期刊
JOURNAL OF POWER SOURCES
卷 202, 期 -, 页码 352-356出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2011.11.028
关键词
Lithium manganese oxide; 5V spinel; Lithium titanium oxide; Lithium-ion battery
资金
- Educational Commission of Fujian Province, China [JA10072]
- Grant for Distinguish Young Scholar in Universities of Fujian Province, China [JA11040]
- Science Foundation of Fujian Province, China [2011J05021]
- National Basic Research Program of China (973 Program) [2007CB209702]
- National Natural Science Foundation of China [20473060, 29925310, 20021002]
- Creative Experiments Project for Undergraduate Students of Fujian Province, China [Fjnu2011-022]
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据