锂离子电池正极材料锰酸锂掺杂改性研究

Abstract

Abstract: High purity LiMn₂O₄ and solid solution LiPr_xMn_2-xO₄（x=0.02，0.04，0.06，0.08，0.10）were synthesized by solid-state reaction.Morphologies，structures，and electrochemical properties of the samples were investigated by SEM，XRD，and constant current charge-discharge analysis.Results showed when x=0.06，solid solution LiPr_0.06Mn_1.94O₄ samples exhibited good spinel phase with even crystal size；solid solution LiPr0.06 Mn_1.94O₄ had good high temperature （55 ℃） cycling performance and its discharge capacity retained 82.5% after running for 50 cycles at 55 ℃ and 1C charge and discharge rate.

Key words: LiMn₂O₄, ion doping, lithium ion batteries, cathode materials

CLC Number:

TQ131.11

ZHANG Chun-Li, YE Xue-Hai, ZHANG Xiao-Bo, FU Chun-Ming, YU Xiao-Wei, XIAO Cai-Ying. Modification of cathode material for lithium ion batteries by doping lithium manganate[J]. INORGANICCHEMICALSINDUSTRY, 2012, 44(6): 61-.

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Modification of cathode material for lithium ion batteries by doping lithium manganate

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