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author:

何丽琼 (何丽琼.) [1] | 刘慧勇 (刘慧勇.) [2] (Scholars:刘慧勇)

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CQVIP PKU CSCD

Abstract:

将层状的LiNi1/3Co1/3Mn1/3O2锂离子电池正极材料与尖晶石型的LiMn2O4按质量比为2:98混合烧结,采用X射线衍射(XRD)、循环伏安法(CV)、交流阻抗(EIS)以及充放电测试研究LiMn2O4对LiNi1/3Co1/3Mn1/3O2电化学性能的影响.研究表明混合LiMn2O4有利于提高LiNi1/3Co1/3Mn1/3O2正极材料的首次库仑效率、循环性能和倍率性能,在3.0~4.3 V以1C循环,首次放电比容量和库仑效率分别为150.3 mAh/g和85.5%,循环50次后容量保持率为88.9%;在5C下充放电仍保持136.2 mAh/g.循环伏安与交流阻抗测试表明混合2%(质量分数)LiMn2O4可以提升材料的可逆性和放电容量,降低电荷转移电阻.

Keyword:

LiMn2O4 LiNi1/3Co1/3Mn1/3O2 电化学性能 锂离子电池

Community:

  • [ 1 ] [何丽琼]福州大学
  • [ 2 ] [刘慧勇]福州大学

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Source :

电源技术

ISSN: 1002-087X

CN: 12-1126/TM

Year: 2015

Issue: 3

Volume: 39

Page: 461-463

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count: -1

Chinese Cited Count:

30 Days PV: 8

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