锂电化学嵌入尖晶石型二氧化锰研究 |
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引用本文: | 吴智远,杨汉西,石中,李升宪,汪振道,范玉章.锂电化学嵌入尖晶石型二氧化锰研究[J].电池,1992(1). |
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作者姓名: | 吴智远 杨汉西 石中 李升宪 汪振道 范玉章 |
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作者单位: | 武汉大学化学系,武汉大学化学系,武汉大学化学系,武汉大学化学系,武汉大学化学系,武汉大学化学系 湖北 430072,湖北 430072,湖北 430072,湖北 430072,湖北 430072,湖北 430072 |
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摘 要: | 通过X—射线粉末衍射物相分析、微电极循环伏安法以及稳态极化曲线测量,研究了λ—MnO_2在非水锂电池体系中的充放电特性。发现在充放电过程中,涉及锂离子的嵌入、脱出过程,而λ—MnO_2的尖晶石骨架结构Mn_2]O_4保持不变。讨论了锂离子嵌入过程的机理。
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关 键 词: | 二氧化锰 电化学嵌入 锂电池 |
Studies of Electrochemical Insertion of Lithium into the Spinel Manganese Dioxide |
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Affiliation: | Department of Chemistry,Wuhan University,Hubei 430072Wu Zhiyuan Yang Hanxi Shi Zhong Li ShengxianWang Zhendao Fang Yuzhang |
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Abstract: | The charge and discharge behaviors of lambda-MnO2 cathode in 1M PC+LiClO4 were investigated by micro-electrode voltammetry,XRD technique and steady electrochemical curves. The result showed that the charge and discharge .processed of lambda-MnO2 cathode proceeded via lithium intercalation into and deintercalation from spinel framework of lambda-MnO2. During charge and descharge the spinel structure of lambda-MnO2 remained intact and showed excellent rechargeability. The mechanism of lithium intercalation process had been discussed. |
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Keywords: | Manganese Dioxide Electrochemical Intercalation Lithium Battery |
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