Cation-Deficient Spinel ZnMn2O4 Cathode in Zn(CF3SO3)2 Electrolyte for Rechargeable Aqueous Zn-Ion Battery

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題名:	Cation-Deficient Spinel ZnMn2O4 Cathode in Zn(CF3SO3)2 Electrolyte for Rechargeable Aqueous Zn-Ion Battery
作者:	鄭芳怡;Zhang, Ning;Cheng, Fangyi;Liu, Yongchang;Zhao, Qing;Lei, Kaixiang;Chen, Chengcheng;Liu, Xiaosong;Chen, Jun
貢獻者:	地球科學學院大氣科學學系
關鍵詞:	batteries;cathodes;cations;electrochemistry;Fourier transform infrared spectroscopy;manganese;nuclear magnetic resonance spectroscopy;particle size;renewable energy sources;storage technology;X-ray absorption spectroscopy;X-ray diffraction;zinc
日期:	2016-10-05
上傳時間:	2026-04-21 14:16:02 (UTC+8)
出版者:	American Chemical Society
摘要:	摘要： Rechargeable aqueous Zn-ion batteries are attractive cheap, safe and green energy storage technologies but are bottlenecked by limitation in high-capacity cathode and compatible electrolyte to achieve satisfactory cyclability. Here we report the application of nonstoichiometric ZnMn2O4/carbon composite as a new Zn-insertion cathode material in aqueous Zn(CF3SO3)2 electrolyte. In 3 M Zn(CF3SO3)2 solution that enables ∼100% Zn plating/stripping efficiency with long-term stability and suppresses Mn dissolution, the spinel/carbon hybrid exhibits a reversible capacity of 150 mAh g–1 and a capacity retention of 94% over 500 cycles at a high rate of 500 mA g–1. The remarkable electrode performance results from the facile charge transfer and Zn insertion in the structurally robust spinel featuring small particle size and abundant cation vacancies, as evidenced by combined electrochemical measurements, XRD, Raman, synchrotron X-ray absorption spectroscopy, FTIR, and NMR analysis. The results would enlighten and promote the use of cation-defective spinel compounds and trifluoromethanesulfonic electrolyte to develop high-performance rechargeable zinc batteries. 其他題名： J. Am. Chem. Soc 出版者： American Chemical Society 出版日期： 2016-10-05 出處： Journal of the American Chemical Society, 2016-10, Vol.138 (39), p.12894-12901 資源來源： American Chemical Society Publications 版權： Copyright © 2016 American Chemical Society 識別號： ISSN: 0002-7863 識別號： ISSN: 1520-5126 識別號： EISSN: 1520-5126 識別號： DOI: 10.1021/jacs.6b05958
顯示於類別:	[大氣科學學系] 期刊論文

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