The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2009
Filed:
Jul. 28, 2004
Porter Mitchell, San Diego, CA (US);
Xiaomei Xi, Carlsbad, CA (US);
Linda Zhong, San Diego, CA (US);
Bin Zou, Chandler, AZ (US);
Porter Mitchell, San Diego, CA (US);
Xiaomei Xi, Carlsbad, CA (US);
Linda Zhong, San Diego, CA (US);
Bin Zou, Chandler, AZ (US);
Maxwell Technologies, Inc., San Diego, CA (US);
Abstract
Electrodes are constructed with pressure-bonding techniques that simplify alignment of various electrode components during lamination. In an exemplary embodiment, a current collector is made from aluminum foil that has been roughed or pitted on both surfaces. The surfaces of the current collector can be further treated to enhance adhesion properties of these surfaces. Layers of film that include active electrode material, such as activated carbon particles, are fabricated using non-lubricated techniques. Each film is coated on one side with an adhesive binder solution, such as a thermoplastic solution. The adhesive binder is dried, and the films are laminated to the current collector using a calender with heated rollers. The resulting electrode product is processed to shape electrodes, which can then be used in electrical energy storage devices, including double layer capacitors.