摘要
在硝酸钴溶液中,通过电沉积在镍箔基底上制备出了Co(OH)2薄膜.用X射线衍射仪(XRD)和场发射扫描电子显微镜(FESEM)表征了产物的结构和形貌,用红外光谱(FT-IR)对所制样品的组分进行了分析,用循环伏安和恒电流充放电等测试方法对其电化学性能进行了研究.结果表明,具有均匀片状网络形貌的Co(OH)2表现出优良的电化学性能,其单电极比电容值达1042F.g-1,有望成为电化学电容器电极材料.
Cobalt hydroxide film is electrodeposited on nickel foil in Co（NO3）2 aqueous solution. The structure and morphology of Co（OH）2 film are characterized using X-ray diffraction（XRD）and field emission scanning electron microscopy（FESEM）, respectively. The component of products is analyzed by FT-IR. The electrochemical performances are investigated by cyclic voltammetry and constant current charge/discharge techniques. The results show that the as-prepared materials are Co（OH）2 with a uniform sheet-like network morphology and have excellent electrochemical performances. The specific capacitance as single electrode is up to 1042 F·g^-1. So it is a promising electrode material for electrochemical capacitors.
出处
《西北师范大学学报（自然科学版）》
CAS
北大核心
2010年第2期64-68,共5页
Journal of Northwest Normal University(Natural Science)
基金
甘肃省自然科学基金资助项目(0803RJ2A005)
甘肃省教育厅研究生导师科研基金资助项目(0701-20)
关键词
电沉积
氢氧化钴
比电容
electrodeposition
cobalt hydroxide
specific capacitance
