Electrochemical impedance spectroscopy studies of lithium diffusion in doped manganese oxide

Title: Electrochemical impedance spectroscopy studies of lithium diffusion in doped manganese oxide

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Abstract

Cathode performance is critical to lithium ion rechargeable battery performance; effects of doping lithium manganese oxide cathode materials on cathode performance are being investigated. In this paper, Li diffusion in Al-doped LiMn{sub 2}O{sub 4} was studied and found to be controlled by the quantity of Al dopant. Electrochemical cycling was conducted at 0.5mA/cm{sub 2}; electrochemical impedance spectra were taken at open circuit potential, with impedance being measured at 65 kHz-0.01 Hz. As the Al dopant level was increased, the Li diffusion rate decreased; this was attributed to the decreased lattice parameter of the doped oxide.

Authors:: Johnson, B J; Doughty, D H; Voigt, J A; Boyle, T J

Publication Date:: 1996-06-01

Research Org.:: Sandia National Labs., Albuquerque, NM (United States)

Sponsoring Org.:: USDOE, Washington, DC (United States)

OSTI Identifier:: 238345

Report Number(s):: SAND-96-1145C; CONF-9606212-1
ON: DE96010553

DOE Contract Number:: AC04-94AL85000

Resource Type:: Conference

Resource Relation:: Conference: 8. international meeting on lithium batteries, Nagoya (Japan), 16-21 Jun 1996; Other Information: PBD: [1996]

Country of Publication:: United States

Language:: English

Subject:: 25 ENERGY STORAGE; 36 MATERIALS SCIENCE; CATHODES; MATERIALS; ELECTRIC BATTERIES; LITHIUM; DIFFUSION; MANGANESE OXIDES; LITHIUM COMPOUNDS; MANGANATES; DOPED MATERIALS; ALUMINIUM ADDITIONS

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                    Johnson, B J, Doughty, D H, Voigt, J A, and Boyle, T J. Electrochemical impedance spectroscopy studies of lithium diffusion in doped manganese oxide.  United States: N. p., 1996. 
        Web.

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                    Johnson, B J, Doughty, D H, Voigt, J A, & Boyle, T J. Electrochemical impedance spectroscopy studies of lithium diffusion in doped manganese oxide.  United States.

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                    Johnson, B J, Doughty, D H, Voigt, J A, and Boyle, T J. Sat .  
        "Electrochemical impedance spectroscopy studies of lithium diffusion in doped manganese oxide".  United States.  https://www.osti.gov/servlets/purl/238345.

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@article{osti_238345,

  title        = {Electrochemical impedance spectroscopy studies of lithium diffusion in doped manganese oxide},

  author       = {Johnson, B J and Doughty, D H and Voigt, J A and Boyle, T J},

  abstractNote = {Cathode performance is critical to lithium ion rechargeable battery performance; effects of doping lithium manganese oxide cathode materials on cathode performance are being investigated. In this paper, Li diffusion in Al-doped LiMn{sub 2}O{sub 4} was studied and found to be controlled by the quantity of Al dopant. Electrochemical cycling was conducted at 0.5mA/cm{sub 2}; electrochemical impedance spectra were taken at open circuit potential, with impedance being measured at 65 kHz-0.01 Hz. As the Al dopant level was increased, the Li diffusion rate decreased; this was attributed to the decreased lattice parameter of the doped oxide.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/238345},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1996},

  month        = {6}

}

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