Electrode materials and electrochemical capacitors using same
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United States of America Patent
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Jun 11, 1996
Grant Date -
N/A
app pub date -
Dec 1, 1994
filing date -
Dec 1, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrochemical capacitor device (10) including an anode (20) and a cathode (30) separated by a separator (40) and surrounded by an electrolyte (50). The anode (20) and cathode (30) is fabricated from a multi-valent, multiple oxidation state material. The material has a high, an intermediate, and a low oxidation state. In an initial condition, both the anode and cathode are in the intermediate oxidation state. During charging, one electrode will be oxidized to the higher states, while the other electrode will be reduced to the lower state. The processes are reversed during discharge.
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