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author:

张玉荣 (张玉荣.) [1] | 王文继 (王文继.) [2]

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CQVIP PKU CSCD

Abstract:

采用高温固相反应合成了Li2+2xTi1-xCux(NbO4)2,XRD分析表明:当x≤0.8时均能得到与LiFePO4相同的橄榄石结构.电导率测定结果表明:x=0.6的合成物室温电导率最高,为1.26×10-5S/cm,且当x≥0.6时合成物都表现出离子电导的特征.以x=0.6的合成物做成的待测电极与锂片组成电池,在1mol/L的LiPF6/EC+DMC(1∶1)电解液中在0.5~4.6V间以0.10mA/cm2的电流密度进行电池循环测试的结果表明,该电池的首次放电比容量高达805.8mAh/g,放电平台在对Li+/Li电对为2V附近,但其可逆性及循环性均有待改善.

Keyword:

Li2+2xTi1-xCux(NbO4)2 橄榄石结构 正极材料 电导率 锂离子电池 高温固相反应

Community:

  • [ 1 ] 福州大学化学系,福州350002

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Source :

无机材料学报

ISSN: 1000-324X

Year: 2004

Issue: 2

Volume: 19

Page: 349-353

0 . 2 2 3

JCR@2004

1 . 7 0 0

JCR@2023

JCR Journal Grade:4

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count: -1

30 Days PV: 3

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