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	Structure and electrochemical properties of LiFePO4 as the cathode of lithium ion battery
	Lu, JB ; Tang, ZL ; Le, B ; Zhang, ZT ; Shen, WC
	2010-05-10 ; 2010-05-10
关键词	lithium ion batteries LiFePO4 spherical processing electrochemical properties CONDUCTIVITY Chemistry, Multidisciplinary
中文摘要	Oliver phase LiFePO4 powder was successfully synthesized by solid-state reaction process and spherical processing. SEM observation confirmed that the resulatant product consisted of many spherical aggregates with diameters of 10-15 mu m. The cyclic voltammetric profile of battery with cathode of LiFePO4 shows the single and reversible mechanism for lithium ion extraction/insertion in cathode. The a. c. impedance spectra of the battery at different temperatures reveal that the electrochemical impedance of battery decreases with increasing ambient temperature. At the current density of 17 mA/cm(2), the batteries show a flat working voltage, little electrode polarity effect and nearly theoretical capacity. Below the current density of 170 mA/cm(2) the high capacity is kept. With the current density increasing further above 170 mA/cm(2), the capacity decreases fast and the electrode polarity effect is observed obviously. After cycling at a high current density, the batteries still show the high capacity at the low current density.
语种	中文 ; 中文
出版者	HIGHER EDUCATION PRESS ; BEIJING ; SHATANHOU ST 55, BEIJING 100009, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/21685]
专题	清华大学
推荐引用方式 GB/T 7714	Lu, JB,Tang, ZL,Le, B,et al. Structure and electrochemical properties of LiFePO4 as the cathode of lithium ion battery[J],2010, 2010.
APA	Lu, JB,Tang, ZL,Le, B,Zhang, ZT,&Shen, WC.(2010).Structure and electrochemical properties of LiFePO4 as the cathode of lithium ion battery..
MLA	Lu, JB,et al."Structure and electrochemical properties of LiFePO4 as the cathode of lithium ion battery".(2010).

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