| 氧化锌表面包覆Sn6O4(OH)4的制备及其在锌镍电池中的应用 | |
| Sn6O4(OH)4 Coated on ZnO Surface:Preparation and Application in Zinc-Nickel Secondary Battery | |
| 摘要: 采用水热-共沉淀法在氧化锌表面包覆锡化合物，利用扫描电子显微镜（SEM）、X射线衍射（XRD）和能谱分析（EDS）对制备的包覆ZnO材料进行表征。结果表明：XRD表明附着在氧化锌表面的是Sn6O4（OH）4，且结晶度较好；SEM测试显示在pH=12条件下，Sn6O4（OH）4能够很好地附着在氧化锌颗粒表面；EDS显示组成物中的元素包含Zn、Sn、O三种元素。利用循环伏安曲线（CV）、电化学阻抗谱（EIS）、倍率充放电技术对包覆ZnO材料进行了电化学性能的测试，结果表明：包覆Sn6O4（OH）4的ZnO可以提高锌负极的耐蚀性能，增大电荷转移电阻（Rct）；锌电极覆Sn6O4（OH）4量为3%时充放电效率最佳，在0.2C充放循环40次后充放电循环保持率仍有70%。 | |
| 关键词: 氧化锌 水热-共沉淀法 包覆锡 电化学性能 | |
| 基金项目: 国家自然科学基金面上项目（No.51774160）。 | |
| Abstract: The hydrothermal-coprecipitation method was successfully used to prepare Sn6O4(OH)4 coated on the surface of zinc oxide. The modified ZnO material was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive spectrometer (EDS) analysis. The results show:Sn6O4(OH)4 was coated on the surface of ZnO and the crystallinity was well at pH=12, and the coating composition is including Zn, Sn, O. The electrochemical performances of Sn6O4(OH)4-coated ZnO was investigated by cyclic voltammetry (CV), electro-chemical impedance spectroscopy (EIS) and charge-discharge technology. Compared with pure ZnO, The CV curves and the electrochemical impedance spectroscopy show that Sn6O4(OH)4-coated ZnO can improve the corrosion resistance and increase charge transfer resistance (Rct), Sn6O4(OH)4-coated ZnO electrode has best charge-discharge efficiency when the Sn6O4(OH)4 content is 3%, and the capacity retention ratio of the coated ZnO is about 70% after over 40 cycles with the rate of 0.2C, which is much higher than that of the pure ZnO. | |
| Keywords: zinc oxide hydrothermal-coprecipitation method Sn6O4(OH)4 coated electrochemical performance | |
| 投稿时间：2017-02-28 修订日期：2017-08-14 | |
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| 俞双林,俞小花,吕祥,王迎,冯攀,别汉波,谢刚.氧化锌表面包覆Sn6O4(OH)4的制备及其在锌镍电池中的应用[J].无机化学学报,2017,33(9):1573-1578. | |
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