| 溶胶-凝胶法合成锂离子电池正极材料LiMn_2O_4 |
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| 引用本文： | 刘桥生,余灵辉,田冰冰,廉培超,王海辉.溶胶-凝胶法合成锂离子电池正极材料LiMn_2O_4[J].化工新型材料,2010,38(2). |
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| 作者姓名： | 刘桥生 余灵辉 田冰冰 廉培超 王海辉 |
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| 作者单位： | 华南理工大学化学与化工学院,广州,510641 |
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| 基金项目： | 广东省自然科学基金，教育部新世纪优秀人才基金 |
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| 摘 要： | 以醋酸锰、硝酸锂为原料,采用乙二胺四乙酸-柠檬酸(EDTA-CA)络合法,制备了正尖晶石型LiMn2O4超细粉末晶体。应用TG-DSC,XRD,CV及恒流充放电测试等手段对前躯体及LiMn2O4粉体进行性能表征,确定了其最终的合成温度为600℃。常温下,组装成半电池,初始放电容量为120.2mAh/g,循环50次后容量保持在70%左右。
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| 关 键 词： | 锂离子电池 溶胶-凝胶 正尖晶石锰酸锂 |
Preparation of LiMn_2O_4 for lithium ion batteries by sol-gel method |
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| Liu Qiaosheng,Yu Linghui,Tian Bingbing,Lian Peichao,Wang Haihui.Preparation of LiMn_2O_4 for lithium ion batteries by sol-gel method[J].New Chemical Materials,2010,38(2). |
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| Authors: | Liu Qiaosheng Yu Linghui Tian Bingbing Lian Peichao Wang Haihui |
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| Abstract: | The super-fine powders of spinel LiMn_2O_4 were synthesized using EDTA-citric acid(EDTA-CA)by solgel method with manganese acetate,lithium nitrate as raw materials.The precursor and synthesized powders of LiMn_2O_4 were characterized by TG-DSC,XRD,CV and galvanostatic charge and diseharge.It is found that the optimal sintering temperature was 600℃.At room temperature,the initial discharge capacity of the half cell was 120.2mAh/g,and the capacity can also remain 70%of inithl capacity after 50 cycles. |
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| Keywords: | lithium ion battery sol-gel spinel lithium manganese oxide |
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