Axion Power International Inc (AXPWQ)

[Ubertino]

(WO/2010/067509) ELECTRIC DOUBLE LAYER CAPACITOR AND METHOD FOR MANUFACTURING SAME

Pub. No.:
WO/2010/067509

International Application No.:
PCT/JP2009/005898

Publication Date:
17.06.2010

International Filing Date:
06.11.2009

IPC: H01G 9/058 (2006.01), H01G 9/00 (2006.01), H01G 9/02 (2006.01)

Applicants:
PANASONIC CORPORATION [JP/JP]; 1006, Oaza Kadoma, Kadoma-shi, Osaka 5718501 (JP) (All Except US).
HASHIMOTO, Yasuhiro; (US Only).
ASARI, Takuma; (US Only).
KUMAGAI, Hironori; (US Only).
HAYASHI, Shigeo; (US Only).

Inventors:
HASHIMOTO, Yasuhiro; .
ASARI, Takuma; .
KUMAGAI, Hironori; .
HAYASHI, Shigeo; .

Agent: PATENT CORPORATE BODY ARCO PATENT OFFICE; 3rd Fl., Bo-eki Bldg., 123-1, Higashimachi, Chuo-ku, Kobe-shi, Hyogo 6500031 (JP) .
Priority Data:
2008-312358
08.12.2008
JP

Title:
(EN) ELECTRIC DOUBLE LAYER CAPACITOR AND METHOD FOR MANUFACTURING SAME

Abstract:
(EN) Disclosed is an electric double layer capacitor (200) comprising a positive electrode (206), a separator (205) and a negative electrode (207) laminated in this order in a container, wherein the space between the positive electrode (206) and the negative electrode (207) is filled with an electrolyte solution. The electrode plate of either or both of the positive electrode (206) and the negative electrode (207) is composed of a collector (201, 203), and a plurality of conductive microfibers (202, 204) which are formed upright on the surface of the collector in such a manner that one end of each microfiber is electrically connected to the collector surface. The surface side of the electrode plate is covered with the separator (205), and the electrode plate and the separator (205) are joined together by pressure bonding. Consequently, in the electric double layer capacitor which comprises conductive microfibers such as carbon nanotubes as an active material, the active material is compressed to a high density, thereby increasing the energy density.

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