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:
Aug. 23, 2011
Filed:
Nov. 13, 2006
Hiromoto Taguchi, Tokyo, JP;
Nobuo Ando, Tokyo, JP;
Hideki Shibuya, Tokyo, JP;
Shinichi Tasaki, Tokyo, JP;
Risa Miyagawa, Tokyo, JP;
Yukinori Hato, Tokyo, JP;
Osamu Hatozaki, Tokyo, JP;
Hiromoto Taguchi, Tokyo, JP;
Nobuo Ando, Tokyo, JP;
Hideki Shibuya, Tokyo, JP;
Shinichi Tasaki, Tokyo, JP;
Risa Miyagawa, Tokyo, JP;
Yukinori Hato, Tokyo, JP;
Osamu Hatozaki, Tokyo, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A lithium ion capacitor includes a positive electrode made of a material capable of reversibly doping and dedoping lithium ions and/or anions; a negative electrode made of a material capable of reversibly doping and dedoping lithium ions; and an electrolytic solution made of an aprotonic organic solvent electrolyte solution of a lithium salt. When the negative electrode and/or positive electrode and a lithium ion supply source are electrochemically brought into contact, lithium ions are doped in a negative electrode and/or positive electrode. A positive electrode potential after the positive electrode and negative electrode are short-circuited is 2.0 V (vs. Li/Li) or less. The positive electrode and/or negative electrode has a current collector made of a metal foil that has many holes that penetrate through both sides and have an average diameter of inscribed circles of the through-holes of 100 μm or less.