| 氧化锌表面包覆Sn_6O_4(OH)_4的制备及其在锌镍电池中的应用 |
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| 引用本文： | 俞双林,俞小花,吕祥,王迎,冯攀,别汉波,谢刚.氧化锌表面包覆Sn_6O_4(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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| 作者姓名： | 俞双林 俞小花 吕祥 王迎 冯攀 别汉波 谢刚 |
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| 作者单位： | 昆明理工大学冶金与能源工程学院, 昆明 650093,昆明理工大学冶金与能源工程学院, 昆明 650093,昆明理工大学冶金与能源工程学院, 昆明 650093,昆明理工大学冶金与能源工程学院, 昆明 650093,昆明理工大学冶金与能源工程学院, 昆明 650093,昆明理工大学冶金与能源工程学院, 昆明 650093,昆明理工大学冶金与能源工程学院, 昆明 650093;共伴生有色金属资源加压湿法冶金技术国家重点实验室, 昆明 650500 |
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| 基金项目： | 国家自然科学基金面上项目（No.51774160）。 |
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| 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Sn_6O_4(OH)_4,且结晶度较好;SEM测试显示在p H=12条件下,Sn_6O_4(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Sn_6O_4(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Sn_6O_4(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%。
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| 关 键 词： | 氧化锌 水热-共沉淀法 包覆锡 电化学性能 |
| 收稿时间： | 2017/2/28 0:00:00 |
| 修稿时间： | 2017/8/14 0:00:00 |
Sn6O4(OH)4 Coated on ZnO Surface:Preparation and Application in Zinc-Nickel Secondary Battery |
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| YU Shuang-Lin,YU Xiao-Hu,L&#; Xiang,WANG Ying,FENG Pan,BIE Han-Bo and XIE Gang.Sn6O4(OH)4 Coated on ZnO Surface:Preparation and Application in Zinc-Nickel Secondary Battery[J].Chinese Journal of Inorganic Chemistry,2017,33(9):1573-1578. |
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| Authors: | YU Shuang-Lin YU Xiao-Hu L&#; Xiang WANG Ying FENG Pan BIE Han-Bo and XIE Gang |
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| Institution: | Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China,Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China,Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China,Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China,Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China,Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China and Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China;State Key Laboratory of Common Associated Non-ferrous Metal Resources Pressure Hydrometallurgy Technology, Kunming 650500, China |
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| 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. |
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| Keywords: | zinc oxide hydrothermal-coprecipitation method Sn6O4(OH)4 coated electrochemical performance |
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