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Title: Investigations of Si Thin Films as Anode of Lithium-Ion Batteries

Journal Article · · ACS Applied Materials and Interfaces
ORCiD logo [1];  [2]; ORCiD logo [3];  [4];  [3]; ORCiD logo [3];  [3]; ORCiD logo [3]
  1. Western Michigan Univ., Kalamazoo MI (United States). Dept. of Chemical and Paper Engineering
  2. Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Science and Engineering Division
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials

Amorphous silicon thin films having various thicknesses were investigated as a negative electrode material for lithium-ion batteries. Electrochemical characterization of the 20 nm thick thin silicon film revealed a very low first cycle Coulombic efficiency, which can be attributed to the silicon oxide layer formed on both the surface of the as-deposited Si thin film and the interface between the Si and the substrate. Among the investigated films, the 100 nm Si thin film demonstrated the best performance in terms of first cycle efficiency and cycle life. Observations from scanning electron microscopy demonstrated that the generation of cracks was inevitable in the cycled Si thin films, even as the thickness of the film was as little as 20 nm, which was not predicted by previous modeling work. However, the cycling performance of the 20 and 100 nm silicon thin films was not detrimentally affected by these cracks. Lastly, the poor capacity retention of the 1 mu m silicon thin film was attributed to the delamination.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1426216
Journal Information:
ACS Applied Materials and Interfaces, Vol. 10, Issue 4; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

References (25)

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Method to deduce the critical size for interfacial delamination of patterned electrode structures and application to lithiation of thin-film silicon islands journal May 2012
Crack Pattern Formation in Thin Film Lithium-Ion Battery Electrodes journal January 2011
In Situ XRD and Electrochemical Study of the Reaction of Lithium with Amorphous Silicon journal January 2004
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Lithiation-induced tensile stress and surface cracking in silicon thin film anode for rechargeable lithium battery journal November 2012

Cited By (3)

Computational investigation of a promising Si–Cu anode material journal January 2019
Morphological and structural evolution of Si-Cu nanocomposites by an instantaneous vapor-liquid-solid growth and the electrochemical lithiation/delithiation performances journal January 2019
Computer Test of a New Silicene Anode for Lithium‐Ion Batteries journal January 2019

Figures / Tables (6)


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