期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 11, 期 7, 页码 1512-1514出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2009.05.043
关键词
Lithium intercalation; LiMn2O4; V2O5 xerogel; Galvanostatic charging
资金
- Ministry of Science and Technological Development of Republic Serbia [142047]
By dissolving crystalline V2O5 in hydrogen peroxide and drying at elevated temperature, the V2O5 xerogel was obtained. Its electrochemical behaviour was examined in aqueous solution of LiNO3 by both cyclic voltammetry and galvanostatic charging/discharging cycling. Peak-to-peak potential separation observed at the cyclovoltammograms indicated fast Li+ intercalation/deintercalation reactions. Initial discharge capacity amounted to 69 mAhg(-1), and after 100 charging/discharging cycles, capacity fade amounted to 11% only. This presents a remarkable improvement in comparison with the behaviour of crystalline, vanadium oxide based, lithium intercalates in aqueous electrolytes. (c) 2009 Elsevier B.V. All rights reserved.
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