Study on the synthesis of LiNixMn2―xO4(x≤0.10)and electrochemical properties via a liquid flameless combustion method
YU Yue
BAI Hong-li
LIU Xiao-fang
SU Chang-wei
WANG Rui
GUO Jun-ming
Abstract：A series of Ni-doped LiNixMn2―xO4(0≤x≤0.10)lithium ion battery cathode materials were quickly synthesized via one-step liquid flameless combustion method.The structure,microstructure and electrochemical properties of the synthesized samples were characterized by XRD,SEM and electrochem-ical tests.The results showed that all the synthesized LiNixMn2-xO4cathode materials were spinel LiMn2O4.LiNi0.08Mn1.92O4had the maximum capacity at 1 C of 79.3 mAh·g―1after 500 cycles.CV test showed that LiNi0.08Mn1.92O4had the minimum redox potential difference of 0.18V after 500 cy-cles,which indicated that the electrochemical polarization was weak and it had good electrochemi-cal reversibility.EIS test showed that LiNi0.08Mn1.92O4had the minimal activation energy(Ea)of 23.81 KJ·mol―1among all samples.So doping appropriate amount of Ni can effectively improve the cycle reversibility and electrochemical performance of lithium ion batteries.
Keywords：Liquid flameless combustion methodNi dopingCathode materialsLiMn2O4Lithi-um ion batteries
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 62-69 )