| 铝/氟比对改性尖晶石锰酸锂性能的影响 |
| Influence of the n(Al)∶n(F) Ratio on Performance of Modified LiMn2O4 Materials |
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| 摘要: 采用草酸铝、氟化锂与尖晶石LiMn2O4进行高温固相反应，制备出改性尖晶石LiMn2O4材料。对材料进行了XRD、SEM分析及电性能测试，结果表明，改性材料均基本保持了尖晶石主体结构，晶格常数随n(Al)∶n(F)比例的增大而减小;Al3+、F-的引入可以引起材料颗粒表面形貌的变化，产生规则结晶，而颗粒表面结晶的大小受n(Al)∶ |
| 关键词: 尖晶石LiMn2O4 锂离子电池 高温固相反应 |
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| Abstract: LiMn2O4 materials modified by aluminum oxlate and lithium fluoride were synthesized by high-temperature solid-state reaction. The morphology， structure and electrochemical properties were investigated by XRD， SEM and electrochemical tests. The XRD results indicate that all the modified materials possess spinel LiMn2O4 structure， and the lattice parameters reduce with n(Al)∶n(F) increasing. The morphologies of modified materials are influenced by Al3+ and F-. The capacity loss after ten cycles for pure LiMn2O4 is 24.4%， whereas that for the materials modified by aluminum oxlate and LiF is 2.6%. |
| Keywords: spinel LiMn2O4 lithium-ion battery high temperature solid-state reaction |
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| 金维华,蔡振平,温力蓉.铝/氟比对改性尖晶石锰酸锂性能的影响[J].无机化学学报,2007,23(9):1599-1602. |
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