In Situ XRD of Thin Film Tin Electrodes for Lithium Ion Batteries
- ORNL
Thin film electrodes for lithium ion batteries (LIB) poses several attractive advantages over traditional composite electrodes including size and shape constraints, operating temperature range, and volumetric energy density. Tin is an attractive candidate for LIB anode applications due to its exceptional specific capacity, cascading voltage profile, safety, wide availability, and low cost. Tin thin film electrodes were sputtered onto the current collector of a recently developed in situ X-ray diffraction (XRD) and were monitored continuously by XRD while cycling. A phase transformation from white tin, to Li2Sn5, to -LiSn, to Li22Sn5 was observed during lithiation with the same phases detected in reverse order during delithiation. Preferred orientation and crystallite size information for these phases was extracted from the XRD data in order to develop a clearer picture of how lithium enters and exits thin film tin electrodes.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Temperature Materials Lab. (HTML)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 1185318
- Journal Information:
- Journal of the Electrochemical Society, Vol. 159, Issue 3; ISSN 0013--4651
- Country of Publication:
- United States
- Language:
- English
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