化工学报2016，Vol.67Issue(11)：4771-4778,8.DOI:10.11949/j.issn.0438-1157.20160315
电化学沉积制备V2O5薄膜电极的表面结构及储钠性能
Surface morphology and sodium storage performance of V2O5 thin film electrode prepared by CTAB assisted electrodeposition
摘要
Abstract
New V2O5 nanofilm electrodes without binder and conductive agents were fabricated by sintering the V2O5 film precursor at 300℃ on stainless steel substrates, which were coated from CTAB-containing V2O5 sol gel electrolyte by electrodeposition. X-Ray diffraction (XRD) indicated that V2O5in the new V2O5 film was hydrated V2O5•nH2O and the film had lager interlamellar spacing than V2O5 film prepared without CTAB. Field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM) results showed that the new V2O5 film possessed a rough porous surface morphology. X-Ray photoelectron spectroscopy (XPS) results suggested that the new V2O5 film electrode contained more V4+than the V2O5film electrode prepared without CTAB. Electrochemical study demonstrated that the new V2O5 film electrode had excellent Na+ insertion/extraction stability. Compared to the V2O5film electrode prepared without CTAB, the new V2O5 film electrode exhibited better electrochemical reaction reversibility, enhanced Na+ diffusion performance, and higher sodium storage specific capacity, which could be a very promising cathode material for sodium ion batteries.关键词
钠离子电池/正极材料/制备/电化学/纳米材料Key words
sodium ion batteries/cathode materials/preparation/electrochemistry/nanomaterials分类
通用工业技术引用本文复制引用
李延伟,李世玉,谢志平,姚金环,姜吉琼,张灵志..电化学沉积制备V2O5薄膜电极的表面结构及储钠性能[J].化工学报,2016,67(11):4771-4778,8.基金项目
国家自然科学基金项目（21263003，51664012，51464009）；广西自然科学基金项目（2015GXNSFGA139006，2014GXNSFBA118238）；中国科学院可再生能源重点实验室资助项目（y507k61001）。@@@@Foundation item：supported by the National Natural Science Foundation of China (21263003,51664012,51464009), the Natural Science Foundation of Guangxi (2015GXNSFGA139006,2014GXNSFBA118238) and Key Laboratory of Renewable Energy, Chinese Academy of Sciences (y507k61001) （21263003,51664012,51464009）
