Water electrolysis system

a water electrolysis system and electrolysis technology, applied in the direction of electrode coatings, cell components, multiple component coatings, etc., can solve the problems of reducing the current efficiency of gas production, deteriorating the performance of the water electrolysis system in terms of purity, and extremely thin electrode catalyst layer
US20080264780A1Inactive Publication Date: 2008-10-30CHLORINE ENGINEERS CORP LTD
19 Cites 35 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
CHLORINE ENGINEERS CORP LTD
Publication Date
2008-10-30
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

In a water electrolysis system having an anode catalyst layer containing anode catalyst and a cathode catalyst layer containing cathode catalyst tightly attached, respectively, to each surface of a solid polymer electrolyte membrane comprising a cation exchange membrane, wherein at least one catalyst layer of said anode catalyst layer and cathode catalyst layer comprises a porous structure of anode catalyst or cathode catalyst dispersed in fluorine resin containing resin, featuring the surface of the anode catalyst layer or the cathode catalyst layer being hydrophobized and the water contact angle with the surface of the anode catalyst layer or the cathode catalyst layer of said porous structure being 90 degrees or more, whereby the transfer of gas to the counter electrode can be significantly suppressed, gas purity and current efficiency be improved, and safety operation of the electrolysis system be secured, without a major change in configuration of the water electrolysis system.
Need to check novelty before this filing date? Find Prior Art

Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] This invention relates to a water electrolysis system for generating oxygen and hydrogen or for generating ozone by water electrolysis in which an anode and a cathode are tightly attached, respectively, to each surface of a solid polymer electrolyte membrane comprising a cation exchange membrane, enabling hydrogen gas or oxygen gas generated at the cathode or the anode to be suppressed against transferring to the counter electrode through the cation exchange membrane, the purity of the gases to be enhanced, and safe electrolysis operation to be secured for a long time.

[0003] 2. Description of the Related Art

[0004] An electrolysis system which is composed by attaching an anode and a cathode to each surface of a solid polymer electrolyte membrane comprising a cation exchange membrane has been widely used as a superior energy-effective electrolysis system for its advantages including a low electrolytic voltage, availability ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More