Optimization of LiFePO4 cathode material based on phosphorus doped graphite network structure for lithium ion batteries

doi:10.1007/s11581-018-2744-7

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	Optimization of LiFePO4 cathode material based on phosphorus doped graphite network structure for lithium ion batteries
	Li, Chunlei 2,3; Xie, Yingchun 2,3; Zhang, Ningshuang 2,3; Ai, Ling 2,3; Liang, Youwei 2,3; Tuo, Kuanyou 2,3; Ye, Xiushen 1; Jia, Guofeng 1; Li, Shiyou 1,2,3
刊名	IONICS
	2019-03
卷号	25 期号:3 页码:927-937
关键词	Lithium ion battery Cathode material LFP Phosphorus Graphite Network structure
ISSN号	0947-7047
DOI	10.1007/s11581-018-2744-7
英文摘要	Lithium iron phosphate (LiFePO4) has been recommended as a hopeful cathode material for lithium ion batteries (LIBs) in the future due to its lots of advantages, such as stable operating voltage, excellent cycle performance, controllable cost, and environmental protection. However, pure LiFePO4 (LFP) shows bad reversible capacity and charge/discharge performance at high rate. Many methods including decrease of particle size, optimization of coating carbon, introduction of conductive polymer, and doping of metal or non-metallic element have been developed to improve the electrochemical performance of LFP cathode material. In this study, LFP/C-P composite cathodes were prepared successfully by a facile sol-gel approach that graphite was used to generate a carbon network structure and triphenylphosphine was used to greatly facilitate generation of a network connecting passage. Electrochemical test results show that LFP/C-P composite cathode has achieved a remarkable improvement in capacity and apparent ascension in rate performance. Compared with LFP, LFP/C, and LFP-P cathode, LFP/C-P composite material shows the best electrochemical performance with a discharge capacity of 168.8mAhg(-1) and a remarkable retention rate of 98.8% over 100cycles at 0.1C.
资助项目	Transformation of Scientific and Technological Achievements of Gansu Institutions of Higher Education[2017D-04]
WOS研究方向	Chemistry ; Electrochemistry ; Physics
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000461339000003
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32072]
专题	石油化工学院
通讯作者	Li, Shiyou
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China 2.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Gansu, Peoples R China 3.Gansu Engn Lab Cathode Mat Lithium Ion Battery, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Chunlei,Xie, Yingchun,Zhang, Ningshuang,et al. Optimization of LiFePO4 cathode material based on phosphorus doped graphite network structure for lithium ion batteries[J]. IONICS,2019,25(3):927-937.
APA	Li, Chunlei.,Xie, Yingchun.,Zhang, Ningshuang.,Ai, Ling.,Liang, Youwei.,...&Li, Shiyou.(2019).Optimization of LiFePO4 cathode material based on phosphorus doped graphite network structure for lithium ion batteries.IONICS,25(3),927-937.
MLA	Li, Chunlei,et al."Optimization of LiFePO4 cathode material based on phosphorus doped graphite network structure for lithium ion batteries".IONICS 25.3(2019):927-937.