Wenqing Ma

Northeast Normal University · Faculty of Education

Comprehensive Summary In the endeavor of searching for highly active and stable electrocatalysts toward overall water splitting, high‐entropy‐alloys have been the intense subjects owing to their advanced physicochemical property. The non‐noble metal free‐standing multiscale porous NiFeCoZn high‐entropy‐alloy is in situ constructed on the surface la...

Li-CO2 batteries are among the most intriguing techniques for balancing the carbon cycle, but are challenged by the annoyed thermodynamic barrier of the Li2CO3 decomposition reaction. Herein, we demonstrate the electrocatalytic performances of two-dimensional (2D) CoAl-layer double hydroxide (LDH) nanosheets can be significantly improved by trans-d...

The sluggish kinetics of both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) generate the large overpotential in water electrolysis and thus high-cost hydrogen production. Here, multidimensional nanoporous interpenetrating-phase FeNiZn alloy and FeNi 3 intermetallic heterostructure is in situ constructed on NiFe foam (FeNiZn/...

Li–CO2 batteries, which integrate CO2 utilization and electrochemical energy storage, offer the prospect of utilizing a greenhouse gas and providing an alternative to the well-established lithium-ion batteries. However, they still suffer from rather limited reversibility, low energy efficiency, and sluggish CO2 redox reaction kinetics. To address t...

Rechargeable aqueous zinc ion battery (ZIB) is reviving as a promising energy storage device with respect to its distinguished safeness, cost-effectiveness, and eco-friendliness. However, its practical application is still challenged...

Fabrication alloy-type anode into nanoporous structure demonstrate great potentials to solve the problems of their volume expansion and electrode pulverization upon cycling. However, the fine regulation of porous structure and quickly achieving a stable interface remains challenge for the alloy anode. Herein, we design and prepare a three-dimension...

The complicated battery reaction mechanism and the limited reversibility of the aqueous zinc ion batteries (ZIBs) significantly hindered their practical application. Herein, we prepared a common VS2 nanosheets, which was further employed as cathode for ZIBs to clarify its Zn²⁺ storage mechanism. The Zn/VS2 battery electrochemical reaction mechanism...

Solid-state polymer electrolytes (SPEs) have great processing flexibility and electrode–electrolyte contact and have been employed as the promising electrolytes for lithium metal batteries. Among them, poly(ethylene oxide) (PEO)-based SPEs have attracted widespread attention because of easy synthesis, low mass density, good mechanical stability, lo...

Interconnected two-dimensional (2D) MnO2 nanosheet network anchored on 3D nanoporous Cu skeleton (named as [email protected]2) was easily prepared by utilizing the redox reaction between KMnO4 and Cu. The as-prepared trans-dimensional [email protected]2 composite, which combined the advantages of high surface area MnO2 nanosheets and 3D integrated...

Rational design of bifunctional oxygen catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) with high efficiency and low-cost are significantly in the development of rechargeable Zn-air batteries (ZABs). Herein, it is designed one-dimensional rod-like Mn3O4/NiCo2S4 nanostructure. The inner Mn3O4 nanorod and the outer co...

Rechargeable metal–SO2 batteries have drawn tremendous attention because it can accelerate SO2 fixation/utilization and offer high energy density. Herein, a rechargeable Na–SO2 battery based on an ether‐based liquid electrolyte with an ethylenediamine (EDA) additive is realized via the reversible formation/decomposition of Na2S2O4. Experimental inv...

The rational design of high-performance tri-functional electrocatalysts plays an important role for the fast development of Zn-air batteries (ZABs) and water splitting and still remains a great challenge up to date. Herein, Co4N nanoparticles encapsulated in nitrogen doped carbon (Co4[email protected]) composite has been conveniently fabricated whi...

We report a surface modification of LiNi0.8Co0.15Al0.05O2 (NCA) materials with a phosphate layer via a room-temperature corrosion approach from H3PO4-ethanol solution. The phosphate layer is of amorphous nature with a thickness of 2∼3 nm, and consequently, NCA maintains its bulk structure during cycling and possesses significantly enhanced rate pro...

Current lithium-ion batteries (LIBs) suffer from poor cycling and rate performance at low temperature (LT), which prohibit their applications in cold climate area and winter. As temperature decreases, the Li⁺ desolvation energy and electrode polarization increase, which lead to Li dendrite formation and battery performance fading. Herein, we report...

Lithium ion batteries (LIBs) process performance fading and safety concerns at low temperature (LT) prohibit their application in cold climates. The alloy-type electrodes demonstrate great potentials in stable and dendrite-free anodes at LT. Herein, we report a temperature-dependent Li-storage performance in Al-based nanoporous alloy anode. The nan...

A hierarchically structured Si/Cu/Ag integrated electrode was fabricated by decomposing Si/CuC 2 O 4 nanocomposites within Cu foam, followed by Ag modifing via a silver-mirror-reaction. The interconnected channels supports Si for cycling-dependent volumetric changes accommodation and Li ⁺ migration, while the Cu/Ag framework endows Si with enhanced...

Flexible Li‐air batteries (LABs) have been considered as promising power sources for wearable electronics due to its higher energy density. However, when operated in ambient air, it suffers tremendous issues including Li anode passivation, poor cycle life as well as leakage of liquid electrolyte. Herein, we present a LAB with a tetraethylene glycol...

Flexible Li‐air batteries (LABs) have been considered as promising power sources for wearable electronics due to its higher energy density. However, when operated in ambient air, it suffers tremendous issues including Li anode passivation, poor cycle life as well as leakage of liquid electrolyte. Herein, we present a LAB with a tetraethylene glycol...

Rechargeable Li–CO2 batteries are gaining increasing popularity for reversible electrochemical energy conversion and storage by utilization of the reactions between CO2 and Li metal. However, a high charging voltage (> 4.0 V) should be applied to drive the electrochemical decomposition of discharged products Li2CO3 and C, which results in higher ch...

The excessive emission of CO2 and the energy crisis are two major issues facing humanity. Thus, the electrochemical reduction of CO2 and its utilization in metal–CO2 batteries have attracted wide attention because the batteries can simultaneously accelerate CO2 fixation/utilization and energy storage/release. Here, rechargeable Al–CO2 batteries are...

The undesirable formation and low-efficient decomposition of Li2CO3 on cathode of Li-air battery, is an insurmountable obstacle for its practical applications. High efficient cathode catalysts toward Li2CO3 decomposition still have not been thoroughly studied. Here, we report a porous MnO prepared by heating precursor using a facile ethanol refluxi...

Polyoxometalates as an electron sponge, which process multielectron redox reactions and as a fast ionic conductor, show great potentials as promising electrode materials for next-generation lithium ion batteries (LIBs). However, there are still some fundamental issues which should be conquered before their applications such as what is the stable st...

FeS2 is considered as a high capacity electrode materials based on a conversion reaction mechanism, and mainly applied in primary batteries and rechargeable thermal Li-FeS2 batteries for decades. However, the widely application of FeS2 in rechargeable battery is still hindered by the low efficiency and poor cycle performance caused by the generatio...

Tin-based materials have been considered as promising anodes for sodium-ion batteries because of their high theoretical capacity and low-cost. However, their significant volume expansion and low conductivity prohibit their practical applications. A novel CuSn alloy composite with three-dimensional nanoporous structure was prepared by the dealloying...

Metal-silicides have demonstrated bright prospects as advanced anodes for lithium-ion batteries (LIBs). However, their roles in volume change accommodations are still unclear to us. Here, we design and fabricate a nanoporous Si/Cu0.83Si0.17/Cu composite, supported with a highly crystalline Cu-silicide/Cu rigid framework, which demonstrates a high r...