常压回流掺钴钙锰矿锂离子电池正极材料

CORC > 厦门大学 > 2010年第16卷

	常压回流掺钴钙锰矿锂离子电池正极材料; Cobalt-doped Todorokite Prepared by Refluxing at Atmospheric Pressure as Lithium-ion Battery Cathode
	李瑞琦 ; 宋春华 ; 徐超 ; 涂丽杏 ; 邱国红 ; 刘凡 ; LI Rui-qi ; SONG Chun-hua ; XU Chao ; TU Li-xing ; QIU Guo-hong ; LIU Fan
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract8458.shtml
	2010-02-28
关键词	常压回流钙锰矿钴离子掺杂锂离子二次电池正极材料 refluxing at atmospheric pressure todorokite cobalt-doped lithium-ion secondary battery cathode materials
英文摘要	常压回流法制备掺杂钴离子的钙锰矿,X-射线衍射(XRD)、热重(TG)、化学分析等测试表明:钙锰矿均为单一相,组成为MgxCoyMnOz·nH2O,其中0.18≤x≤0.22、0≤y≤0.24、2.10≤z≤2.53、0.35≤n≤0.73.以掺钴钙锰矿作锂离子二次电池正极材料,组成为Tod-Co10%(10%Co的Mg0.18Co0.12MnO2.19·0.45H2O)电极放电性能最佳,其首次放电比容量为219mAh/g,100次循环充放电仍有102mAh/g.对比之下,未掺钴的Tod-Co0%电极(钙锰矿)首次放电比容量为211mAh/g,30次循环后为37mAh/g.; Cobalt-doped todorokites were prepared by refluxing at atmospheric pressure,and then charactered by X-ray diffraction(XRD),thermogravimetry(TG) and the analysis of chemical compositions.These measurements showed that all of the refluxing products were single phase of todorokites and the structure formulas were MgxCoyMnOz·nH2O,where 0.18 ≤ x ≤ 0.22,0 ≤ y ≤ 0.24,2.10 ≤ z ≤ 2.53,and 0.35 ≤ n ≤0.73.The electrochemical characteristics of cobalt-doped todorokites were examined as lithium insertion hosts for cathodes in rechargeable lithium batteries.The first discharge capacity of undoped todorokite electrode was 211 mAh/g and the discharge capacity became 37 mAh/g after 30 cycles.The Mg0.18Co0.12MnO2.19·0.45 H2O with doping Co 10% displayed the best discharge behavior,which showed a high discharge capacity of 219 mAh/g at first cycle and the cycling capacity of 102 mAh/g after 100 cycles.; 作者联系地址：华中农业大学农业部亚热带资源与环境重点开放实验室;; Author's Address: Key Laboratory of Subtropical Agriculture Resource and Environment,Ministry of Agriculture,Huazhong Agricultural University,Wuhan430070,China
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/58372]
专题	2010年第16卷
推荐引用方式 GB/T 7714	李瑞琦,宋春华,徐超,等. 常压回流掺钴钙锰矿锂离子电池正极材料, Cobalt-doped Todorokite Prepared by Refluxing at Atmospheric Pressure as Lithium-ion Battery Cathode[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract8458.shtml,2010.
APA	李瑞琦.,宋春华.,徐超.,涂丽杏.,邱国红.,...&LIU Fan.(2010).常压回流掺钴钙锰矿锂离子电池正极材料.http://electrochem.xmu.edu.cn/CN/abstract/abstract8458.shtml.
MLA	李瑞琦,et al."常压回流掺钴钙锰矿锂离子电池正极材料".http://electrochem.xmu.edu.cn/CN/abstract/abstract8458.shtml (2010).