Low-temperature electrochemical performances of LiFePO4 cathode materials for lithium ion batteries
文献类型：期刊论文
| 作者 | Wang, Fuqing1,3; Chen, Jian1; Tan, Zhicheng1; Wu, Minghao1,3; Yi, Baolian1; Su, Wei2; Wei, Zengfu2; Liu, Shinian2 |
| 刊名 | journal of the taiwan institute of chemical engineers
 |
| 出版日期 | 2014-07-01 |
| 卷号 | 45期号:4页码:1321-1330 |
| 关键词 | Low-temperature electrochemical performance Lithium iron phosphate Cathode materials Lithium ion batteries |
| 通讯作者 | 陈剑 |
| 英文摘要 | the key factors influencing the low-temperature electrochemical performances of lifepo4 cathode materials are systematically investigated by measuring and comparing the amount of surface carbon, particle size, and conductivities of lifepo4, lifepo4/c and electrolyte in the temperatures range of -20 to 40 degrees c. it is found that the low-temperature electrochemical performance of the material is improved obviously by coating the surface of lifepo4 with carbon. at -20 degrees c, the discharge specific capacity of lifepo4/c with 4 wt% surface carbon is 81.4 mah/g, while the uncoated lifepo4 only delivers the discharge specific capacity of 27.7 mah/g. the low-temperature electrochemical performance of lifepo4/c has no significant change as increasing the carbon content, but is further improved by reducing the particle size. in order to understand the difference of low-temperature electrochemical performance between the carbon-coated and uncoated lifepo4 cathodes, the ionic conductivity of electrolyte, the electronic/ionic conductivities of lifepo4 and lifepo4/c at various temperatures were measured. the electronic conductivity of lifepo4 with 4.9 x 10(-11) s/cm at -20 degrees c is found to be responsible for its poor low-temperature electrochemical performance. however, for the lifepo4/c, the low-temperature electrochemical performance is mainly determined by its ionic conductivity, therefore, the decrease of the particle size can increase the low-temperature electrochemical performance. (c) 2014 taiwan institute of chemical engineers. published by elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; technology |
| 学科主题 | 物理化学 |
| 类目[WOS] | engineering, chemical |
| 研究领域[WOS] | engineering |
| 关键词[WOS] | electrical-conductivity ; hydrothermal synthesis ; diffusion-coefficient ; phospho-olivines ; room-temperature ; carbon ; composites ; electrode ; impact ; nanocomposites |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000340352000028 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/143910]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Adv Rechargeable Batteries Lab, Dalian 116023, Peoples R China 2.Guangdong Power Grid Corp, Elect Power Res Inst, Guangzhou 510080, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Fuqing,Chen, Jian,Tan, Zhicheng,et al. Low-temperature electrochemical performances of LiFePO4 cathode materials for lithium ion batteries[J]. journal of the taiwan institute of chemical engineers,2014,45(4):1321-1330. |
| APA | Wang, Fuqing.,Chen, Jian.,Tan, Zhicheng.,Wu, Minghao.,Yi, Baolian.,...&Liu, Shinian.(2014).Low-temperature electrochemical performances of LiFePO4 cathode materials for lithium ion batteries.journal of the taiwan institute of chemical engineers,45(4),1321-1330. |
| MLA | Wang, Fuqing,et al."Low-temperature electrochemical performances of LiFePO4 cathode materials for lithium ion batteries".journal of the taiwan institute of chemical engineers 45.4(2014):1321-1330. |
入库方式： OAI收割
来源：大连化学物理研究所
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