Journal
ELECTROCHEMICAL AND SOLID STATE LETTERS
Volume 8, Issue 4, Pages A184-A187Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.1861042
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The reversible Li-driven copper extrusion/insertion mechanism in Cu2.33V4O11 electrodes has been investigated and a new ion exchange assisted electrochemical process proposed. Most notably, this process entails a concomitant ion exchange of Cu ions for Li ions during the charging of LixV4O11 + Cu-0 composite electrodes vs. Li. The electrochemical performance of such cells in terms of capacity retention and power are explained on the basis of a competition for the electrochemically generated Cu ions between ion exchange with Li+ within the Li-V-O host and dissolution into the electrolyte. (C) 2005 The Electrochemical Society.
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