a core-shell-like catalyst of amorphous cobalt borate nanosheets growing on metallic cobalt deposited on Ti mesh (Co@Co-Bi/Ti) by an in-situ conversion strategy. Benefiting from the...
Metal-organic-frameworks (MOFs), in which metal ions are single-atomically dispersed, are regarded as one of the most promising single-atom doped catalysts. Co-based species have been considered as a potential candidate to replace the precious RuO2 to electrocatalyze oxygen evolution reaction (OER). Zeolitic imidazolate frameworks-67 (ZIF-67), a Co...
The activity of electrocatalysts strongly depends on the number of active sites, which can be increased by downsizing electrocatalysts. Single-atom catalysts have attracted special attention due to atomic-scale active sites. However, it is a huge challenge to obtain atomic-scale CoOx catalysts. The Co-based metal–organic frameworks (MOFs) own atomi...
Electrocatalytic water splitting is a key technique to produce hydrogen fuels, which can be considered as an efficient strategy to store renewable energy. Oxygen evolution reaction (OER) happened at anode side requires a four-electron transfer under highly oxidizing conditions.OER has a large overpotential and therefore determine the overall effici...
A facile vacuum filtration method is applied for the first time to construct sandwich-structure anode. Two layers of graphene stacks sandwich a composite of black phosphorus (BP), which not only protect BP from quickly degenerating but also serve as current collector instead of copper foil. The BP composite, reduced graphene oxide coated on BP via...
The development of lithium-sulfur is impeded by two main obstacles: the dissolution of lithium polysulfides and the pristine insulation of sulfur. Here, high energy ball-milling with the assistance of dielectric barrier discharge plasma was used in synthesis of ultrafine sulfur particles anchored on in situ exfoliated graphene for Li-S batteries. T...
In this work, for the first time, we report the synthesis of N, P co-doped carbon derived from electrochemically polymerized supermolecules. The as-obtained N, P co-doped carbon fiber networks show ultra-efficient HER activity as a metal-free electrocatalyst with an overpotential of 151 mV to reach a current density of 10 mA cm⁻².
We successfully obtained a novel bi-functional electrocatalyst towards the ORR and OER: Co nanoparticle-embedded N-doped carbon nanotube (CNT)/porous carbon (PC) by pyrolyzing metal organic framework (MOF) encapsulated Co3O4. The as-obtained hybrid exhibited highly efficient electrocatalytic activity for the ORR and OER. Furthermore, the assembled...
High-temperature pyrolyzed Fe/N/C catalyst is one of the most promising nonprecious metal electrocatalysts for oxygen reduction reaction (ORR). Metal-free carbon materials doped with heteroatoms have also shown prominent electrocatalytic performance for ORR. Here, for the first time, we realized an in-situ S-doping in Fe/N/C (denoted as S-Fe/N/C) e...
In this work, we report the synthesis of mesoporous carbon derived from nonporous MOFs without any heteroatom doping or residual metal, which is highly efficient for the electrocatalytic oxygen reduction reaction. The excellent ORR activity is attributed to both high specific surface area and mesoporous structure.
Ultralong (~25-30 μm) surface-Pt-rich Au93Pt7 alloy nanowires (ANWs) were achieved by a directional coalescence between spherical nanoparticles. Also, the ANWs exhibit superior electrocatalytic activity and long-term durability towards ethanol oxidation, ~12 times in the mass activity better than state-of-the-art commercial Pt/C catalyst.
Highly efficient electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) have been regarded as the core in a wide range of the renewable energy technologies. Surface engineering on the electrocatalysts is one of the most popular strategies to improve the catalytic activity. Herein, we, for the first time, designed a...
For the first time, we developed edge-rich and dopant-free graphene as a highly efficient ORR electrocatalyst. Electrochemical analysis revealed that the as-obtained edge-rich graphene showed excellent ORR activity through a one-step and four-electron pathway. With a similar strategy, edge-rich carbon nanotubes and graphite can also be obtained wit...
As a green and highly efficient energy resource, hydrogen (H2) has attracted much attention in recent years. Electrochemical water splitting is an economic process to generate H2. MoS2 is a promising candidate to replace traditional Pt-based electrocatalysts for the hydrogen evolution reaction (HER) under acidic conditions. But low electrical condu...
Exploring high efficient and durable electrocatalysts at low cost for the oxygen reduction reaction (ORR) in fuel cells or metal-air battery to replace precious-metal ones such as platinum (and its alloy) has triggered extensive research interests. Recently, continuous efforts have been made to fabricate doped graphene as ORR electrocatalysts and N...
Herein, for the first time, we reported a general approach of plasma engineering to tune the surface properties and edge reactive sites for greatly improving HER (hydrogen evolution) activity of MoS2. We show that the Ar or O2 plasma can be used to generate a large number of physical and chemical defects in 2D crystals to modify the electronic prop...
A novel method of molecular covalently functionalized multiwalled carbon nanotube using nitrobenzene group is prepared and used as a promising support material of Pt-based electrocatalysts (denoted as Pt-NB-MWCNT) for methanol oxidation reaction. The physical and chemical characteristics are performed by X-ray powder diffraction, transmission elect...
Nitrogen doping could effectively enhance the catalytical activity of graphene-supported Pt nano-electrocatalysts for methanol oxidation reaction. Previously, the main strategy to the synthesis of Pt/N-graphene is the two-step reaction while it involves the complicated synthesis. In this work, we describe a facile and simple one-pot reaction includ...
Heteroatom-doped carbon materials have been extensively investigated as metal-free electrocatalysts to replace commercial Pt/C catalysts in oxygen reduction reactions in fuel cells and Li-air batteries. However, the synthesis of such materials usually involves high temperature or complicated equipment. Graphene-based sulfur composites have been rec...
Nitrogen and sulfur co-doped graphene supported MoS2 (MoS2/NS-G) nanosheets were prepared through a one-pot thermal annealing method. The as prepared samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Raman spectra and electrochemical techniques. The MoS2...
Heteroatom-doped carbon materials have been extensively investigated as metal-free electrocatalysts to replace commercial Pt/C catalysts in oxygen reduction reactions in fuel cells and Li–air batteries. However, the synthesis of such materials usually involves high temperature or complicated equipment. Graphene-based sulfur composites have been rec...
In this work, we successfully, for the first time, perform the molecular doping of graphene as metal-free electrocatalysts for oxygen reduction reaction. The doped small molecule onto graphene could induce the charge transfer between graphene and the molecules, which leads to significantly enhanced electrocatalytic activity for oxygen reduction rea...
Novel N, S co-doped graphene (NSG) was prepared by annealing graphene oxide with thiourea as the single N and S precursor. The NSG electrodes, as efficient metal-free electrocatalysts, show a direct four-electron reaction pathway, high onset potential, high current density and high stability for the oxygen reduction reaction.