Stability and Li+ extraction/adsorption properties of LiMxMn2-xO4 (M = Ni, Al, Ti; 0 ≤ x ≤ 1) in aqueous solution

被引：59

作者：

Ma, Li-Wen ^{[1
]}

Chen, Bai-Zhen ^{[1
]}

Shi, Xi-Chang ^{[1
]}

Zhang, Wen ^{[1
]}

Zhang, Kun ^{[1
]}

机构：

[1] Cent South Univ, Sch Met Sci & Engn, Changsha 410083, Hunan, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2010年 / 369卷 / 1-3期

关键词：

Lithium manganese oxide; Substitution; Stability; Adsorption; ELECTROCHEMICAL PROPERTIES; CATHODE MATERIALS; PROTON INSERTION; LITHIUM; EXCHANGE; SPINEL; ADSORPTION; EXTRACTION; FE; CO;

D O I：

10.1016/j.colsurfa.2010.08.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Series spinels LiMxMn2-xO4 (M = Ni, Al, Ti; 0 <= x <= 1) were synthesized and a study of their stability and Li+ extraction and adsorption properties in aqueous solution was carried out. XRD analysis shows that pure cation-substituted spinets were obtained for x <= 0.5, impurity or cation disordering occurred when x >= 0.7. Ni and Al are incorporated into the spinel structures with cell contractions; but the incorporated Ti has an opposite effect. All the three cation-substituted spinels LiM0.5Mn1.5O4 (M = Ni, Al, Ti) maintain the spinel structures and morphologies after acid treatment, but their stability and Li+ extraction and adsorption behaviors differ from each other. LiAl0.5Mn1.5O4 shows a relatively high Li extraction ratio and relatively low Mn and Al extraction ratios during acid treatment, and in the subsequent adsorption experiment it shows a better Li+ adsorption performance which fits Langmuir isotherm. LiNi0.5Mn1.5O4 and LiTi0.5Mn1.5O4 do not show satisfying Li+ extraction and adsorption properties because of the significant cell contraction or expansion. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：88 / 94

页数：7

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