Electrochemical and spectroscopic evaluation of lithium intercalation in tailored polymethacrylonitrile carbons [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1997. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 6 pages : digital, PDF file
- Additional Creators:
- Sandia National Laboratories, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Disordered polymethacrylonitrile (PMAN) carbon monoliths have been studied as potential tailored electrodes for lithium ion batteries. A combination of electrochemical and surface spectroscopic probes have been used to investigate irreversible loss mechanisms. Voltammetric measurements show that Li intercalates readily into the carbon at potentials 1V positive of the reversible Li potential. The coulometric efficiency rises rapidly from 50% for the first potential cycle to greater than 85% for the third cycle, indicating that solvent decomposition is a self-limiting process. Surface film composition and thickness, as measured by x-ray photoelectron spectroscopy (XPS) and secondary ion mass spectrometry (SIMS), does not vary substantially when compared to more ordered carbon surfaces. Li⁺ profiles are particularly useful in discriminating between the bound states of Li at the surface of solution permeable PMAN carbons.
- Published through SciTech Connect., 12/01/1997., "sand--97-3143c", " conf-971201--", "DE98001703", "GC0401000", 1997 fall meeting of the Materials Research Society, Boston, MA (United States), 1-5 Dec 1997., and Guidotti, R.A.; Even, W.R.; Zavadil, K.R.
- Funding Information:
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