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作者:

Yu Chunyang (Yu Chunyang.) | Wang Zhongli (Wang Zhongli.) | Chen Yu (Chen Yu.) | Xia Dingguo (Xia Dingguo.) (学者:夏定国) | Chu Wangsheng (Chu Wangsheng.) | Wu Ziyu (Wu Ziyu.)

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EI Scopus SCIE CSCD

摘要:

A mesoporous LiFe0.99Mo0.01PO4/C composite was synthesized by the sol-gel method using (NH4)(2)MoO4 as a doping starting material. The formation of conductive carbon, metal doping and mesopores was achieved simultaneously in the prepared material. The characterizations of crystal structures and microstructures were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), extended X-ray-absorption fine-structure (EXAFS) and X-ray-absorption near-structure spectroscopy (XANES), while the surface area was determined using N-2 adsorption techniques. Cyclic voltammetry (CV) and charge-discharge cycling performance were used to characterize its electrochemical properties. The sample possessed uniformly distributed mesopores with an average pore size of 4 nm, and the specific surface area was about 69.368 m(2)/g. The results show that the reversible capacity of mesoporous LiFe0.99Mo0.01PO4/C is about 160 mAh/g at 0.1C, 135 mAh/g at 1C and 90 mAh/g at 5C, respectively. The capacity fading is neglectable.

关键词:

cathode material electrochemical properties lithium ion battery mesoporous composite

作者机构:

  • [ 1 ] [Yu Chunyang]Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China
  • [ 2 ] [Yu Chunyang]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100022, Peoples R China
  • [ 3 ] [Wang Zhongli]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100022, Peoples R China
  • [ 4 ] [Chen Yu]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100022, Peoples R China
  • [ 5 ] [Xia Dingguo]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100022, Peoples R China
  • [ 6 ] [Chu Wangsheng]Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China
  • [ 7 ] [Wu Ziyu]Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China

通讯作者信息:

  • [Yu Chunyang]Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China

电子邮件地址:

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来源 :

RARE METALS

ISSN: 1001-0521

年份: 2009

期: 4

卷: 28

页码: 317-321

8 . 8 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

JCR分区:2

中科院分区:1

被引次数:

WoS核心集被引频次: 3

SCOPUS被引频次: 4

ESI高被引论文在榜: 0 展开所有

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