Synthesis and Performance Characterization of Li(Li0.15Ni0.21Fe0.21Mn0.45)O2 Cathode Material with Good High Temperature Cyclibility

Acta Chimica Sinica ›› 2007, Vol. 65 ›› Issue (7): 571-574. Next Articles

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具有良好高温循环性能的Li(Li_0.15Ni_0.21Fe_0.21Mn_0.45)O₂阴极材料的合成与性能表征

郑曦¹,2, 曹林¹, 朱文涛¹, 邱新平*^,1,2

(¹ 清华大学化学系有机光电子与分子工程实验室北京 100084)
(² 清华大学深圳研究生院先进电源实验室深圳 518055)

投稿日期:2006-08-09 修回日期:2006-11-16 发布日期:2007-04-14
通讯作者: 邱新平

Synthesis and Performance Characterization of Li(Li_0.15Ni_0.21Fe_0.21Mn_0.45)O₂ Cathode Material with Good High Temperature Cyclibility

ZHENG Xi¹,2; CAO Lin¹; ZHU Wen-Tao¹; QIU Xin-Ping*^,1,2

(¹Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084)
(²Laboratory of Advanced Power Sources, Graduate School of Tsinghua University at Shenzhen, Shenzhen 518055)

Received:2006-08-09 Revised:2006-11-16 Published:2007-04-14
Contact: QIU Xin-Ping

Abstract

Layered cathode material Li(Li_0.15Ni_0.21Fe_0.21Mn_0.45)O₂ was synthesized by a solid-state reaction with high temperature. ICP-AES was used to determine the exact content of every metal. The structure change was found during the charge-discharge processes via XRD. The good cyclibility at 55 ℃ was confirmed by electrochemical characteristics. It is particular that 80% of the initial capacity was kept after 428 cycle charge and discharge under a current density of 300 mA/g (2C).

Key words: high temperature, cathode material, lithium-ion battery, layered structure, cycle performance

Cite this article

ZHENG Xi^1,2; CAO Lin; ZHU Wen-Tao; QIU Xin-Ping*^,1,2. Synthesis and Performance Characterization of Li(Li_0.15Ni_0.21Fe_0.21Mn_0.45)O₂ Cathode Material with Good High Temperature Cyclibility[J]. Acta Chimica Sinica, 2007, 65(7): 571-574.

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具有良好高温循环性能的Li(Li_0.15Ni_0.21Fe_0.21Mn_0.45)O₂阴极材料的合成与性能表征

Synthesis and Performance Characterization of Li(Li_0.15Ni_0.21Fe_0.21Mn_0.45)O₂ Cathode Material with Good High Temperature Cyclibility

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具有良好高温循环性能的Li(Li0.15Ni0.21Fe0.21Mn0.45)O2阴极材料的合成与性能表征