当代化工
噹代化工
당대화공
Contemporary Chemical Industry
2015年
10期
2286-2288,2293
,共4页
磷酸锰锂%锶掺杂%正极材料%锂离子电池
燐痠錳鋰%鍶摻雜%正極材料%鋰離子電池
린산맹리%송참잡%정겁재료%리리자전지
Lithium manganese phosphate%Strontium doping%Cathode material%Lithium-ion battery
采用溶剂热法合成了 Sr2+掺杂的 LiMn1-xSrxPO4/C（x =0,0.01,0.03,0.05)），并利用 XRD、SEM、EIS和电化学性能测试技术对磷酸锰锂的形貌、微观结构及电化学性能进行了表征。正极材料 LiMn0.99Sr0.01PO4/C （LSr1）表现出较高的放电容量和较好的循环性能。在0.1C 的放电倍率下循环50周之后，LSr1的容量为119.2 mA·h·g-1，循环保持率分别为95.5%。
採用溶劑熱法閤成瞭 Sr2+摻雜的 LiMn1-xSrxPO4/C（x =0,0.01,0.03,0.05)），併利用 XRD、SEM、EIS和電化學性能測試技術對燐痠錳鋰的形貌、微觀結構及電化學性能進行瞭錶徵。正極材料 LiMn0.99Sr0.01PO4/C （LSr1）錶現齣較高的放電容量和較好的循環性能。在0.1C 的放電倍率下循環50週之後，LSr1的容量為119.2 mA·h·g-1，循環保持率分彆為95.5%。
채용용제열법합성료 Sr2+참잡적 LiMn1-xSrxPO4/C（x =0,0.01,0.03,0.05)），병이용 XRD、SEM、EIS화전화학성능측시기술대린산맹리적형모、미관결구급전화학성능진행료표정。정겁재료 LiMn0.99Sr0.01PO4/C （LSr1）표현출교고적방전용량화교호적순배성능。재0.1C 적방전배솔하순배50주지후，LSr1적용량위119.2 mA·h·g-1，순배보지솔분별위95.5%。
LiMn1-xSrxPO4/C (x = 0, 0.01, 0.03, 0.05) were synthesized by the solvothermal synthesis. The effect of Sr doping was studied by the X-ray diffraction pattern, scanning electronic microscopy, electrochemical impedance spectroscopy and charge/discharge measurement techniques. The LiMn0.99Sr0.01PO4/C (LSr1) shows the high discharge capacity and the best cycling stability among all the samples. It can deliver the highest discharge capacity of 119.2 mA·h·g-1 with 95.5% capacity retention after 50 cycles at 0.1 C.
