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- 2015
尖晶石型LiMn1.9Al0.1O3.95F0.05材料的制备及其增强的倍率性能
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Abstract:
摘要 通过溶胶-凝胶和高温固相掺杂反应可控合成了形貌均匀、结晶性好的尖晶石型LiMn1.9Al0.1O3.95F0.05正极材料，探究了Al部分取代Mn、F部分取代O后对结构的影响，测试并比较了电极材料的倍率性能和循环充放电性能. 结果表明，尖晶石型LiMn1.9Al0.1O3.95F0.05和LiMn2O4有同样的晶型，但电极较传统的LiMn2O4电极倍率稳定性有显著提高. 在连续混合（如0.1C、0.5C和1C）充放电150次后，LiMn1.9Al0.1O3.95F0.05电极的容量仍能保持90%以上
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