Title:
DIAPHRAGM FOR ALKALINE WATER ELECTROLYSIS
Document Type and Number:
WIPO Patent Application WO/2013/180071
Kind Code:
A1
Abstract:
Provided is a diaphragm for alkaline water electrolysis: having excellent characteristics that are generally required by diaphragms for alkaline water electrolysis (in other words: (1) gas does not pass through the diaphragm;
(2) the diaphragm is permeable to ions; (3) the diaphragm prevents shorting between electrodes; and (4) the diaphragm is provided with mechanical strength and chemical strength against alkaline water); and is capable of minimizing a rise in voltage caused by gas, which is generated at an electrode during electrolysis, adhering to the diaphragm surface. This diaphragm for alkaline water electrolysis is provided with an ion-permeable membrane, and a porous reinforcement body positioned on one or both sides of the ion-permeable membrane. The ion-permeable membrane is composed of a polymer having medium-acidic ion exchange groups, weakly-acidic ion exchange groups, strong basic ion exchange groups, medium basic ion exchange groups, or weak basic ion exchange groups. The porous reinforcement body exhibits wettability with respect to a potassium hydroxide aqueous solution with a concentration of 30 wt%.
Inventors:
INOUE TAKEO (JP)
HIGUCHI HIROYUKI (JP)
AMINO ICHIRO (JP)
NISHIGAWARA MASAYA (JP)
TACHIBANA TOSHIMITSU (JP)
TSUKAMOTO KATSUKI (JP)
HIGUCHI HIROYUKI (JP)
AMINO ICHIRO (JP)
NISHIGAWARA MASAYA (JP)
TACHIBANA TOSHIMITSU (JP)
TSUKAMOTO KATSUKI (JP)
Application Number:
PCT/JP2013/064667
Publication Date:
December 05, 2013
Filing Date:
May 27, 2013
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
C25B13/08; B01J47/12; B32B5/18; B32B5/24
Foreign References:
| JPH0617278A | 1994-01-25 | |||
| JPS5739185A | 1982-03-04 | |||
| JPS61130347A | 1986-06-18 | |||
| JPH02212527A | 1990-08-23 | |||
| JPH07233267A | 1995-09-05 |
Attorney, Agent or Firm:
MOMII, Takafumi (JP)
Takafumi Momii (JP)
Takafumi Momii (JP)
Download PDF:
Previous Patent: METHOD FOR MANUFACTURING TONER SUPPLY ROLLER AND TONER SUPPLY ROLLER
Next Patent: DIAPHRAGM FOR ALKALINE WATER ELECTROLYSIS
Next Patent: DIAPHRAGM FOR ALKALINE WATER ELECTROLYSIS