JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2023
·Vol. 170
·期 11
·110524
·
IF 3.9
Mengmei Liu,Zhihua Li,Yibo Zhang
Layered vanadium oxides have been considered as highly promising cathode materials for aqueous zinc-ion batteries (ZIBs) due to their unique open crystal structure and high theoretical specific capacity. However, the structural instability and sluggish Zn2+ diffusion kinetics limit their further application in ZIBs. Here, a novel and stable cathode (porous Na-V2O5) for aqueous ZIBs is rationally constructed by using a straightforward MOF-assisted synthetic method. The Na-V2O5 exhibits remarkable capacity of 306 mAh g−1 at 0.1 A g−1, exceptional rate characteristics (264.3 mAh g−1 at 2.0 A g−1), and great cycling capabilities over 1000 cycles with a capacity-retention of 83.4% when examined as a cathode for ZIBs. Higher pseudo-capacitance, quicker charge-transfer/ion-diffusion kinetics, and a robust architecture have been attained in the Na-V2O5 cathode, which are in charge of the superior zinc-ion storage performance. This has been made possible by the pre-intercalated Na+ cations and the resulting layer structure. Additionally, the Zn2+ and H+ co-intercalation/extraction-based energy storage method has been validated. This research may help rationally design layer-structured V2O5 cathodes for high energy and power density aqueous energy storage systems.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Junde Zhang,Yanmei Cheng,Chunhui Du,Guangming Nie
Electrochromic supercapacitors (EC-SC), which integrate energy storage and intelligent light modulation, show broad application prospects despite being constrained by limitations such as single-color variation, sluggish color transition kinetics, and inadequate electrical conductivity. To break through this bottleneck, we simultaneously introduce Co single-atoms and oxygen vacancies (Ov) into the V 2 O 5 substrate and further modify it with poly(5-formylindole) (P5FIn), thereby greatly improving the conducting and electrochromic performance of the material. The modified P5FIn/Co-V 2 O 5-x electrochromic film has a capacitance of 291.6 mF cm −2 at a current density of 1 mA cm −2 and an optical modulation effect of 54.5 % at 800 nm, while its capacitance remains at 95 % during 10,000 charge and discharge tests. The finely tuned EC-SC has high specific capacitance (241.1 mF cm −2 ), practical power density and capacity density (1.7 W cm −2 and 133.94 mWh cm −2 ), significant optical contrast (ΔT 980 nm = 71 %), high coloration efficiency (156.4 cm 2 C −1 ), fast switching (4.2 s/4.2 s for color rendering/bleaching), and long operational stability (>3000 cycles). In this study, a synergistic structure that combines Ov, single-atoms, and conductive polymers is constructed, which leads to significant enhancements in optical response, capacitive performance, and cycling stability, and this work presents a scalable strategy for designing high-performance EC-SC devices.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能量存储
·
智能材料
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·Vol. 45
·期 8
·10028-10034
·
IF 3.45
Dengwei Hu,Fan Zhao,Lei Miao,Zhen Zhang,Yan Wang,Hualei Cheng,Yinfeng Han,Meijuan Tian,Hongxi Gu,Rong Ma
The present work investigated the effect of the addition of V 2 O 5 and MnCO 3 on the microstructure and magnetic properties of Ni-Zn ferrite ceramic samples prepared by a conventional ceramic sintering method at different temperatures. With this aim, a series of samples were prepared by varying the loadings of V 2 O 5 -MnCO 3 (un-doped, 0.4–0.1 wt%, 0.1–0.4 wt%, 0.2–0.3 wt%, 0.3–0.2 wt%, and 0.5–0.1 wt%, denoted as sample 1, sample 2, sample 3, sample 4, sample 5, and sample 6, respectively). The initial permeability and power loss of the different Ni-Zn ferrites were investigated with respect to the sintering temperature . The V 2 O 5 and MnCO 3 dopants significantly improved the initial permeability and power loss characteristics of the Ni-Zn ferrite at frequencies ≥0.5 MHz. When sintered at 1100 °C, sample 2 showed a maximum initial permeability of 931.23 H/m at a frequency of 1 MHz combined with a minimum power loss of 339.2 kW/m 3 . Co-doping with V 2 O 5 and MnCO 3 also resulted in the sintered samples with larger average grain sizes and higher density, while the sintering temperature of Ni-Zn ferrites was significantly reduced.
✓ 已验证
DOI
高影响因子
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
·
2020
·Vol. 37
·期 8
·2000164
·
IF 3.099
Liwei Su,Linhui Liu,Jinpei Hei,Huan Chen,Lianbang Wang,Yuanhao Wang,Manman Ren
V 2 O 5 , as a lithium-free cathode material, has inherent defects such as sluggish kinetics and volume change and, at the same time, requires a lithium metal anode that tends to form dendrites in liquid electrolytes. Both the lithium dendrite and the flammable electrolyte solvent bring longtime safety issues. This work introduces nonflammable inorganic–organic composite solid electrolyte to inhibit the growth of the lithium dendrite and suppress the instability caused by V 2 O 5 nanometerization. However, the long-term cycling and rate performances are still insufficient even when reducing V 2 O 5 size to about 50 nm. As an improvement, sub-10 nm V 2 O 5 /C nanosheets are designed and prepared using corn stalks as precursors through simple impregnation and calcination process. The V 2 O 5 /C offers a much better electrode/electrolyte contact and interface stability than bulk V 2 O 5 and commercial V 2 O 5 in the inorganic–organic composite solid electrolyte. The discharge capacity is 228 mAh g −1 at 0.1 C after 50 cycles and ≈110 mAh g −1 at 2.0 C.
研究领域:
材料科学
·
电化学
·
纳米能源
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固态电池
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电极材料设计
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Hongwei Yang,Meijun Guo,Fang Xu,Yulong Liao,Yong Ren,Guixiang Liu,Honglan Lai,Bochengwen Sun,Bo Dai
In this study, nanoparticles of LiZn ferrite (nano-LiZn, 0.0–10.0 wt. %) fabricated via the sol-gel method and V 2 O 5 particles were added into a Li 0.43 Zn 0.27 Ti 0.13 Fe 2.17 O 4 (LiZnTi) ferrite to realize low temperature sintering . The effects of the nano-LiZn ferrite addition on the crystalline phase formation, microstructure, and magnetic properties of LiZnTi ferrite were systematically investigated. X-ray diffraction results reveal that the LiZnTi ferrite doped with nano-LiZn and V 2 O 5 additives present a pure spinel structure, which can be explained by liquid phase of V 2 O 5 and spinel structure of nano-LiZn, as revealed by high-resolution transmission electron microscopy and selected area electron diffraction data. Scanning electron microscopy images show that the addition of nano-LiZn leads to a change in the microstructure, with the grains becoming uniform and dense. Additionally, the variation in the saturation magnetization ( M s ) depends on the LiZn content. In particular, M s increases with increasing LiZn content from 2.0 to 10.0 wt. %. Finally, the LiZnTi ferrite doped 4.0 wt. % nano-LiZn and 0.60 wt. % V 2 O 5 possesses a narrow ferromagnetic resonance linewidth of 197 Oe, a reduced coercivity of 192.6 A/m, and an improved bulk density of 4.73 g/cm 3 .
研究领域:
材料科学
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磁性材料
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陶瓷
·
电磁学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 5
·3825-3834
·
IF 2.22
Zhang Yanjiao,Zou Zhengguang,Le Shangwang,Li Shengyu,Liu Jie
The layered vanadium pentoxide (V 2 O 5 ) application has a good development potential in lithium-ion battery cathode materials. In this paper, vanadium chloride (VCl 3 ), terephthalic acid, and ethanol were served as crude materials to produce precursors of vanadium-based metal organic frameworks by simple solvothermal method. Porous vanadium oxides were synthesized by heat treatment at different temperatures. The results show that the vanadium pentoxide cathode material has a better electrochemical charge and discharge performance and steady cycle by heat treatment of the precursor at 600 °C. The specific capacity of first discharge of the vanadium pentoxide cathode material obtained by heat treatment at 600 °C reached to 324 mAh/g, and when the current density is 50 mA/g, the capacity retention ratio is still 50.6% after 100 cycles. The capacity retention ratio was increased by 16.6% compared to the heat treatment temperature at 400 °C.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Energy Technology
·
2022
·Vol. 10
·期 5
·2101170
·
IF 4.149
Yingchao Wang,Guangshen Jiang,Zhuo Zhang,Hanchu Chen,Yutong Li,Debin Kong,Xin Qin,Yanyan Li,Xinghao Zhang,Hui Wang
Rechargeable Zn-ion batteries (ZIBs) are regarded as one of the most promising energy storage systems due to their non-toxicity, low cost, and non-flammability features. However, exploring flexible and high-capacity devices with prominent cycling still remains a challenge for ZIBs. Herein, a flexible and binder-free carbon cloth coated by V 2 O 5 (namely, CC@V 2 O 5 ) cathode material is prepared through a simple solvothermal method. The cable-like CC@V 2 O 5 provides abundant active sites and highways for electrons transport. Meanwhile, the layered structure of V 2 O 5 can also facilitate zinc ion diffusion. The galvanostatic intermittent titration technique indicates that the zinc-ion diffusion coefficient of CC@V 2 O 5 is much higher than that of the commercial V 2 O 5 . As a result, the CC@V 2 O 5 exhibits excellent electrochemical performance and outstanding bendability arising from the synergistic effect between porous V 2 O 5 and carbon cloth, in terms of a remarkable discharge capacity (296 mAh g −1 at 3 A g −1 ), superior rate capability (241 mAh g −1 at 5 A g −1 ), and long-term stability with a capacity retention of 87.1% over 2200 cycles. The novel strategy proposed in this study may provide guidance for exploiting high-performance flexible systems and wearable energy storage systems.
研究领域:
储能
·
材料科学
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电化学
·
柔性电子学
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 10
·1776
·
IF 5.719
Wentao Xu,Guoqiang Shu,Shihui Zhang,Lei Song,Kui Ma,Hairong Yue
Titanium dioxide is a mainstream photocatalyst, but it still confronts great obstacles of poor visible light absorption and rapid recombination rate of photogenerated carriers. Herein, we describe the design of a highly active visible-light photocatalytic system of graphited carbon layers anchored V2O5/TiO2heterojunctions derived from Ti3C2MXene, which demonstrates about 4.58 and 2.79 times higher degradation activity of MB under visible light (λ > 420 nm) than pure V2O5and TiO2-carbon. Combined with the characterization results, the formed V2O5/TiO2heterojunction promotes the separation of photogenerated carriers, while the graphitized carbon derived from MXene acts as an electronic reservoir to enhance the absorption of visible light. The ESR results show that superoxide radicals and hydroxyl radicals are the main active species in the reaction system. Therefore, we propose a possible mechanism model to provide a feasible idea for the subsequent design of high-efficiency photocatalysts for environmental treatment.Keywords:MXene;heterojunction;degradation;visible light;photocatalysis
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLVENT EXTRACTION AND ION EXCHANGE
·
2014
·
IF 1.66
Ju-hua Zhang,Wei Zhang,Li Zhang,Song-qing Gu
In the V2O5 production process, purification of vanadium-bearing solution plays an important role in determining the quality of the final product. The choice of purification method depends on the vanadium species, aqueous media, and associated impurities. In this review, the recent research results for the separation and recovery of vanadium from leaching solution with solvent extraction, ion exchange, and chemical precipitation separation are presented. The effects of the main operational parameters on the efficiency of purification with these three methods are compared and discussed respectively, and several problems existing in these processes are proposed.
研究领域:
冶金工程
·
材料科学
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 15
·2530
·
IF 5.719
Xiaoping Tan,Gaoli Guo,Kaidi Wang,Huang Zhang
Aqueous zinc-ion batteries offer the greatest promise as an alternative technology for low-cost and high-safety energy storage. However, the development of high-performance cathode materials and their compatibility with aqueous electrolytes are major obstacles to their practical applications. Herein, we report the synthesis of orthorhombic V2O5·nH2O nanorods as cathodes for aqueous zinc batteries. As a result, the electrode delivers a reversible capacity as high as 320 mAh g−1at 1.0 A g−1and long-term cycling stability in a wide window of 0.2 to 1.8 V using a mild ZnSO4aqueous electrolyte. The superior performance can be attributed to the improved stability of materials, inhibited electrolyte decomposition and facilitated charge transfer kinetics of such materials for aqueous zinc storage. Furthermore, a full cell using microsized Zn powder as an anode within capacity-balancing design exhibits high capacity and stable cycling performance, proving the feasibility of these materials for practical application.Keywords:zinc batteries;V2O5·nH2O nanorods;cathode materials;Zn anode;aqueous batteries
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Fan Zhao,Siqi Gong,Huiting Xu,Meng Li,Lina Li,Junjie Qi,Honghai Wang,Chunli Li,Wenchao Peng,Jiapeng Liu
As candidates of the next generation batteries, aqueous zinc-ion batteries (ZIBs) have drawn widespread attention owing to the advantages of environmental friendliness, low cost and ultrahigh theoretical capacity. In order to obtain superior zinc ions (Zn 2+ ) storage ability, the cathode materials with eminent electrochemical property are placed great expectations. Herein, the hierarchical 3D a-V 2 O 5 @Ti 3 C 2 T x microsphere is prepared by a simple spray drying process. In the heterostructure, the amorphous V 2 O 5 not only endows abundant active sites for Zn 2+ storage but also effectively alleviates Ti 3 C 2 T x MXene nanosheets restacking. Meanwhile, the presence of conductive Ti 3 C 2 T x MXene framework significantly enhances the conductivity and reaction kinetics of the electrode material. As a result, the 3D a-V 2 O 5 @Ti 3 C 2 T x exhibits an impressive Zn 2+ storage ability, including the high reversible capacity (604 mAh g −1 at 0.5 A g −1 ), the superior rate performance and the splendid cycling stability. Furthermore, the relevant mechanism is illustrated via various characterizations. Moreover, the as-fabricated pouch ZIBs based on the 3D a-V 2 O 5 @Ti 3 C 2 T x displays a potential practical application prospect as flexible energy storage devices. Hence, this work may provide an inspiration for the rational design of high performance ZIBs cathode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Yaohao Zhang,Kaifen Luo,Lijuan Peng,Jiahuan Zhong,Chengkai Zhang,Dingsheng Yuan
Compared to a single heterostructure , constructing multiple heterojunction interfaces to enhance bifunctional catalytic activity still faces challenges. Herein, a nanoflower-like electrocatalyst with multiple heterojunction interfaces, which consists of MoO 3 , V 2 O 5 , and Ni(OH) 2 in-situ grown on nickel foam, is prepared through a one-step hydrothermal method (MoO 3 /V 2 O 5 /Ni(OH) 2 /NF, named MVN/NF). The MVN/NF exhibits superior catalytic performance, attributable to enhanced electron transfer facilitated by numerous heterojunction interfaces, a substantial active specific surface area , and a self-supported architecture. It requires low potentials for hydrogen evolution reaction , urea oxidation reaction , and overall urea electrolysis of 81 mV, 1.351 V, and 1.450 V (vs. RHE), respectively, to reach a current density of 10 mA cm −2 . By cutting the material into a large-scale electrode for use in an alkaline electrolyzer , its Faraday efficiency was 90.0%, and the urea decomposition rate reached 45.1%. This work offers broad application prospects for the realization of large-scale hydrogen production and the decomposition of urea-containing wastewater.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）