锂离子蓄电池正极材料尖晶石型锰酸锂的制备

钴酸锂、镍酸锂和锰酸锂化合物是近年来锂离子蓄电池最具吸引力的三种正极材料。从比能量、环境污染和价格方面看 ,锰酸锂化合物最具前景。重点阐述了尖晶石型锰酸锂化合物的制备方法 ,诸如 :固相反应法、Pechini法、溶胶 凝胶法、软化学法、乳胶干燥法、熔融提渍法和微波合成法 ,以及相应的电化学性能。从结构化学角度分析了尖晶石构型锰酸锂材料的充放电机理和产生Jahn Teller效应的原因。

Preparation of spinel-structure lithium manganese oxides,the positive materials for lithium-ion battery

Cobalt lithium dioxide, nickel lithium dioxide and manganese lithium oxide are the attractive positive materials for lithium-ion battery in recent years. From the point-of-view of specific energy, environmental pollution (toxicity) and cost, lithium manganese oxide will be the most promising compound. The methods for preparing spinel lithium manganese oxides, such as solid reaction method, Pechini process, sol-gel method, soft-chemical method, emulsion-drying method, melt-impregnation method and microwave synthesis method were described emphatically as well as their related electrochemical properties. The charge-discharge mechanism of lithium manganese oxide material and the reason of Jahn-Teller effect were also analyzed from the angle of structural chemistry.