Characterization of the passivation layer on disordered carbons in lithium-ion cells

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Intercalation anodes of graphite or disordered carbon in rechargeable Li-ion batteries (based on aprotic organic solvents) develop a passivating film during the first intercalation of Li{sup +}. The formation of this film reduces the cycling efficiency and results in excessive consumption of Li{sup +}. The exact nature of this film is not well defined, although there are many similarities in properties to the films that form on Li anodes under similar cycling conditions. In this study we report on characterization studies of films formed during galvanostatic cycling of disordered carbons derived from polymethylacryolintrile (PMAN) in a 1M LiPF{sub 6} solution ... continued below

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8 p.

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Guidotti, R. & Johnson, B. December 1, 1995.

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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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Intercalation anodes of graphite or disordered carbon in rechargeable Li-ion batteries (based on aprotic organic solvents) develop a passivating film during the first intercalation of Li{sup +}. The formation of this film reduces the cycling efficiency and results in excessive consumption of Li{sup +}. The exact nature of this film is not well defined, although there are many similarities in properties to the films that form on Li anodes under similar cycling conditions. In this study we report on characterization studies of films formed during galvanostatic cycling of disordered carbons derived from polymethylacryolintrile (PMAN) in a 1M LiPF{sub 6} solution in ethylene carbonateldimethyl carbonate solution (1:1 by vol.). Complementary tests were also conducted with glass carbon, where intercalation cannot occur. Complex-impedance spectroscopy was the primary measurement technique, supplemented by cyclic voltammetry.

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8 p.

Notes

OSTI as DE96002539

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  • 11. annual battery conference on applications and advances, Long Beach, CA (United States), 9-12 Jan 1996

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  • Other: DE96002539
  • Report No.: SAND--95-2582C
  • Report No.: CONF-960112--1
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 135147
  • Archival Resource Key: ark:/67531/metadc623795

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Office of Scientific & Technical Information Technical Reports

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  • December 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • April 13, 2016, 1:04 p.m.

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Guidotti, R. & Johnson, B. Characterization of the passivation layer on disordered carbons in lithium-ion cells, article, December 1, 1995; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc623795/: accessed November 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.