Characterisation of lithium-ion battery anodes fabricated via in-situ Cu 6 Sn 5 growth on a copper current collector

Xin Fu Tan, Stuart D. McDonald, Qinfen Gu, Yuxiang Hu, Lianzhou Wang, Syo Matsumura, Tetsuro Nishimura, Kazuhiro Nogita

研究成果: ジャーナルへの寄稿記事

抄録

Li-ion batteries (LIBs) are favoured in many applications due to their high energy density and good cyclic performance. However, some safety concerns remain with respect to the risk of fires and explosions with LIBs. Carbon-based anode materials in LIBs operate close to the Li metal reduction potential, therefore Li dendrites can grow during voltage fluctuations, causing short circuits which may lead to fires. The Cu 6 Sn 5 anodes has the lithiation potential at about 0.4 V vs Li/Li + and therefore less prone to Li metal plating. A new manufacturing method involving direct in-situ formation of Cu 6 Sn 5 on a Cu current collector via melt-solid contact is proposed. This method combines the active material production and the anode fabrication into a single process. Lithiation and delithiation mechanisms of the anode produced are studied by in-situ synchrotron X-ray powder diffraction (XRPD) and ex-situ high voltage transmission electron microscope (HV-TEM). The in-situ XRPD study shows a reversible two-step reaction during cycling, and also reveals the differences in the reaction mechanisms at higher charge/discharge rates than those in published data.

元の言語英語
ページ(範囲)50-61
ページ数12
ジャーナルJournal of Power Sources
DOI
出版物ステータス出版済み - 3 1 2019

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accumulators
electric batteries
Copper
Anodes
anodes
lithium
copper
X ray powder diffraction
ions
Fires
Dendrites (metallography)
short circuits
Electric potential
dendrites
Synchrotrons
plating
diffraction
Plating
Short circuit currents
metals

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

これを引用

Characterisation of lithium-ion battery anodes fabricated via in-situ Cu 6 Sn 5 growth on a copper current collector . / Tan, Xin Fu; McDonald, Stuart D.; Gu, Qinfen; Hu, Yuxiang; Wang, Lianzhou; Matsumura, Syo; Nishimura, Tetsuro; Nogita, Kazuhiro.

:: Journal of Power Sources, 01.03.2019, p. 50-61.

研究成果: ジャーナルへの寄稿記事

Tan, Xin Fu ; McDonald, Stuart D. ; Gu, Qinfen ; Hu, Yuxiang ; Wang, Lianzhou ; Matsumura, Syo ; Nishimura, Tetsuro ; Nogita, Kazuhiro. / Characterisation of lithium-ion battery anodes fabricated via in-situ Cu 6 Sn 5 growth on a copper current collector :: Journal of Power Sources. 2019 ; pp. 50-61.
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