The effect of synthesis parameters on the lithium storage performance of LiMnPO4/C

被引：40
作者：
Ramar, V. [1 ]
Saravanan, K. [1 ]
Gajjela, S. R. [1 ]
Hariharan, S. [1 ]
Balaya, P. [1 ]
机构：
[1] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore
来源：
ELECTROCHIMICA ACTA | 2013年 / 105卷
关键词：
Mesoporous; Carbon coating; Lithium-ion batteries; Storage performance; Lithium manganese phosphate; ELECTROCHEMICAL PERFORMANCE; SPRAY-PYROLYSIS; LIMPO4; M; HYDROTHERMAL SYNTHESIS; PHOSPHO-OLIVINES; PORE SYSTEMS; LIXMPO4; CATHODE; MN; FE;
D O I：
10.1016/j.electacta.2013.05.025
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
An architecture featuring carbon coated, interconnected nano-grains constructed with mesopores is developed for LiMnPO4 cathode material. This architecture facilitates enhanced lithium ionic and electronic transports; favours improved lithium storage performance. Mesoporous LiMnPO4/C electrode delivers discharge capacity of 140 mAh g(-1) at 0.05 C using galvanostatic cycling mode. This best electrochemical response of LiMnPO4/C at constant current mode is complemented by diffusion studies using cyclic voltammetry and impedance spectroscopy. Further, the interdependence of lithium storage performance on carbon content, milling time (2, 4, 6 and 10 h), grain size and porous characteristics (surface area, pore size and pore volume) is also discussed. Finally, the feasibility of LiMnPO4/C cathode is evaluated against Li4Ti5O12/C anode in a full cell. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：496 / 505
页数：10
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