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Synthesis and properties of Li 2 SnO 3 /polyaniline nanocomposites as negative electrode material for lithium-ion batteries

  • Qiufen Wang
  • , Ying Huang
  • , Juan Miao
  • , Yang Zhao
  • , Yan Wang
  • Northwestern Polytechnical University Xian
  • Henan Polytechnic University

科研成果: 期刊稿件文章同行评审

50 引用 (Scopus)

摘要

The nanocomposites Li 2 SnO 3 /polyaniline (Li 2 SnO 3 /PANI) have been synthesized by a micro emulsion polymerization method. The structure, morphology and electrochemical properties of the as-prepared materials are characterized by XRD, FTIR, Raman, XPS, TGA, TEM and electrochemical measurements. Results show that Li 2 SnO 3 /PANI nanocomposites are composed of uniform and blocky nano-sized particles (40-50 nm) with clear lattice fringes. Electrochemical measurement suggests that Li 2 SnO 3 /PANI exhibits better cycling properties and lower initial irreversible capacities than Li 2 SnO 3 as negative electrodes materials for lithium-ion batteries. At a current density of 60 mA g -1 in the voltage about 0.05-2.0 V, the initial irreversible capacity of Li 2 SnO 3 /PANI is 563 mAh g -1 while it is 687.5 mAh g -1 to Li 2 SnO 3 . The capacity retained of Li 2 SnO 3 /PANI (569.2 mAh g -1 ) is higher than that of Li 2 SnO 3 (510.2 mAh g -1 ) after 50 cycles. The PANI in the Li 2 SnO 3 /PANI nanocomposites can buffer the released stress caused by the drastic volume variation during the alloying/de-alloying process of Li-Sn.

源语言英语
页(从-至)9896-9901
页数6
期刊Applied Surface Science
258
24
DOI
出版状态已出版 - 1 10月 2012

联合国可持续发展目标

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  1. 可持续发展目标 7 - 经济适用的清洁能源
    可持续发展目标 7 经济适用的清洁能源

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