A phase-inversion process to prepare porous LiAl0.1Mn1.9O4 spinel for aqueous rechargeable lithium batteries

被引：31
作者：
Li, Zhaohui [1 ]
Yang, Jie [1 ]
Wang, Jingliang [1 ]
Tang, Jiaojun [1 ]
Lei, Gangtie [1 ]
Xiao, Qizhen [1 ]
机构：
[1] Xiangtan Univ, Key Lab Environmentally Friendly Chem & Applicat, Minist Educ, Coll Chem, Xiangtan 411105, Hunan, Peoples R China
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2012年 / 162卷
关键词：
Lithium manganese oxide; Phase inversion; Porous; Aqueous rechargeable lithium batteries; ELECTROCHEMICAL PERFORMANCE; ASYMMETRIC SUPERCAPACITOR; STRUCTURAL-CHANGES; ACTIVATED CARBON; CATHODE MATERIAL; ION BATTERY; HIGH-POWER; LIMN2O4; ELECTRODE; CYCLABILITY;
D O I：
10.1016/j.micromeso.2012.06.001
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A porous LiAl0.1Mn1.9O4 (P-LAMO) spinel was prepared by a phase-inversion process followed by calcined at 700 degrees C for 6 h in the air atmosphere. Its crystal structure was determined from X-ray diffraction (XRD) pattern, and the morphology was observed using the scanning electron microscope (SEM) and transmission electron microscope (TEM). In the 1.0 mol l(-1) Li2SO4 aqueous electrolyte, it can deliver the capacities of 117, 113, 104 and 88 mAh g(-1) at the rates of 1, 5, 10 and 20 C at room temperature, respectively. Even charged at 60 C, it is still able to deliver a capacity of 113 mAh g(-1) at 1 C with a coulomb efficiency of 98%. The results suggest that the product could be a promising cathode material for aqueous rechargeable lithium batteries. (C) 2012 Elsevier Inc. All rights reserved.
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收藏
页码：44 / 50
页数：7
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