当代化工
噹代化工
당대화공
CONTEMPORARY CHEMICAL INDUSTRY
2014年
12期
2526-2528
,共3页
锂离子电池%正极材料%LiNi,Co,MnO2%改性
鋰離子電池%正極材料%LiNi,Co,MnO2%改性
리리자전지%정겁재료%LiNi,Co,MnO2%개성
Lithium ion battery%Cathode material%Li[Ni,Co,Mn]O2%Modification
结构式为Li[Ni,Co,Mn]O2的层状镍钴锰三元材料由于具有容量高、结构稳定、安全性好、成本低且对环境没有污染等优点而受到动力电池市场的广泛关注。但是它也存在高温大倍率放电性能及高充电截止电压条件下的循环稳定性能差等缺点。介绍了三种三元材料的合成改性工艺和两种基体改性方法,分别包括离子交换法、超声辅助合成法、熔盐法和表面包覆、掺杂等。并对其未来发展进行了展望。
結構式為Li[Ni,Co,Mn]O2的層狀鎳鈷錳三元材料由于具有容量高、結構穩定、安全性好、成本低且對環境沒有汙染等優點而受到動力電池市場的廣汎關註。但是它也存在高溫大倍率放電性能及高充電截止電壓條件下的循環穩定性能差等缺點。介紹瞭三種三元材料的閤成改性工藝和兩種基體改性方法,分彆包括離子交換法、超聲輔助閤成法、鎔鹽法和錶麵包覆、摻雜等。併對其未來髮展進行瞭展望。
결구식위Li[Ni,Co,Mn]O2적층상얼고맹삼원재료유우구유용량고、결구은정、안전성호、성본저차대배경몰유오염등우점이수도동력전지시장적엄범관주。단시타야존재고온대배솔방전성능급고충전절지전압조건하적순배은정성능차등결점。개소료삼충삼원재료적합성개성공예화량충기체개성방법,분별포괄리자교환법、초성보조합성법、용염법화표면포복、참잡등。병대기미래발전진행료전망。
Because of its high specific capacity, relatively stable structure, good safety performance, low cost and no environment pollution, the layer-type cathode material Li[Ni,Co,Mn]O2 has been paid much attention in the field of power battery. However, there still exist some defects on it, such as poor cycling stability under high cut-off voltage, and poor discharge capacity under high temperature when cycling at high rate. In this paper, three kinds of new synthesis methods and two kinds of ways for modification were mainly introduced, such as ion exchange method, ultrasound assisted synthesis method, molten salt method, surface coating and doping. The developing trend of Li[Ni, Co,Mn]O2 was also prospected.