Prepared and electrochemical properties of Spinel LiNi 0.08Mn1.92O4 by a Liquid-phase flameless combustion method
LU Yao
BAI Hong-li
LIU Xiao-fang
WANG Rui
SU Chang-wei
GUO Jun-ming
Abstract：Spinel LiNi0.08Mn1.92O4cathode material were synthesized via a liquid-phase flameless combustion method.The effects of calcination temperature on structure,morphology and elec-trochemical performance of the powders were studied by X-ray diffraction,scanning electron mi-croscopy,CV,EIS and galvanostatic charge-discharge test.XRD spectra indicated that Ni-doped LiM n2O4is still a single spinel structure phase.SEM pattern indicate that Ni-doped improves the morphology and stabilizes the structure of the materials.The electrochemical test showed that the powder calcined at 700 ℃ deliver a relatively superior electrochemical performance with an in-itial discharge capacity of 105 mAh·g -1at 1 C and the minimum value of Rct is 135.6Ω,which indicates that the kinetic impedance was minimal during intercalation and deintercalation with electrochemical reaction.In the 0.5 C~10 C rate cycle,the capacity recovery rate of the sample at 700℃ was significantly higher than other sample,and it showed good cycle reversibility and magnification cycle stability.
Keywords：Ni-dopingLiquid-phase Flameless CombustionSpinelLiMn2O4Cathode materialLithium ion battery
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：6( 21-26 )