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题名:
Synthesis and electrochemical performance of Li2FeSiO4/C as cathode material for lithium batteries
作者: Huang, Xiaobing1,2; Li, Xing3; Wang, Haiyan4; Pan, Zhonglai; Qu, Meizhen1; Yu, Zuolong1
刊名: SOLID STATE IONICS
出版日期: 2010-10-07
卷号: 181, 期号:31-32, 页码:1451-1455
关键词: Lithium ion battery ; Solid-state reaction ; Li2FeSiO4/C ; Pitch
文章类型: Article
英文摘要: Li2FeSiO4/C cathode material was synthesized by a traditional solid-state reaction method with Li2CO3, FeC2O4 center dot 2H(2)O, nano SiO2 as starting materials and pitch as the carbon source. For comparison, the Li2FeSiO4/C with glucose as the carbon source and the pristine Li2FeSiO4 were also prepared. The as-prepared materials were characterized by X-ray diffraction, scanning electron microscopy, elementary analyzer, BET specific surface area, galvanostatic charge-discharge test and AC impedance spectroscopy. The results demonstrated that the Li2FeSiO4/C composites showed better electrochemical properties compared with the pristine Li2FeSiO4. Surprisingly, the Li2FeSiO4/C with pitch as carbon source exhibited the best electrochemical properties among the three samples, it delivered a specific discharge capacity of 139 mAh g(-1), 127 mAh g(-1), 118 mAh g(-1) and 103 mAh g(-1) at 0.2 C, 0.5 C, 1 C and 2 C, respectively. After 100 cycles at the rate of 1 C, the discharge capacity remained 93.6% of its initial value. (C) 2010 Elsevier B.V. All rights reserved.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Chemistry, Physical ; Physics, Condensed Matter
研究领域[WOS]: Chemistry ; Physics
关键词[WOS]: LIFEPO4/C COMPOSITE CATHODE ; ION BATTERIES ; SURFACE ; PRECURSORS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000284188400010
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3379
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610041, Peoples R China
4.Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

Recommended Citation:
Huang, Xiaobing,Li, Xing,Wang, Haiyan,et al. Synthesis and electrochemical performance of Li2FeSiO4/C as cathode material for lithium batteries[J]. SOLID STATE IONICS,2010,181(31-32):1451-1455.
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