Synthesis of LiCoMnO4 via a sol-gel method and its application in high power LiCoMnO4/Li4Ti5O12 lithium-ion batteries

被引：34

作者：

Huang, Xingkang ^{[1
]}

Lin, Min ^{[1
]}

Tong, Qingsong ^{[1
]}

Li, Xiuhua ^{[1
]}

Ruan, Ying ^{[1
]}

Yang, Yong ^{[2
]}

机构：

[1] Fujian Normal Univ, Dept Chem, Fuzhou 35007, Peoples R China

[2] Xiamen Univ, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2012年 / 202卷

基金：

中国国家自然科学基金;

关键词：

Lithium manganese oxide; 5V spinel; Lithium titanium oxide; Lithium-ion battery; ELECTROCHEMICAL PROPERTIES; HYDROTHERMAL SYNTHESIS; SPINEL; LINI0.5MN1.5O4; LIMN2O4; LI; CO; TRANSITION; EPR; NI;

D O I：

10.1016/j.jpowsour.2011.11.028

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

A LiCoMnO4 (5V spinel) material has been synthesized by annealing a sol-gel precursor utilizing lithium acetate, cobalt acetate, manganese acetate, and citric acid. The as-prepared sample has been determined to be LiCo1.09Mn0.91O4 via inductive coupled plasma-atomic emission spectroscopy. The deviation of the molar ratio of Co/Mn from 1:1 is designed to minimize the amount of LiMn2O4 impurity in our sample. The produced spinel material possesses an initial discharge capacity of 87.1 mAh g(-1) with two voltage plateaus at 5.1 and 4.9 V. The LiCo1.09Mn0.91O4 cathode has been assembled with a Li4Ti5O12 anode to form a full-cell which delivered a discharge capacity of 131.2 mAh g(-1), centered at 3.2 V. It is of great interest that despite the low coulombic efficiency of the full-cell, it shows good cyclic performance. In addition, The LiCo1.09Mn0.91O4/Li4Ti5O12 cell shows an excellent rate capability, delivering a capacity of 84.2 mAh g(-1), corresponding to a high power density of 4.70 kW kg(-1) at the current density of 1700 mA g(-1). (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：352 / 356

页数：5

共 25 条

[1]

Suppressing the charge-ordering transition in LiMn2O4 through substitution of Li by Mg [J].