| Al掺杂及Al_2O_3表面包覆改性尖晶石LiMn_2O_4的电化学性能 |
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| 引用本文： | 崔永丽,吴超,魏涛,史月丽,庄全超,孙智. Al掺杂及Al_2O_3表面包覆改性尖晶石LiMn_2O_4的电化学性能[J]. 化学通报, 2011, 0(8): 742-749 |
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| 作者姓名： | 崔永丽 吴超 魏涛 史月丽 庄全超 孙智 |
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| 作者单位： | 中国矿业大学材料科学与工程学院; |
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| 基金项目： | 中央高校基本科研业务费专项资金(2010QNB04,2010QNB05)资助 |
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| 摘 要： | 合成了含1.5（wt）%Al2O3表面包覆的LiMn2O4和不同摩尔量Al体相掺杂的LiAlxMn2-xO4（x=0.1,0.2,0.3,0.4）电极材料。利用XRD和FSEM对制备材料的物相和形貌进行表征。结果表明,表面包覆和体相掺杂没有改变尖晶石LiMn2O4的晶体结构,所有衍射峰都归属于Fd3m空间群,但其衍射峰...
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| 关 键 词： | 锂离子电池 尖晶石LiMn2O4 Al掺杂 Al2O3表面包覆 电化学阻抗谱 |
Electrochemical Performance of Spinel LiMn_2O_4 Modified |
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| Cui Yongli,Wu Chao,Wei Tao,Shi Yueli,Zhuang Quanchao,Sun Zhi. Electrochemical Performance of Spinel LiMn_2O_4 Modified[J]. Chemistry, 2011, 0(8): 742-749 |
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| Authors: | Cui Yongli Wu Chao Wei Tao Shi Yueli Zhuang Quanchao Sun Zhi |
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| Affiliation: | Cui Yongli,Wu Chao,Wei Tao,Shi Yueli,Zhuang Quanchao,Sun Zhi(College of Material Science and Engineer,China University of Mining and Technology,Xuzhou 221116) |
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| Abstract: | The cathode materials of spinel LiMn2O4 coated with 1.5(wt)%Al2O3 and Al doped LiAlxMn2-xO4(x=0.1,0.2,0.3,0.4)were synthesized.The structures and morphologies of the as-prepared materials were characterized by X-ray diffraction(XRD) and Field scanning electron microscopy(FSEM).The results showed that the diffraction of LiMn2O4 modified is similar,with all the peaks index able in the Fd3m space group,but the positions of the diffraction peak shift to higher angle;Al2O3particles appear on the surface of the c... |
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| Keywords: | Li-ion battery Spinel LiMn2O4 Dope Coat EIS |
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