中山大学学报(自然科学版)
中山大學學報(自然科學版)
중산대학학보(자연과학판)
ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS SUNYATSENI
2007年
z1期
281-282
,共2页
刘长久%易凌英%李继春%吴华斌
劉長久%易凌英%李繼春%吳華斌
류장구%역릉영%리계춘%오화빈
阴阳离子复合掺杂%溶胶-凝胶法%LiCu0.05Mn1.95O3.9F0.1%电化学性能
陰暘離子複閤摻雜%溶膠-凝膠法%LiCu0.05Mn1.95O3.9F0.1%電化學性能
음양리자복합참잡%용효-응효법%LiCu0.05Mn1.95O3.9F0.1%전화학성능
Anion-cation multiple dope%sol-gel method%LiCu0.05Mn1.95O3.9F0.1%electrochemical property
以溶胶-凝胶法合成了阴阳离子复合掺杂尖晶石型锰酸锂正极材料LiCu0.05Mn1.95O3.9F0.1,XRD表征合成产物具有良好的尖晶石结构;SEM测试表明所合成产物的颗粒达到了亚微米级,且分布均匀,形貌较好.以该物质作为锂离子电池的正极材料组装成扣式电池,经充放电循环测试可知: LiCu0.05Mn1.95O3.9F0.1材料比LiMn2O4正极材料能够更好地抑制电池的可逆容量在充放电过程中的衰减,循环性能有了很大改善,表现出很好的电化学可逆特性.
以溶膠-凝膠法閤成瞭陰暘離子複閤摻雜尖晶石型錳痠鋰正極材料LiCu0.05Mn1.95O3.9F0.1,XRD錶徵閤成產物具有良好的尖晶石結構;SEM測試錶明所閤成產物的顆粒達到瞭亞微米級,且分佈均勻,形貌較好.以該物質作為鋰離子電池的正極材料組裝成釦式電池,經充放電循環測試可知: LiCu0.05Mn1.95O3.9F0.1材料比LiMn2O4正極材料能夠更好地抑製電池的可逆容量在充放電過程中的衰減,循環性能有瞭很大改善,錶現齣很好的電化學可逆特性.
이용효-응효법합성료음양리자복합참잡첨정석형맹산리정겁재료LiCu0.05Mn1.95O3.9F0.1,XRD표정합성산물구유량호적첨정석결구;SEM측시표명소합성산물적과립체도료아미미급,차분포균균,형모교호.이해물질작위리리자전지적정겁재료조장성구식전지,경충방전순배측시가지: LiCu0.05Mn1.95O3.9F0.1재료비LiMn2O4정겁재료능구경호지억제전지적가역용량재충방전과정중적쇠감,순배성능유료흔대개선,표현출흔호적전화학가역특성.
The anion-cation multiple doped LiCu0.05Mn1.95O3.9F0.1 used as cathode material was synthesized by sol-gel method.X-ray diffraction showed that the sample has perfect spinel structure.Scanning electron microscope showed that the particles of the material are submicron with regular shape. The results of the charge-discharge curves showed that LiCu0.05Mn1.95O3.9F0.1 had better performance than undoped LiMn2O4 material.
