The increasing demand for portable electronic devices is driving the development of cheap，efficient,compact，lightweight and environmental friendly batteries systems.LiMn<,2>O<,4> is considered to be proposedas potential alternative materials，because of its significant low cost，low pollution and enhanced safety inovercharge. However，LiMn<,2>O<,4> electrode has many problems，such as Jahn-Teller distortion effect and Mndissolution. Itt this study，the spinet LiMn<,2>O<,4> and two Bismuth modified LiMn204 materials(prepared bydifferent routes)were compared to study the effect of synthesis on the electrochemistry performance of Bismuth modified LiMn<,2>O<,4> materials.
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