High performance LiFePO4 electrode materials: influence of colloidal particle morphology and porosity on lithium-ion battery power capability

被引：70

作者：

Doherty, Cara M. ^{[1
]}

Caruso, Rachel A. ^{[1
,2
]}

Drummond, Calum J. ^{[1
,3
]}

机构：

[1] CSIRO Mat & Sci Engn, Clayton, Vic 3168, Australia

[2] Univ Melbourne, Sch Chem, PFPC, Melbourne, Vic 3010, Australia

[3] CSIRO Mol & Hlth Technol, Clayton, Vic 3168, Australia

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2010年 / 3卷 / 06期

基金：

澳大利亚研究理事会;

关键词：

ELECTROCHEMICAL PROPERTIES; CATHODE MATERIALS; CARBON; SIZE; MECHANISM; MODEL;

D O I：

10.1039/b922898e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Porous colloidal particles of LiFePO4 have been prepared using water based synthesis methods in the presence of tri-block copolymer amphiphiles. A systematic investigation into the synthesis parameters revealed the importance of porosity, particle size, crystallinity and carbon content on the electrochemical properties. Mesopore formation and particle connectivity were critical for efficient electrolyte access for high power LiFePO4 electrode materials. Samples performed well at high rates with discharge capacities of 124 mA h g(-1) at 5 C and 113 mA h g(-1) at 10 C achieved. Discharge capacities of 164 mA h g(-1) were obtained at 0.1 C rates which are close to the theoretical capacity for LiFePO4 of 170 mA h g(-1).

引用

页码：813 / 823

页数：11

共 49 条

[1] Generation of hierarchical meso- and macroporous carbon from mesophase pitch by spinodal decomposition using polymer templates [J].