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author:

Wang, Lijuan (Wang, Lijuan.) [1] | Zhou, Xuechou (Zhou, Xuechou.) [2] | Guo, Yonglang (Guo, Yonglang.) [3]

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EI

Abstract:

The carbon-coated monoclinic Li3V2(PO4)3 (LVP) cathode materials can be synthesized by a low temperature solid-state reaction route. The influences of different heat treatments on the LVP have been investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical methods. In the range of 3.0-4.3 V, both LVP/C electrodes present good rate capability and excellent cyclic performance. It is found that the sample (LVP1/C) prepared by the two-step heat treatment with pre-sintering at 350 °C delivers the initial discharge capacity of 99.8 mAh g-1 at 10 C charge-discharge rate and still retains 95.8 mAh g-1 after 300 cycles. For the sample (LVP2/C) synthesized by the one-step heat treatment, 95.9 and 90.0 mAh g-1 are obtained in the 1st and 300th cycles at 10 C rate, respectively. Our results based on the XRD patterns and the SEM images suggest that the good rate capability and cyclic performance may be owing to the pure phases, small particles, large specific surface areas and residual carbon. In the range of 3.0-4.8 V, compared with the LVP2/C, the LVP1/C also exhibits better performance. © 2009 Elsevier B.V. All rights reserved.

Keyword:

Carbon Cathodes Coated materials Electric discharges Lithium compounds Lithium-ion batteries Scanning electron microscopy Sintering Solid-State Batteries Solid state reactions Temperature Vanadium compounds X ray diffraction

Community:

  • [ 1 ] [Wang, Lijuan]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, 350108, China
  • [ 2 ] [Zhou, Xuechou]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, 350108, China
  • [ 3 ] [Guo, Yonglang]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, 350108, China

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Source :

Journal of Power Sources

ISSN: 0378-7753

Year: 2010

Issue: 9

Volume: 195

Page: 2844-2850

4 . 2 9

JCR@2010

8 . 1 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:1

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: 1

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