Orthorhombic LiMnO2 products, synthesised by the reaction of gamma-MnO2 and LiOH in argon at 600-620 degrees C using carbon as a reducing agent, have been evaluated as electrode materials in lithium cells. Products that contained a minor proportion of a lithiated spinel phase showed greater electrochemical activity than pure LiMnO2. On delithiation, LiMnO2 transforms irreversibly to a spinel-type structure. A mechanism for the orthorhombic LixMnO2-spinel phase transformation is proposed.
Reference:
Gummow, RJ, Liles, DC and Thackeray, MM. 1993. Lithium extraction from orthorhombic lithium manganese oxide and the phase-transformation to spinel. Materials Research Bulletin, vol. 28(12), pp 1249-1256
Gummow, R., Liles, D., & Thackeray, M. (1993). Lithium extraction from orthorhombic lithium manganese oxide and the phase-transformation to spinel. http://hdl.handle.net/10204/2109
Gummow, RJ, DC Liles, and MM Thackeray "Lithium extraction from orthorhombic lithium manganese oxide and the phase-transformation to spinel." (1993) http://hdl.handle.net/10204/2109
Gummow R, Liles D, Thackeray M. Lithium extraction from orthorhombic lithium manganese oxide and the phase-transformation to spinel. 1993; http://hdl.handle.net/10204/2109.
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