Characteristics of lithium iron phosphate mixed with nano-sized acetylene black for rechargeable lithium-ion batteries

被引：13
作者：
Sun, Guoen [1 ,2 ]
Jin, Bo [1 ,2 ]
Sun, Guangping [1 ,2 ]
Jin, Enmei [3 ]
Gu, Hal-Bon [3 ]
Jiang, Qing [1 ,2 ]
机构：
[1] Jilin Univ, Key Lab Automobile Mat, Minist Educ, Changchun 130025, Peoples R China
[2] Jilin Univ, Sch Mat Sci & Engn, Changchun 130025, Peoples R China
[3] Chonnam Natl Univ, Dept Elect Engn, Kwangju 500757, South Korea
来源：
JOURNAL OF APPLIED ELECTROCHEMISTRY | 2011年 / 41卷 / 01期
基金：
中国博士后科学基金;
关键词：
Lithium iron phosphate; Lithium-ion batteries; High-rate; CATHODE MATERIALS; ELECTROCHEMICAL PROPERTIES; MAGNETIC-PROPERTIES; ELECTRODE MATERIAL; IN-SITU; LIFEPO4; LIMN2O4; CARBON; SCATTERING; TRANSPORT;
D O I：
10.1007/s10800-010-0213-8
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Lithium iron phosphate mixed with nano-sized acetylene black (LiFePO4-AB) was synthesized by a hydrothermal method and subsequent high-energy ball-milling process. Different contents of AB were added to improve the electronic conductivity of LiFePO4. The structural and morphological performance of LiFePO4-AB was investigated by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscope, and high-resolution transmission electron microscope. LiFePO4-AB/Li batteries were fabricated in an argon-filled glove box, and their electrochemical performance was analyzed by cyclic voltammetry and charge/discharge tests. The XRD results demonstrate that LiFePO4-AB has an olivine-type structure indexed to the orthorhombic Pnma space group. LiFePO4-AB/Li battery with 10 wt% AB shows the best high-rate discharge properties with the discharge capacities of 116 mAh g(-1) at 1 C and 85 mAh g(-1) at 10 C at room temperature.
引用
收藏
页码：99 / 106
页数：8
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