期刊
CHEMICAL COMMUNICATIONS
卷 57, 期 51, 页码 6253-6256出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cc00584g
关键词
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资金
- National Natural Science Foundation of China [51974070, 21673035, 51804066]
- LiaoNing Revitalization Talents Program [XLYC1907069]
- LiaoNing Science and Technology Development Foundation Guided by Central Government [2021JH6/10500139]
- Fundamental Research Funds for the Central Universities [N2105001]
- 111 Project [B16009]
The energy storage behavior of the Li3V2(PO4)(3) cathode in zinc batteries was evaluated, showing that the use of a combination of water and acetonitrile solvents in the electrolyte can effectively prevent dissolution or decomposition while maintaining high voltage. The cathode delivered a capacity of 128 mA h g(-1) at 1C and retained 87 mA h g(-1) at 10C, with stable cycling for 1000 cycles.
The energy storage behavior of the Li3V2(PO4)(3) cathode in zinc batteries is evaluated. The dissolution or decomposition into vanadium oxide in aqueous electrolytes is revealed. Using the optimal combination of water and acetonitrile solvents in electrolyte, those processes are effectively prevented without sacrificing the Zn2+ de/insertion kinetics. Further investigation demonstrates a water induced phase transformation into a VOPO4 type structure, which is still a polyanion material and preserves the high voltage. It delivers 128 mA h g(-1) capacity at 1C with 1.45 V discharge voltage, and 87 mA h g(-1) capacity is retained at 10C. A stable cycling is obtained for 1000 cycles.
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