High-capacity, microporous Cu6Sn5-Sn anodes for li-ion batteries

Lynn Trahey, John T. Vaughey, Harold H Kung, Michael M. Thackeray

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Three-dimensional, microporous Cu6Sn5-Sn architectures were created by electrodeposition of copper and tin onto sintered copper foam substrates and evaluated as anodes for lithium-ion batteries. The electrodes were characterized before and after cycling by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectrometry. Before cycling, the electrochemically deposited films consisted of a combination of crystalline Cu6Sn5 and Sn, whereas after cycling, the films appeared amorphous to X-rays. When evaluated in coin cells against metallic lithium, the composite Cu6Sn5-Sn electrodes delivered a reversible capacity of 670 mAhg, which is significantly greater than the capacity achieved previously from powdered (ballmilled) and thin-film (sputtered) Cu6 Sn5 electrodes, typically 200-350 mAhg.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume156
Issue number5
DOIs
Publication statusPublished - 2009

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electric batteries
Anodes
anodes
cycles
Electrodes
electrodes
Copper
lithium
copper
ions
Tin
Amorphous films
Lithium
Electrodeposition
electrodeposition
foams
x ray spectroscopy
Foams
tin
x rays

ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

High-capacity, microporous Cu6Sn5-Sn anodes for li-ion batteries. / Trahey, Lynn; Vaughey, John T.; Kung, Harold H; Thackeray, Michael M.

In: Journal of the Electrochemical Society, Vol. 156, No. 5, 2009.

Research output: Contribution to journalArticle

Trahey, Lynn ; Vaughey, John T. ; Kung, Harold H ; Thackeray, Michael M. / High-capacity, microporous Cu6Sn5-Sn anodes for li-ion batteries. In: Journal of the Electrochemical Society. 2009 ; Vol. 156, No. 5.
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