Abstract
Hydrated phosphates were investigated as positive electrode materials in lithium batteries. Reversible lithium insertion into amorphous and crystalline and compositions was found at potentials between 3.5 and 2.5 V vs. The roles of (i) specific surface area, amorphous vs. crystalline state, content, and electronic contact between particles in the composite positive electrode, on the electrochemical performances of these materials are discussed. Very stable cycling was obtained for optimized and electrodes at an average voltage of 3.0 and 3.2 V vs. respectively. © 2002 The Electrochemical Society. All rights reserved.
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