Title:
LITHIUM ION CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2015/093289
Kind Code:
A1
Abstract:
A lithium ion capacitor which comprises a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a separator arranged between the positive electrode and the negative electrode, and an electrolyte. The positive electrode active material contains at least a material that reversibly supports anions. The negative electrode active material contains a carbonaceous material having a graphite-type crystal structure. The ratio of the capacitance (Cn) per unit projected area of the negative electrode to the capacitance (Cp) per unit projected area of the positive electrode, namely Cn/Cp is 20 or more.
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Inventors:
OKUNO KAZUKI (JP)
MAJIMA MASATOSHI (JP)
MAJIMA MASATOSHI (JP)
Application Number:
PCT/JP2014/081932
Publication Date:
June 25, 2015
Filing Date:
December 03, 2014
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
H01G11/22; H01G11/06; H01G11/50; H01G11/66
Foreign References:
| JPH1154383A | 1999-02-26 | |||
| JP2012253072A | 2012-12-20 | |||
| JP2010171154A | 2010-08-05 |
Attorney, Agent or Firm:
NAKATA, Motomi et al. (JP)
Nakada Motoki (JP)
Nakada Motoki (JP)
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