Spinel versus layered structures for lithium cobalt oxide synthesized at 400 C

Journal Article · Mon Mar 01 04:00:00 EST 1993 · Materials Research Bulletin; (United States)

DOI:https://doi.org/10.1016/0025-5408(93)90157-9· OSTI ID:6478827

Gummow, R J; Liles, D C; Thackerary, M M ^[1]

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1. Div. of Materials Science and Technology, Pretoria (South Africa)

Rietveld refinements of X-ray data of LiCoO[sub 2] prepared at 400 C and a chemically-delithiated product Li[sub 0.5]CoO[sub 2] using space group symmetries R[bar 3]m and Fd3m are reported. Refinements in both R[bar 3]m (layered-type structure) and Fd3m (spinel-type structure) give comparable fits to the data. This structural anomaly is discussed in terms of the refinements and electrochemical data obtained when lithium is extracted from LiCoO[sub 2] in non-aqueous cells at room temperature. A spinel-related model for Li[sub x]CoO[sub 2] (0.5 [le] x [le] 1) is preferred.

• OSTI ID: 6478827
• Journal Information: Materials Research Bulletin; (United States), Journal Name: Materials Research Bulletin; (United States) Vol. 28:3; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ALKALI METAL COMPOUNDS
CHALCOGENIDES
COBALT COMPOUNDS
COBALT OXIDES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
LITHIUM COMPOUNDS
LITHIUM OXIDES
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
SCATTERING
SPINELS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION