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Title: Rechargeable lithium battery cathodes. Nonaqueous synthesis, characterization, and electrochemical properties of LiCoO{sub 2}

Abstract

A nonaqueous coprecipitation process has been developed to prepare controlled stoichiometry lithium cobalt oxide precipitates. The process involved mixing a methanolic LiCo-(NO{sub 3}){sub 3} solution with a methanolic solution containing tetramethylammonium oxalate as a precipitating agent. The resulting oxalates were readily converted to phase-pure lithium cobalt oxide at 800 C under an oxygen atmosphere. The various starting solutions, oxalate precipitates, and the resulting oxides have been extensively characterized using a variety of techniques, including multinuclear NMR, TGA/DTA, EPR, and XRD analyses. Results indicate that the strong interaction between the metals (Li and Co) that occurred in solution was maintained during precipitation. The calcined precipitate revealed that the desired LiCoO{sub 2} phase was formed at 800 C under an O{sub 2} atmosphere. When electrochemically cycled, the material exhibited an initial capacity of {approximately}133 (mA h)/g with a fade of 0.02% in capacity per cycle.

Authors:
; ; ; ; ;  [1];  [2]
  1. Sandia National Labs., Albuquerque, NM (United States)
  2. Air Force Research Lab., Kirtland AFB, NM (United States)
Publication Date:
Research Org.:
Sandia National Laboratory
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
655353
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 10; Journal Issue: 8; Other Information: PBD: Aug 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE; SYNTHESIS; LITHIUM OXIDES; COBALT OXIDES; ELECTRIC BATTERIES; CATHODES; NITRATES; OXALATES; PRECIPITATION; ELECTROCHEMISTRY

Citation Formats

Boyle, T J, Ingersoll, D, Alam, T M, Tafoya, C J, Rodriguez, M A, Doughty, D H, and Vanheusden, K. Rechargeable lithium battery cathodes. Nonaqueous synthesis, characterization, and electrochemical properties of LiCoO{sub 2}. United States: N. p., 1998. Web. doi:10.1021/cm9802088.
Boyle, T J, Ingersoll, D, Alam, T M, Tafoya, C J, Rodriguez, M A, Doughty, D H, & Vanheusden, K. Rechargeable lithium battery cathodes. Nonaqueous synthesis, characterization, and electrochemical properties of LiCoO{sub 2}. United States. https://doi.org/10.1021/cm9802088
Boyle, T J, Ingersoll, D, Alam, T M, Tafoya, C J, Rodriguez, M A, Doughty, D H, and Vanheusden, K. Sat . "Rechargeable lithium battery cathodes. Nonaqueous synthesis, characterization, and electrochemical properties of LiCoO{sub 2}". United States. https://doi.org/10.1021/cm9802088.
@article{osti_655353,
title = {Rechargeable lithium battery cathodes. Nonaqueous synthesis, characterization, and electrochemical properties of LiCoO{sub 2}},
author = {Boyle, T J and Ingersoll, D and Alam, T M and Tafoya, C J and Rodriguez, M A and Doughty, D H and Vanheusden, K},
abstractNote = {A nonaqueous coprecipitation process has been developed to prepare controlled stoichiometry lithium cobalt oxide precipitates. The process involved mixing a methanolic LiCo-(NO{sub 3}){sub 3} solution with a methanolic solution containing tetramethylammonium oxalate as a precipitating agent. The resulting oxalates were readily converted to phase-pure lithium cobalt oxide at 800 C under an oxygen atmosphere. The various starting solutions, oxalate precipitates, and the resulting oxides have been extensively characterized using a variety of techniques, including multinuclear NMR, TGA/DTA, EPR, and XRD analyses. Results indicate that the strong interaction between the metals (Li and Co) that occurred in solution was maintained during precipitation. The calcined precipitate revealed that the desired LiCoO{sub 2} phase was formed at 800 C under an O{sub 2} atmosphere. When electrochemically cycled, the material exhibited an initial capacity of {approximately}133 (mA h)/g with a fade of 0.02% in capacity per cycle.},
doi = {10.1021/cm9802088},
url = {https://www.osti.gov/biblio/655353}, journal = {Chemistry of Materials},
number = 8,
volume = 10,
place = {United States},
year = {1998},
month = {8}
}