东莞理工学院学报
東莞理工學院學報
동완리공학원학보
JOURNAL OF DONGGUAN INSTITUTE OF TECHNOLOGY
2012年
3期
83-87
,共5页
锂离子电池%正极材料%溶胶凝胶法%锰酸锂
鋰離子電池%正極材料%溶膠凝膠法%錳痠鋰
리리자전지%정겁재료%용효응효법%맹산리
lithium-ion batteries%cathode material%sol-gel method%LiMn2O4
首次采用基于复合络合剂柠檬酸和β-环糊精的溶胶凝胶法制备了尖晶石型锰酸锂，并研究了煅烧温度对材料电化学性能的影响。电化学性能表明，700℃煅烧制备的材料具有优异的倍率和循环性能。在3C电流下此材料的首次和第200次放电比容量分别为102mAh／g和90．8mAh／g，容量保持率为89％。
首次採用基于複閤絡閤劑檸檬痠和β-環糊精的溶膠凝膠法製備瞭尖晶石型錳痠鋰，併研究瞭煅燒溫度對材料電化學性能的影響。電化學性能錶明，700℃煅燒製備的材料具有優異的倍率和循環性能。在3C電流下此材料的首次和第200次放電比容量分彆為102mAh／g和90．8mAh／g，容量保持率為89％。
수차채용기우복합락합제저몽산화β-배호정적용효응효법제비료첨정석형맹산리，병연구료단소온도대재료전화학성능적영향。전화학성능표명，700℃단소제비적재료구유우이적배솔화순배성능。재3C전류하차재료적수차화제200차방전비용량분별위102mAh／g화90．8mAh／g，용량보지솔위89％。
Spinel LiMn2O4 has been firstly synthesized by a sol-gel method based on composite chelating reagents of citric acid and β-cyclodextrin, and the effects of calcination temperatures on the electrochemical performance of the LiMn2O4 has also been investigated. The electrochemical results indicate that the spinel LiMn2O4 synthesized at 700℃exhibits good rate capability and cy- clic performance. It is 102 mAh/g and 90.8 mAh/g that are delivered at 3 C in the 1st and 200th cycles, respectively, with the re- tention of 89%
