Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 157, Issue 1, Pages A50-A54Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3256129
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Funding
- Air Force Research Laboratory [FA8650-08-C-2917]
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This paper describes a totally solid-state, rechargeable, long cycle life lithium-oxygen battery cell. The cell is comprised of a Li metal anode, a highly Li-ion conductive solid electrolyte membrane laminate fabricated from glass-ceramic (GC) and polymer ceramic materials, and a solid-state composite air cathode prepared from high surface area carbon and ionically conducting GC powder. The cell exhibited excellent thermal stability and rechargeability in the 30-105 degrees C temperature range. It was subjected to 40 charge-discharge cycles at current densities ranging from 0.05 to 0.25 mA/cm(2). The reversible charge/discharge voltage profiles of the Li-O-2 cell with low polarizations between the discharge and charge are remarkable for a displacement-type electrochemical cell reaction involving the reduction of oxygen to form lithium peroxide. The results represent a major contribution in the quest of an ultrahigh energy density electrochemical power source. We believe that the Li-O-2 cell, when fully developed, could exceed specific energies of 1000 Wh/kg in practical configurations. (C) 2009 The Electrochemical Society. [DOI: 10.1149/1.3256129] All rights reserved.
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