Electrochemical behavior of solid lithium manganate (LiMn2O4) in aqueous neutral electrolyte solutions

被引:80
作者
Jayalakshmi, M
Rao, MM
Scholz, F
机构
[1] Indian Inst Chem Technol, Inorgan Div, Hyderabad 500007, Andhra Pradesh, India
[2] Univ Greifswald, Inst Chem & Biochem, D-17489 Greifswald, Germany
关键词
D O I
10.1021/la0340448
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Lithium manganate (LiMn2O4) was synthesized by a very simple low-temperature solution combustion technique. The product was characterized for its phase formation and composition by X-ray diffraction and inductively coupled plasma spectroscopy. The electrochemical behavior of this material in aqueous neutral electrolyte solutions was investigated in an effort to find a means of making it a usable electrode material for rechargeable battery systems in aqueous electrolytes. Cyclic voltammetric and chronopotentiometric studies of solid LiMn2O4 immobilized on a paraffin-impregnated graphite electrode were carried out in various aqueous neutral electrolyte solutions. LiMn2O4 was shown to undergo reversible insertion of K+ Li+, and NH4+ ions from neutral electrolyte solutions. Energy-dispersive X-ray (EDX) detection of electrochemically treated LiMn2O4 proved the presence of the intercalated K+ ion. The intercalation of the K+ ion was partial, as is shown by the weight percent analysis of EDX detection results.
引用
收藏
页码:8403 / 8408
页数:6
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