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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
Structural and electrochemical studies of α-manganese dioxide (α-MnO2)
Journal of Power Sources, Volume 68, No. 2, Year 1997
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Description
The structural and electrochemical properties of α-MnO2, prepared by acid digestion of Mn2O3, and its lithiated derivatives xLi2O·MnO2 (0≤x≤0.25) have been investigated as insertion compounds in the search for new and viable cathode materials for rechargeable 3 V batteries. The α-MnO2 product fabricated by this technique contains water within the large (2 × 2) channels of the structure; the water can be removed from the α-MnO2 framework without degradation of the structure, and then at least partially replaced by Li2O (lithium oxide). The Li2O-doped α-MnO2 electrodes, described generically as xLi2O·MnO2, stabilize the structure and provide higher capacities on cycling than the parent material. The structures of these α-MnO2-type electrode materials are described, and electrochemical data are presented for both liquid electrolyte and polymer electrolyte Li/α-MnO2 and Li/xLi2O·MnO2 cells. © 1997 Published by Elsevier Science S.A.
Authors & Co-Authors
Johnson, Christopher S.
United States, Lemont
Argonne National Laboratory
Thackeray, Michaelm M.
United States, Lemont
Argonne National Laboratory
Loong, Chungkeung
United States, Lemont
Argonne National Laboratory
Statistics
Citations: 183
Authors: 3
Affiliations: 2
Identifiers
Doi:
10.1016/S0378-7753(96)02633-X
ISSN:
03787753
Research Areas
Environmental