CIESC Journal ›› 2010, Vol. 61 ›› Issue (10): 2703-2707.
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LI Yanwei; LI Yuexiao; YAO Jinhuan;IANG Jiqiong;ZHANG Zhenggang;LIU Changjiu
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李延伟;李月晓;姚金环;姜吉琼;张正刚;刘长久
Abstract:
Al substituted nickel hydroxide with interlayer SO-4 or NO-3 were synthesized by chemical coprecipitation method and their microstructure and morphology were characterized by X-ray diffraction (XRD),Fourier transform infrared (FT-IR)and scanning electron microscopy (SEM).The electrochemical performance of these samples was measured by cyclic voltammetry (CV), electrochemical impedence spectroscopy (EIS)and charge-discharge test.The results showed that better reaction reversibility, higher proton diffuse coefficient and discharge capacity were obtained for the nickel hydroxide with interlayer NO-3 than for that with interlayer SO-4.
Key words: 氢氧化镍, 阴离子, 微观结构, 电化学性能
氢氧化镍,
摘要:
采用化学共沉淀法制备出层间分别含有SO-4和NO-3的铝取代氢氧化镍样品。利用X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)和扫描电子显微镜(SEM)对样品的微观结构和表面形貌进行了分析。采用循环伏安(CV)、交流阻抗(EIS)和充放电测试表征了样品的电化学性能。结果表明,层间含有NO-3的铝取代氢氧化镍比层间含有SO-4的铝取代氢氧化镍具有更好的电化学反应可逆性、更高的质子传递系数和放电比容量。
关键词: 氢氧化镍, 阴离子, 微观结构, 电化学性能
LI Yanwei, LI Yuexiao, YAO Jinhuan, IANG Jiqiong, ZHANG Zhenggang, LIU Changjiu. Influence of intercalated anions on electrochemical performance of Al substituted nickel hydroxide[J]. CIESC Journal, 2010, 61(10): 2703-2707.
李延伟, 李月晓, 姚金环, 姜吉琼, 张正刚, 刘长久. 层间阴离子对铝取代氢氧化镍电化学性能的影响 [J]. 化工学报, 2010, 61(10): 2703-2707.
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