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中文摘要：
选用金属醋酸盐和柠檬酸配体，采用溶胶一凝胶法合成出锂离子电池正极材料Li1.05Mn2O4．通过优化溶液的pH值和合成温度，包括预烧温度和灼烧温度，制备出纳米尺寸颗粒占13．05％的样品．X射线衍射分析表明，样品为尖晶石型结构，晶格常数a=0．823nm．扣式电池充放电性能测试的结果表明，合成的Li1．05Mn2O4样品具有良好的充放电循环性能，0．1C充放电循环100次容量损失仅为4．5％．
英文摘要：
Li1.05Mn2O4 samples were synthesized from aqueous solutions of metal acetates containing citric acid as a chelating agent by a sol-gel method. The synthetic conditions, such as pH conditions of chelating solutions, pretreated and calcination temperatures, were studied. X-ray diffraction analysis showed that Li1.05Mn2O4 sample prepared under optimal conditions had a spinel structure with a crystal lattice constant of 0.823 nm. The size analysis showed that the nanoparticles were about 13.05 % by volume. The charge-discharge measurements of coin batteries indicated better cyclic performance of the sample. The capacity loss after the 100th charge-discharge cycle at 0. 1 C was only 4.5 %.
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