Electrochemical and spectroscopic evaluation of lithium intercalation in tailored polymethacrylonitrile carbons

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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 ... continued below

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6 p.

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Zavadil, K.R.; Guidotti, R.A. & Even, W.R. December 1, 1997.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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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{sup +} profiles are particularly useful in discriminating between the bound states of Li at the surface of solution permeable PMAN carbons.

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6 p.

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OSTI as DE98001703

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  • 1997 fall meeting of the Materials Research Society, Boston, MA (United States), 1-5 Dec 1997

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  • Other: DE98001703
  • Report No.: SAND--97-3143C
  • Report No.: CONF-971201--
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 563178
  • Archival Resource Key: ark:/67531/metadc693739

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  • December 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • May 20, 2016, 3:17 p.m.

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Zavadil, K.R.; Guidotti, R.A. & Even, W.R. Electrochemical and spectroscopic evaluation of lithium intercalation in tailored polymethacrylonitrile carbons, article, December 1, 1997; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc693739/: accessed April 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.