固相燃烧法合成LiNi0.10Znx Mn1.90-xO4（x≤0.15）正极材料及其电化学性能研究  

Synthesis of LiNi0.10Znx Mn1.90-xO4（x ≤ 0.15） cathode materials synthesized by solid state combustion and its electrochemical properties

作　　者：梁林巧 郭俊明[1,2] 杨灵艳 苏长伟[1,2] 段开娇[1,2] 向明武 白玮[1,2] LIANG Lin-qiao;GUO Jun-ming;YANG Ling-yan;SU Chang-wei;DUAN Kai-jiao;XIANG Ming-wu;BAI Wei(National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials,Yunnan Minzu University,Kunming 650500,China;Key Laboratory of Green−chemical Materials in University of Yunnan Province,Yunnan Minzu University,Kunming 650500,China)

机构地区：[1]云南民族大学生物基材料绿色制备技术国家地方联合工程研究中心,云南昆明650500 [2]云南民族大学云南省高校绿色化学材料重点实验室,云南昆明650500

出　　处：《云南大学学报（自然科学版）》2020年第1期119-126,共8页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金(51972282;U1602273)

摘　　要：用固相燃烧法合成LiNi0.10Znx Mn1.90-xO4(x≤0.15)正极材料.XRD与SEM表明,所有样品都属于LiMn2O4材料典型的尖晶石结构,无杂相生成,且均为分散性好、结晶性高的类球多面体,颗粒尺寸为100~200 nm.其中,LiNi0.10Zn0.02Mn1.88O4样品的粒径相对较小,为130 nm.电性能结果表明,LiNi0.10Zn0.02Mn1.88O4样品具有优异的循环稳定性和倍率性能,在1 C循环1000次后可维持76.3%的容量保持率,在较高倍率5 C、10 C和20 C,分别释放出98.0,91.7 mA·h·g^-1和88.8 mA·h·g^-1的比容量,表现出最优的电化学性能.LiNi0.10Znx Mn1.90-xO4(x≤0.15)cathode materials were synthesized by solid phase combustion method.XRD and SEM show that all samples belong to spinel structure typical of LiMn2O4 material,no impurity formation.And all of them are spheroidal polyhedrons with good dispersibility and high crystallinity,the particle size is 100-200 nm.Among them,the LiNi0.10Zn0.02Mn1.88O4 sample has a relatively small particle size of 130 nm.The results of electrical performance show that the LiNi0.10Zn0.02Mn1.88O4 sample has excellent cycle stability and rate performance,and it maintains a capacity retention rate of 76.3%after 1000 cycles at 1 C.At higher rates of 5 C,10 C and 20 C,higher specific capacities of 98.0,91.7 and 88.8 mA·h·g^-1 are released,respectively.It shows optimal electrochemical performance.

关 键 词：固相燃烧法 尖晶石LIMN2O4 Ni-Zn共掺杂 正极材料 电化学性能 

分 类 号：TM912[电气工程—电力电子与电力传动]