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典型文献
Optimization of Al3+ Doping on the Microstructure and Electrochemical Performance of Spinel LiMn2O4
文献摘要:
A series of spinel LiAlxMn2-xO4 (x ≤ 0.1) cathode materials was synthesized by controlled crystallization and solid state route with micro-spherical Mn3O4 as the precursor.X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to analyze the crystal structure of the synthetic material and the microscopic morphology of the particles.It was found that A13+ doping did not change the spinel structure of the synthesized materials,and the particles had better crystallinity.In the charge and discharge test of the synthesized materials,we found that Al3+ doping would slightly reduce the discharge capacity,but it could effectively improve the cyclic stability of the material.The initial capacity of LiAl0.04Mn1.96O4 is 121.6 mAh/g.After 100 cycles at a rate of 1 C (1 C =148 mA/g),the capacity can still reach 112.9 mAh/g,and the capacity retention rate is 96.4%.Electrochemical impedance spectroscopy (EIS) suggests that Al3+ doping can effectively enhance the diffusion capacity of lithium ions in the material.
文献关键词:
作者姓名:
XIE Tao-Xiong;REN Peng-Wen;YU Lin-Yu;LI Wei;DENG Hao-Jie;JIANG Jian-Bing
作者机构:
College of Packaging and Material Engineering,Hunan University of Technology,Zhuzhou 412007,China
文献出处:
引用格式:
[1]XIE Tao-Xiong;REN Peng-Wen;YU Lin-Yu;LI Wei;DENG Hao-Jie;JIANG Jian-Bing-.Optimization of Al3+ Doping on the Microstructure and Electrochemical Performance of Spinel LiMn2O4)[J].结构化学,2022(02):168-175
A类:
LiAlxMn2,xO4,LiAl0,04Mn1,96O4
B类:
Optimization,Al3+,Doping,Microstructure,Electrochemical,Performance,Spinel,LiMn2O4,series,spinel,cathode,materials,was,synthesized,by,controlled,crystallization,solid,state,route,spherical,Mn3O4,precursor,ray,diffraction,scanning,electron,microscopy,were,used,analyze,synthetic,microscopic,morphology,particles,It,found,that,A13+,doping,did,not,change,had,better,crystallinity,In,discharge,test,would,slightly,reduce,capacity,but,could,effectively,improve,cyclic,stability,initial,mAh,After,cycles,rate,still,reach,retention,impedance,spectroscopy,EIS,suggests,enhance,diffusion,lithium,ions
AB值:
0.536984
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