表面覆CoOOH的球形Ni(OH)_2的制备及快充性能

电化学（中英文） ›› 2006, Vol. 12 ›› Issue (2): 205-209.

表面覆CoOOH的球形Ni(OH)_2的制备及快充性能

杨敏杰;南俊民;侯宪鲁;薛建军;崔燕;崔明;

华南师范大学化学与环境学院,华南师范大学化学与环境学院,广州市鹏辉电池有限公司,广州市鹏辉电池有限公司,天津大学化工学院,华南师范大学化学与环境学院广东广州510006,广东广州510006,广东广州511483,广东广州511483,天津300072,广东广州510006

收稿日期:2006-05-28 修回日期:2006-05-28 出版日期:2006-05-28 发布日期:2006-05-28

Preparation of Spherical Ni(OH)_2 Coated with CoOOH and Its Fast Charge Performance

YANG Min-jie~

(1),NAN Jun-min~(*1),HOU Xian-lu~(2),XUE Jian-jun~(2),CUI Yan~(3),CUI Ming~(1)(1.School of Chemistry and Environment,South China Normal University,Guangzhou,51006,Guangdong,China,2.Guangzhou Great Power Battery Co.,Ltd,Guangzhou 511483,Guangdong,China,3.School of Chemical Engineering and Technology,Tianjin University,Tianjin 30072,China

Received:2006-05-28 Revised:2006-05-28 Published:2006-05-28 Online:2006-05-28

摘要/Abstract

摘要： 应用化学沉淀-电化学氧化法,于球形N i(OH)2颗粒表面生成CoOOH包覆层,研究包覆处理对AA型高容MH/N i电池快充性能的影响,并由红外光谱和扫描电镜表征覆钴样品.结果表明,以包覆CoOOH的N i(OH)2作正极活性材料装配的电池较之于正极单一添加CoO的电池,其内阻降低了约3.4 mΩ,该电池快充时充电电压平台较低且在充电末期电池温度不超过55℃,首次放电效率达90.6%,快充循环寿命达300周次.

关键词: 球形Ni(OH)2, 表面包覆, CoOOH

Abstract: Spherical Ni(OH)_(2) was coated with CoOOH through chemical precipitation and electrolytic oxidation.The influences of CoOOH coating on fast charge performance ofMH/Ni battery were studied by preparing high capacity and fast charge AA size MH/Ni batteries.The sample coated with CoOOH was characterized by Infrared spectrum(IR) and scanning electron microscopy(SEM).The results showed that the internal resistance decreased 3.4 mΩ,the charge plateau lower and the cell temperrature was below 55 ℃ at the end of charging process when the cathode active material used Ni(OH)_2 coated with CoOOH as compared with that doped by CoO.In addition,an initial discharge efficiency of 90.6% and over 300 cycles lifetime were achieved when the batteries were fast charged.

Key words: Spherical nickel hydroxide, Surface modification, CoOOH, Fast charge

中图分类号:

TM910.4

杨敏杰;南俊民;侯宪鲁;薛建军;崔燕;崔明;. 表面覆CoOOH的球形Ni(OH)_2的制备及快充性能[J]. 电化学（中英文）, 2006, 12(2): 205-209.

YANG Min-jie~. Preparation of Spherical Ni(OH)_2 Coated with CoOOH and Its Fast Charge Performance[J]. Journal of Electrochemistry, 2006, 12(2): 205-209.

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