Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 36, Issue -, Pages 103-106Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2013.08.022
Keywords
Layered manganese oxide; Li2MnO3; Cathode; Lithium battery
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Funding
- Office of Vehicle Technologies, Office of Energy Efficiency and Renewable Energy of the U.S. Department of Energy
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences
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An electrochemical study of structurally-integrated xLi(2)MnO(3)center dot(1-x)LiMn0.5Ni0.5O2 'composite' materials has been undertaken to investigate the stability of electrochemically-activated electrodes at the Li2MnO3-rich end of the Li2MnO3-LiMn0.5Ni0.5O2 tie-line, i.e., for 0.7 <= x <= 0.95. Excellent performance was observed for x = 0.7 in lithium half-cells; comparable to activated electrodes that have significantly lower values of x and are traditionally the preferred materials of choice. Electrodes with higher manganese content (x >= 0.8) showed significantly reduced performance. Implications for stabilizing low-cost manganese-rich, layered lithium-metaloxide electrode materials are discussed. (C) 2013 Elsevier B.V. All rights reserved.
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