锂离子电池负极材料M_2P_2S_6(M=Ni,Mn)的合成及电化学性能研究  

Synthesis and electrochemical properties of M_2P_2S_6(M=Ni,Mn)as anode materials for lithium-ion battery applications

作　　者：徐杉[1] 刘康[1] 刘小红[1] 刘恋[1] 张晴[1] 王石泉[1] 冯传启[1] 

机构地区：[1]湖北大学化学化工学院,湖北武汉430062

出　　处：《湖北大学学报（自然科学版）》2015年第3期266-270,281,共6页Journal of Hubei University：Natural Science

基　　金：湖北省科技厅国际科技合作基金(2011BFA002);浙江工业大学绿色化学合成技术国家重点实验室培育基地开放基金(GCPKF2014013);2014湖北省大学生创新创业训练计划项目(201410512051)资助

摘　　要：通过室温固相法合成M2P2S6（M=Mn,Ni）层状结构材料,经XRD,SEM,EDS,IR和TG进行表征.结果表明,Mn2P2S6由粒径为40~50 nm的纳米球堆积而成,Ni2P2S6由不同大小粒子组成块状结构.将M2P2S6（M=Mn,Ni）作为锂离子电池负极材料进行电化学测试表明,M2P2S6（M=Mn,Ni）的首圈放电比容量分别高达800 m Ah/g和911 m Ah/g,说明M2P2S6化合物可能是一个潜在的锂离子电池负极材料。M2P2S6 （M=Mn, Ni）with a layered structure was synthesized by solid state method at room temperature. The products were characterized by XRD, SEM, EDS, IR and TG. The Mn2P2S6 powders are accumulated with a large amount of nanospheres with diameters of 40m50 nm and the Ni2P2S6 product is blocky structure made of different sizes particles. M2P2S6 （M=Mn, Ni） were used as active anode materials for lithiumion battery and their electrochemical properties were tested by constant current charge-discharge cycling. The results show that the initial discharge capacity of M2P2S6 （M=Mn, Ni） were 800 mAh/g and 911 mAh/g respectively, which means M2P2S6 compounds can be potential anode materials of lithium-ion battery.

关 键 词：锂离子电池 M2P2S6 室温固相法 电化学性质 

分 类 号：TQ152[化学工程—电化学工业]