Composite electrode and method for fabricating same
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United States of America Patent
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May 25, 2010
Grant Date -
Feb 1, 2007
app pub date -
Jul 17, 2006
filing date -
Feb 19, 2004
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Abstract
Composite electrodes are constructed with pressure-bonding techniques instead of an adhesive. A current collector is made from aluminum foil roughed on both surfaces. The surfaces of the collector can be treated to enhance adhesion to the surfaces. Layers of film that includes active electrode material, such as activated carbon, are fabricated and pressure-bonded to the current collector using a calender with heated rollers. The resulting composite sheet is then processed to shape electrodes, which can be used in electrical energy storage devices, including double layer capacitors.
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