Coaxial electrospinning fabrication and electrochemical properties of LiFePO4/C/Ag composite hollow nanofibers

	Coaxial electrospinning fabrication and electrochemical properties of LiFePO4/C/Ag composite hollow nanofibers
	Shao DQ ; Wang JX ; Dong XT ; Yu WS ; Liu GX ; Zhang FF ; Wang LM
刊名	journal of materials science-materials in electronics
	2013
卷号	24 期号:12 页码:4718-4724
关键词	CARBON-COATED LIFEPO4 HYDROTHERMAL SYNTHESIS LITHIUM BATTERIES PERFORMANCE NANOPARTICLES NANOWIRE
ISSN号	0957-4522
通讯作者	dong xt
中文摘要	lifepo4/c/ag composite hollow nanofibers were synthesized by calcination of the coaxial electrospun nanofibers with polyvinyl pyrrolidone (pvp) as core and [lioh + fe(no3)(3) + h3po4]/pvp/agno3 as shell. pvp was used as the electrospinning template and carbon source. during the calcination, lifepo4 precursor was transformed to lifepo4 while agno3 and pvp were decomposed into silver and carbon. the morphology and properties of the as-prepared samples were characterized by x-ray diffraction, scanning electron microscopy, bet specific surface area analysis, electrochemical impedance spectroscopy and galvanostatic charge-discharge measurements. the results indicate that the mean diameter of as-prepared lifepo4/c/ag composite hollow nanofibers is 154.5 +/- a 18.6 nm and the bet specific surface area is 119.14 m(2) g(-1). the addition of silver and carbon does not affect the structure of lifepo4, but improves its electrochemical performances. at the current density of 0.2 c, the initial discharge capacity of lifepo4/c/ag hollow nanofibers electrode is 138.71 mah g(-1), which is higher than that of lifepo4/c nanofibers electrode. the improved specific capacity may be attributed to increase electrode conductivity after the introduction of silver. the formation mechanism of the lifepo4/c/ag composite hollow nanofibers was also proposed.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000327127900008
公开日期	2014-04-15
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49434]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Shao DQ,Wang JX,Dong XT,et al. Coaxial electrospinning fabrication and electrochemical properties of LiFePO4/C/Ag composite hollow nanofibers[J]. journal of materials science-materials in electronics,2013,24(12):4718-4724.
APA	Shao DQ.,Wang JX.,Dong XT.,Yu WS.,Liu GX.,...&Wang LM.(2013).Coaxial electrospinning fabrication and electrochemical properties of LiFePO4/C/Ag composite hollow nanofibers.journal of materials science-materials in electronics,24(12),4718-4724.
MLA	Shao DQ,et al."Coaxial electrospinning fabrication and electrochemical properties of LiFePO4/C/Ag composite hollow nanofibers".journal of materials science-materials in electronics 24.12(2013):4718-4724.