論文

査読有り
2020年8月1日

The Effects of Trace Sb and Zn Additions on Cu6Sn5 Lithium-Ion Battery Anodes

Journal of Nanoscience and Nanotechnology
  • Xin Fu Tan
  • ,
  • Adrian Xiao Bin Yong
  • ,
  • Qinfen Gu
  • ,
  • Wenhui Yang
  • ,
  • Kohei Aso
  • ,
  • Syo Matsumura
  • ,
  • Stuart D. McDonald
  • ,
  • Kazuhiro Nogita

20
8
開始ページ
5182
終了ページ
5191
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1166/jnn.2020.18538
出版者・発行元
American Scientific Publishers

Sn-based compounds are promising candidates for application as anodes in lithium-ion batteries (LIBs) due to the favourable storage capacity of Sn at 993 mAh g−1 compared to carbon at 372 mAh g−1. The use of Sn-based anodes also avoids some of the safety
concerns associated with carbon anodes. However, the large volume changes during lithiation and delithiation of pure Sn anodes often results in poor cyclic performance. Alloying Sn with Cu, an element inactive with respect to Li, buffers the expansion stresses and can improve cycling performance.
Cu6Sn5 is therefore a promising candidate anode material. In this work, the effects of Sb and Zn additions on the morphology, crystal structure, atomic arrangements and the electrochemical performance of the anodes were evaluated. Characterisation with synchrotron X-ray
powder diffraction and <italic>Cs</italic>-corrected transmission electron microscopy revealed the larger lattice parameters, higher symmetry crystal structures and well-ordered atomic arrangements in the Sb and Zn modified electrodes, which resulted in a more than 50% increase in cycling
capacity from 490 mAh g−1 to 760 mAh g−1.

リンク情報
DOI
https://doi.org/10.1166/jnn.2020.18538
URL
https://www.ingentaconnect.com/content/asp/jnn/2020/00000020/00000008/art00093

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