Figure - available from: Advanced Functional Materials
This content is subject to copyright. Terms and conditions apply.
Kinetic analyses of the DMcT‐MoO3 electrode. a) CV curves at various scan rates from 0.2 to 1.0 mV s⁻¹. b) Determination of the b value using the relationship between peak current and scan rate. c) Separation of the capacitive (shaded region) and diffusion currents at a scan rate of 1 mV s⁻¹. d) Contribution ratio of the capacitive and diffusion‐controlled charge versus scan rate. e) The comparison of capacitive contribution. f) GITT plots are collected at a current density of 0.1 A g⁻¹. g,h) The comparison of reaction resistance during the charging and discharging process. i) The comparison of EIS spectra, the inset shows the relationship between the real part of impedance and low frequencies.
Source publication
Orthorhombic molybdenum trioxide (MoO3) is one of the most promising anode materials for sodium‐ion batteries because of its rich chemistry associated with multiple valence states and intriguing layered structure. However, MoO3 still suffers from the low rate capability and poor cycle induced by pulverization during de/sodiation. An ingenious two‐s...
Similar publications
Sodium is abundant on earth and has similar chemical properties to lithium, thus sodium‐ion batteries (SIBs) have been considered as one of the most promising alternative energy storage systems to lithium‐ion batteries (LIBs). Meanwhile, a new energy storage device called sodium dual‐ion batteries (SDIBs) is attracting much attention due to its hig...
Engineering the structure and chemistry of solid electrolyte interface (SEI) on electrode materials is crucial for rechargeable batteries. Using hard carbon (HC) as a platform material, a correlation between Na⁺ storage performance, and the properties of SEI is comprehensively explored. It is found that a “good” SEI layer on HC may not be directly...
The heteroatom doping of carbon materials can significantly improve the electrochemical performance of sodium-ion batteries. However, conventional doping techniques involve more than two steps, making them unsuitable for scale-up. In this study, an S and P co-doped carbon material is synthesized using a simple, one-step plasma-in-liquid process. Th...
- [...]
As potential cathodes for sodium ion batteries, layered NaxTMO2 (0.44 ≤ x ≤ 1, TM = transition metal) materials show high specific capacities but poor cycling and rate performance. In layered NaxTMO2, the distribution of TM at crystal sites determines the electrostatic interaction between TM and the coordinated atoms and affects the electrochemical...
![Crystal structure of the orthorhombic V2O5 viewed along the a) [100],...](publication/372656501/figure/fig2/AS:11431281209453705@1701793746167/Crystal-structure-of-the-orthorhombic-V2O5-viewed-along-the-a-100-b-010-c-110_Q320.jpg)
![a) Crystal structure of V2O3. Reproduced with permission.[⁴⁵] Copyright...](publication/372656501/figure/fig5/AS:11431281209481771@1701793746669/a-Crystal-structure-of-V2O3-Reproduced-with-permission-Copyright-2018-Springer_Q320.jpg)
Sodium‐ion batteries (SIBs) represent one of the current research frontiers owing to their low cost, intrinsic safety, environmental friendliness, and other unique features. In the current era, a myriad of investigations are conducted towards the exploration of advanced electrode materials with exceptional energy/power density, superior rate capabi...
Citations
... To realize AMIBs making rapid progress in terms of fast-charging, researchers have been trying to seek for anode materials with high specific capacity, moderate reaction voltages, and fast reaction kinetics. 5,[29][30][31][32][33] As shown in Figure 1, typical anodes can be classified into four categories, which are the intercalation typed (e.g., graphite, hard carbon, graphene, titanate, etc.), [34][35][36][37] alloying typed (e.g., Si, Sn, Sb, Bi, P, etc.), [38][39][40][41][42] conversion typed (e.g., CoP, Co 3 O 4 , NiO, MoP, etc.), 39,43 and conversionalloying typed anodes (e.g., Sn 4 P 3 , SnO 2 , SnS 2 , GeP, etc.). 12,44-46 Among them, as mentioned above, graphite anodes have weaknesses of low capacity, insufficient safety, and poor fast-charging performance. ...
... To realize AMIBs making rapid progress in terms of fast-charging, researchers have been trying to seek for anode materials with high specific capacity, moderate reaction voltages, and fast reaction kinetics. 5,[29][30][31][32][33] As shown in Figure 1, typical anodes can be classified into four categories, which are the intercalation typed (e.g., graphite, hard carbon, graphene, titanate, etc.), [34][35][36][37] alloying typed (e.g., Si, Sn, Sb, Bi, P, etc.), [38][39][40][41][42] conversion typed (e.g., CoP, Co 3 O 4 , NiO, MoP, etc.), 39,43 and conversionalloying typed anodes (e.g., Sn 4 P 3 , SnO 2 , SnS 2 , GeP, etc.). 12,44-46 Among them, as mentioned above, graphite anodes have weaknesses of low capacity, insufficient safety, and poor fast-charging performance. ...
Advancing fast‐charging technology is an important strategy for the development of alkali metal ion batteries (AMIBs). The exploitation of a new generation of anode material system with high‐rate performance, high capacity, and low risk of lithium/sodium/potassium plating is critical to realize fast‐charging capability of AMIBs while maintaining high energy density and safety. Among them, phosphorus‐based anodes including phosphorus anodes and metal phosphide anodes have attracted wide attention, due to their high theoretical capacities, safe reaction voltages, and natural abundance. In this review, we summarize the research progress of different phosphorus‐based anodes for fast‐charging AMIBs, including material properties, mechanisms for storing alkali metal ions, key challenges and solution strategies for achieving fast‐charging capability. Moreover, the future development directions of phosphorus‐based anodes in fast‐charging AMIBs are highlighted.
image
... Wang et al. proposed an effective interlayer engineering strategy based on the integration of partial reduction and organic molecular intercalation ( Fig. 8d and e). They intercalated bismuththiol (DMcT) molecules into the MoO 3 interlayer, where the DMcT molecules acted as anchors to strengthen the extended layer structure [167]. The interlayer spacing of MoO 3 noticeably increased from 6.92 to 10.40 Å and the structural integration was strengthened by dimercapto groups of DMcT molecules. ...
... (3) Significant improvement in conductivity. For 2D layered materials like alpha-MoO 3 , MoS 2 , and MoSe 2 , extended interlayer spacing can enhance the kinetics of alkali ions and electron through smaller diffusion barriers achieved by doping heteroatoms or introducing vacancies [167,205,251]. Designing the crystal structure by constructing a heterogeneous interface has also shown promise in enhancing charge transfer and accelerating ion diffusion. ...
... Generally, it can be concluded that the ion migration of HMoOF electrode along the b-axis is more likely than pure MoO 3 electrode, because of its lower energy barrier. 38 The abundant molybdenum vacancies effectively activate inert basal plane and reduce the space resistance for Mg 2+ diffusion along the b-axis. Nyquist plots and fitted results of the cathodes were further used to ...
Molybdenum trioxide has served as a promising cathode material of rechargeable magnesium batteries (RMBs), because of its rich valence states and high theoretical capacity; yet, it still suffers from sluggish (de)intercalation kinetics and inreversible structure change for highly polarized Mg2+ in the interlayer and intralayer of structure. Herein, F- substitutional and H+ interstitial doping is proposed for α-MoO3 materials (denoted HMoOF) by the intralayer/interlayer engineering strategy to boost the performance of RMBs. F- substitutional doping generates molybdenum vacancies along the Mo-O-□ or Mo-F-□ configurations (where □ represents the cationic vacancy) for unlocking the inactive basal plane of the layered crystal structure, and it further accelerates Mg2+ diffusion along the b-axis. Interstitial-doped H+ can expand interlayer spacing for reducing Mg2+ energy barrier along the ac plane and serve as a "pillar" to stabilize the interlayer structure. Moreover, anion and cation dual doping trigger shallow impurity levels (acceptors levels and donor levels), which helps to easily acquire the electrons from the valence band and donate the electrons to the conduction band. Consequently, the HMoOF electrode exhibits a high reversible capacity (241 mA h g-1 at 0.1 A g-1), an excellent rate capability (137.4 mAh g-1 at 2 A g-1), and a long cycling stability (capacity retention of 98% after 800 cycles at 1 A g-1) in RMBs. This work affords meaningful insights in layered materials for developing high-kinetics and long-life RMBs.
... num trioxide (MoO 3 ) is a thermodynamically stable N-type semiconductor material with multiple valence states, which has been used as a high-activity catalyst and also served as an excellent support material in battery, supercapacitor, and electrochemical sensor (Boopathy, Keerthi, Chen, Meenakshi, et al., 2021;Ling, Zou, Yang, Chen, et al., 2018;B. Wang, Ang, Yang, Zhang, et al., 2020). Because of the wide energy band and poor electrical conductivity, it has usually been doped with active elements or combined with conductive materials to form composites with better electrochemical properties (Zhang, Xu, Li, & Zhang, 2018). ...
Chrysanthemum tea is a tranditional Chinese health drink, which contains luteolin, a flavonoid with vesatile health benefit activities. Herein, A sensitive electrochemical sensor based on composite materials consisting of MoO3 nanorods , poly (3, 4-ethylene dioxyethiophene)(PEDOT), and γ-cyclodextrin metal-organic framework(CD-MOF) was prepared.The materials were characterized and analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD), fourier transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS). Due to the synergistic effects of the materials, the sensor showed a wide linear range of 0.4 nM -1800 nM and a low detection limit (LOD) of 0.1 nM (S/N = 3) for luteolin under optimized conditions. Besides, the influences of some coexistent phenolic compounds and common metal ions on luteolin detection were evaluated and no significant interference was observed. Finally, the sensor was successfully applied to the detection of luteolin in real Chrysanthemum tea samples.
... Among the solid catalysts studied, molybdenum trioxide and materials based on the transition metal Mo, have been the focus of several technological applications, mainly due to their structural characteristics, as photocatalysts, 9,13 gas sensors, 14 battery applications, 5,15,16 and for biodiesel production. 10,12,17,18 Also, their selectivity and high catalytic activity are primarily related to Lewis and Brønsted-Lowry acidity. ...
The MoO3 was synthesized on a pilot scale by combustion reaction and their catalytic performance was investigated to obtain biodiesel from residual oil by simultaneous reactions of transesterification and esterification (TES). The catalyst was characterized by X-ray diffraction with respective Rietveld refinement, Fourier transform infrared, and RAMAN spectroscopies, scanning electron microscopy, determination of the specific surface area by the method of N2 adsorption (Brunauer, Emmett, and Teller), and acidity test by temperature-programmed desorption of ammonia molecule. The catalytic properties were evaluated through catalytic tests while the products of the TES reactions were characterized by gas chromatography, kinematic viscosity, and acidity index. Such results indicated that single-phase catalysts (α-MoO3-100%) and biphasic (h/α-MoO3-hexagonal 56.80% and orthorhombic 43.20%) were synthesized, which presented crystalline fraction and crystal size of 88% to 90% and 33 to 84 nm, respectively. The crystalline phases (α-MoO3 and h/α-MoO3) showed typical morphologies of microplate agglomerates, irregular rods, the surface area of 1.5 to 4.7 m2 g−1, and total acidity equivalent to 30 to 84 μmol g−1 NH3. The MoO3 was successfully synthesized by pilot-scale combustion reaction and showed promising results, with high conversions to ethyl esters (between 93% and 99%), maintaining activity (useful life) after five consecutive reuse cycles. Thus, the catalysts studied have the potential to enable positive impacts on the environment and society in general.
... Sun et al. [17], Fjellvåg et al. [18], and their coworkers prepared three phases of α-MoO 3 , β-MoO 3 , γ-MoO 3 and compared their Li-ion storage performance, demonstrating that the α-MoO 3 is the best phase [17][18][19][20]. In addition, some studies have also focused on the preparation of MoO 3 with different morphologies to improve the volume expansion and conductivity of MoO 3 [21][22][23], including fibers [19], rods [24,25], belts [26,27], plates [28], wires [29] and films [30]. However, the rational design, synthesis and investigation of α-MoO 3 with a 2D nanosheet structure and its Li-ion storage performance have rarely been reported. ...
... mAh·g −1 and the Coulombic efficiency is only 35%. This may be due to the fact that Li + inserted into the MoO 3 lattice during the first discharge and transformed into Li x MoO 3 , which caused an irreversible structural change and resulted in the formation of an SEI [23]. After the first circle, the charge-discharge specific capacity and Coulombic efficiency are significantly improved, which can be mainly attributed to the activation of the MoO 3 electrode material. ...
Molybdenum trioxide (MoO3) is regarded as a promising electrode material for lithium (Li)-ion batteries because of its unique layered structure with a high theoretical capacity (~ 1117 mAh·g−1). Till now, numerous researches have focused on tuning MoO3 morphology to improve its electrochemical performance. However, the fabrication of MoO3 with a two-dimensional (2D) nanosheet clusters structure has yet been achieved. Here, we report a facile one-step solvothermal method to prepare MoO3 nanosheets, of which the morphology can be facilely tuned via the dose of hydrogen peroxide. Both the experimental results and theoretical calculation suggest that the resultant 2D nanosheets structure could reduce the diffusion paths, which is beneficial for the intercalation of Li-ion. As a result, the nanosheets assembled Li-ion battery has a reversible specific capacity of 756.1 mAh·g−1 at 0.5 A·g−1, and maintained at 214.7 mAh·g−1 after 600 cycles at a current density of 1 A·g−1 with the Coulombic efficiency as high as 97.17%.
... Furthermore, this facile synthetic approach can be applied to other carbonaceous materials such as graphene, multi-walled carbon nanotubes, and carbon nanofiber to produce nanocomposites with controlled MoO 2 or MoO 3 phase and morphology. Such controlled MoO x /Carbon nanocomposites can be used in numerous applications, including sodium-ion batteries [32][33][34] , catalysts for water splitting [35][36][37] , supercapacitors [38][39][40] , and solar cells [ 41 , 42 ], emphasizing the versatility of our synthetic strategy. ...
Molybdenum oxides (MoO2 and MoO3) are attractive anode materials for Li- and Na- ion batteries. Although there have been extensive studies on them individually, systematic and comparative studies are still lacking. In this work, we demonstrate a facile and straightforward synthesis method to control the phase and oxidation state in the MoOx/CNTs nanocomposites via hydrothermal reaction followed by heat-treatment. By changing the gas atmosphere during the annealing process, well-dispersed MoO2/CNTs and MoO3/CNTs nanocomposites are formed without altering their overall morphology. This strategy enables us to investigate the true structure-property correlation of MoOx/CNTs nanocomposites by comparing the structure and electrochemical properties of MoO2/CNTs and MoO3/CNTs. When tested as anode materials for lithium-ion batteries, both HT-MoO2&3/CNTs electrodes show much-improved cycling stability and rate performance compared to the rod-shaped bulk MoO3 electrode. In situ Mo K-edge x-ray absorption spectroscopy (XAS) has been further employed to compare and elucidate Li⁺ storage mechanisms of both electrodes. When employed to the negative electrode of a high-power lithium-ion capacitor (LIC), the LIC full-cell composed of HT-MoO3/CNTs negative and activated carbon positive electrodes demonstrates impressive energy and power densities (∼ 90 Wh kg⁻¹ with 2000 W kg⁻¹) and excellent cycling stability (96.8 % capacity retention after 300 cycles), revealing the versatility of the MoOx/CNTs electrodes in energy applications.
... The technological applicability of novel materials largely depends on their nanostructural properties [2,[5][6][7]. It is shown that the properties of the material are significantly influenced by the metal atoms, or nanostructures, "inserted" into the basic matrix [8][9][10][11]. ...
Structural, optical and electrical properties of Al+MoO3 and Au+MoO3 thin films prepared by simultaneous magnetron sputtering deposition were investigated. The influence of MoO3 sputtering power on the Al and Au nanoparticle formation and spatial distribution was explored. We demonstrated the formation of spatially arranged Au nanoparticles in the MoO3 matrix, while Al incorporates in the MoO3 matrix without nanoparticle formation. The dependence of the Au nanoparticle size and arrangement on the MoO3 sputtering power was established. The Al-based films show a decrease of overall absorption with an Al content increase, while the Au-based films have the opposite trend. The transport properties of the investigated films also are completely different. The resistivity of the Al-based films increases with the Al content, while it decreases with the Au content increase. The reason is a different transport mechanism that occurs in the films due to their different structural properties. The choice of the incorporated material (Al or Au) and its volume percentage in the MoO3 matrix enables the design of materials with desirable optical and electrical characteristics for a variety of applications.
... In recent years, researchers have realized the shortage of lithium resources and have looked again at SIBs [36,37]. More attention has been paid to the design of SIBs since 2010 [38,39]. It can be seen from figure 1 that the number of papers on SIBs has increased year on year. ...
With the increasing global consumption of secondary batteries, the cost of lithium-ion batteries (LIBs) will gradually become a problem. Compared with LIBs, sodium-ion batteries (SIBs) have natural advantages, such as the higher abundance of sodium in the earth’s crust and lower cost. SIBs have a similar working principle to LIBs, based on sodium/lithium ions moving between the cathode and anode. The cathode plays an important role in the performance of SIBs. Among the cathode materials of SIBs, phosphate-based cathodes have been widely studied for their good electrochemical performance and stability. However, there are still some problems that limit their wide practical application, such as unsatisfactory rate performance, low energy density and poor cycle stability. Nanosizing is one of the common modification strategies used to solve the above problems. It not only improves the chemical kinetics of cathode materials but also regulates their thermodynamic properties. This review discusses the influence of nanosizing on the phosphate cathode material and what shapes can be designed to improve performance, and provides a reference for the development of SIBs in the future.
... Lithium ion batteries (LIBs) are recognized as the most important core energy of hybrid-electric vehicles, plug-in hybrids and electric vehicles during the last two decades owing to their high power/capacity densities and long cycling life [1][2][3]. However, the limited resources and increasing prices of lithium salts will limit the further development and application of LIBs in commercial energy storage systems (ESS) [4][5][6]. ...
Sodium-ion batteries (SIBs) are attracted increasing interest for commercial electrical energy storage systems as an economic alternative of lithium-ion batteries (LIBs) due to the rich abundance, evenly distributed and favorable price of sodium resources. But the sluggish in diffusion and huge volume variations during (de)sodiation are considered to be the intrinsic drawbacks to limit the further development of SIBs. Suitable electrodes are thus desired. Sodium super ionic conductor (NASICON) materials are considered to be the most promising electrodes owing to their open three-dimensional (3D) skeleton structure and high ionic conductivity, yet they suffer from the inferior electrical conductivity. Herein, a composite of carbon-incorporated fine NaTi2(PO4)3 (NTP) nanocrystalline (Nano [email protected] in abbreviation) is developed. It displays an excellent sodium storage performance as the anode for SIBs, delivering high sodium storage capacity of 132 mAh g⁻¹ at 0.2 C (1 C = 133 mAh g⁻¹), remarkable rate capability (80 mAh g⁻¹ at a high rate of 50 C) and along with super-long cycle life (87.5% capacity retention at 50 C over 1000 cycles). Besides, the Nano [email protected] also demonstrates a low-temperature sodium storage performance (e.g., showing high discharge capacities of 72 mAh g⁻¹ (10 C) and 60 mAh g⁻¹ (20 C) at −20 °C).
