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author:

Fang, G.-H. (Fang, G.-H..) [1] | Wu, M.-X. (Wu, M.-X..) [2] | Wang, W.-G. (Wang, W.-G..) [3] | Li, R.-F. (Li, R.-F..) [4] | Pan, Y. (Pan, Y..) [5]

Indexed by:

Scopus CSCD

Abstract:

Properties of two LiFePO4/C composites with low carbon content synthesized from precursors dried by spray drying and blast drying are investigated by scanning electron microscopy, X-ray diffraction, Raman spectroscopy and electrochemical measurements. The two samples have a different morphology and particle size, while the structure of LiFePO4 is unaffected. The LiFePO4/C composite prepared from the precursor dried by blast drying has a much lower surface resistance and a much better rate capability because the deposited carbon is more graphite-like and more conductive. The cycling performance is also much better for the LiFePO 4/C composite prepared from the precursor dried by blast drying because only a slight impedance growth is involved upon cycling. These results suggest that the precursor drying process has a significant impact on the properties of LiFePO4/C composite, and its effect is highly dependent on the carbon content.

Keyword:

Cathode; Drying; LiFePO4; Lithium ion batteries; Precursor

Community:

  • [ 1 ] [Fang, G.-H.]State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
  • [ 2 ] [Fang, G.-H.]Department of Chemistry, Fuzhou University, Fuzhou 350002, China
  • [ 3 ] [Wu, M.-X.]State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
  • [ 4 ] [Wang, W.-G.]State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
  • [ 5 ] [Li, R.-F.]State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
  • [ 6 ] [Pan, Y.]State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China

Reprint 's Address:

  • [Wu, M.-X.]State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China

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Source :

Jiegou Huaxue

ISSN: 0254-5861

CN: 35-1112/TQ

Year: 2013

Issue: 2

Volume: 32

Page: 273-281

0 . 4 7 7

JCR@2013

5 . 9 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

JCR Journal Grade:4

CAS 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:

30 Days PV: 0

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