Thermal stability and performance studies of LiCo1/3Ni1/3Mn1/3O2 with phosphazene additives for Li-ion batteries

被引：21

作者：

Ahn, Seyoung ^{[1
]}

Kim, Hyun-Soo ^{[1
]}

Yang, Sunhye ^{[1
]}

Do, Jung Yun ^{[2
]}

Kim, Byung Hwa ^{[3
]}

Kim, Ketack ^{[1
]}

机构：

[1] Korea Electrotechnol Res Inst, Battery Res Grp, Chang Won 641600, South Korea

[2] Pusan Natl Univ, Dept Chem Educ, Pusan 609735, South Korea

[3] Techno Semichem Co Ltd, R&D Ctr, Kong Ju 314240, Chungnam, South Korea

来源：

JOURNAL OF ELECTROCERAMICS | 2009年 / 23卷 / 2-4期

关键词：

Li-ion batteries; LiCo1/3Ni1/3Mn1/3O2; Flame retardant additives; Electrolytes; Thermal stability; Phosphazenes; LITHIUM; GRAPHITE;

D O I：

10.1007/s10832-008-9437-y

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Phosphazene derivatives as flame retardant (FR) additives were investigated to evaluate their thermal stability and performance in Li-ion batteries. Hexamethoxy-cyclo-tri-phosphazene (HMTP) and hexaethoxy-cyclo-tri-phosphazene (HETP) were added to the electrolytes of the test cells. Thermal stability and the performance influenced by the additives were evaluated using cathodes prepared with LiCo1/3Ni1/3Mn1/3O2. Concentration dependence on FR properties, rate capabilities, and cycle life was analyzed. The additives formed a surface layer on the cathode. The layer on the cathode reduced electrochemical reaction resistance, which improved the performance of the cells. Optimization studies show that HETP has better FR properties than does HMTP.

引用

页码：289 / 294

页数：6

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