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铬对尖晶石锂锰氧化物电化学性质的影响 被引量:2

Electrochemical Effect of Cr Doping in LiMn_2O_4
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摘要 研究了纯尖晶石锂锰氧化物和掺铬尖晶石锂锰氧化物粉末微电极的循环伏安曲线和交流阻抗谱图,结果表明;掺铬样品循环稳定性明显增加,但它的氧化还原峰的位置发生正移,峰形宽化,两步嵌脱锂的量也由相等变为不等,反应电阻增加。 CV and EIS of LiMn2O4 and LiCr0.16Mn1.84O4 were studied by using a powder microelectrodes. It was seen that Comparing with pure spinel lithium maganese oxides, the cycling stability of Crdoped lithium maganese oxides increased, the two redox peaks shift toward higher potentials and became wider. For Crdoped lithium maganese oxide, the twostage redox amount of lithium was unequal and the chargetransfer resistance increased.
作者 陶英 李伟善
出处 《中国锰业》 2003年第1期7-9,共3页 China Manganese Industry
基金 广东省自然科学基金资助课题(011443) 华南师范大学学生课外科研立项项目专项金费(2002)
关键词 尖晶石锂锰氧化物 循环伏安曲线 交流阻抗谱 掺杂 锂离子电池 spinel lithium maganese oxide Cr-doped CV EIS
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