Title:
ELECTRIC DOUBLE-LAYER CAPACITOR
Document Type and Number:
Japanese Patent JP3526236
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To lengthen service life of an electric double layer capacitor provided with a positive pole which is constituted by forming a positive pole active material layer containing a positive pole active material on a current collector body.
SOLUTION: A positive pole 210 and a negative pole 220 are so placed that a side end surface 214a of a positive pole active material layer 214 faces a surface 224a of the negative pole 220 over the entire perimeter. In this constitution, deterioration at a side end part 214b of the positive pole active material layer 214 is suppressed, and deterioration of charge/discharge property is suppressed more than in conventional electric double layer capacitors, even if charge and discharge are repeated many times, so that service life is lengthened.
Inventors:
Shimizu, Tatsuhiko
Kusama, Kazuyuki
Yano, Tsuyoshi
Kusama, Kazuyuki
Yano, Tsuyoshi
Application Number:
JP11415399A
Publication Date:
May 10, 2004
Filing Date:
April 21, 1999
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01G11/22; H01G11/10; H01G11/24; H01G11/26; H01G11/38; H01G11/42; H01G11/84; H01G11/86; (IPC1-7): H01G9/058
Attorney, Agent or Firm:
大川 宏
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