超声波对α-Ni(OH)_2电极结构及电化学性能的影响
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Published in | 中国有色金属学报:英文版 Vol. 21; no. 12; pp. 2654 - 2659 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
2011
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Subjects | |
Online Access | Get full text |
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Author | 张仲举 朱燕娟 包杰 周卓均 叶贤聪 许庆盛 |
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AuthorAffiliation | 广东工业大学物理与光电工程学院,广州510006 |
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DocumentTitleAlternate | Effect of ultrasonic on structure and electrochemical performance of α-Ni(OH)_2 electrodes |
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Notes | Al/Co co-doped α-Ni(OH)2; ultrasonic co-precipitation method; proton diffusion coefficient; charge-transfer resistance; electrochemical performance 43-1239/TG Al/Co co-doped α-Ni(OH)2 samples were prepared by either ultrasonic co-precipitation method (Sample B) or co-precipitation method (Sample A). The crystal structure and particle size distribution of the prepared samples were examined by X-ray diffraction (XRD) and laser particle size analyzer, respectively. The results show that Sample B has more crystalline defects and smaller average diameter than Sample A. The cyclic voltammetry and electrochemical impedance spectroscopy measurements indicate that Sample B has better electrochemical performance than Sample A, such as better reaction reversibility, lower charge-transfer resistance and better cyclic stability. Proton diffusion coefficient of Sample B is 1.96×10-10cm2/s, which is two times as large as that (9.78×10-11cm2/s) of Sample A. The charge-discharge tests show that the discharge capacity (308 mA·h/g) of Sample B is 25 mA·h/g higher than that of Sample A (283 mA·h/g). ZHANG Zhong-ju, ZHU Yan-juan, BAO Jie, ZHOU Zhuo-jun, YE Xian-cong, XU Qing-sheng School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China |
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PublicationTitle | 中国有色金属学报:英文版 |
PublicationTitleAlternate | Transactions of Nonferrous Metals Society of China |
PublicationYear | 2011 |
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SubjectTerms | Al/Co复合掺杂α-Ni(OH)2 电化学性能 电荷转移电阻 质子扩散系数 超声波共沉淀法 |
Title | 超声波对α-Ni(OH)_2电极结构及电化学性能的影响 |
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