Title:
METHOD FOR MANUFACTURING STAINLESS STEEL FOR POLYMER FUEL CELL SEPARATOR
Document Type and Number:
WIPO Patent Application WO/2021/095997
Kind Code:
A1
Abstract:
The present specification relates to a method for manufacturing stainless steel for a polymer fuel cell separator and, more specifically, discloses a method for manufacturing stainless steel for a polymer fuel cell separator, in which a non-conductive coating is effectively removed, and a new coating is formed to secure low contact resistance and high corrosion resistance. According to an embodiment of the disclosed method for manufacturing stainless steel for a polymer fuel cell separator, the method for manufacturing stainless steel for a polymer fuel cell separator comprises performing alternating current electrolysis by submerging, in a sulfuric acid solution, stainless steel having a passivation coating provided on a surface thereof by cold rolling and bright annealing, wherein the alternating current electrolysis is performed by applying the current density of 10 to 30A/dm2.
Inventors:
KIM YOUNG JUN (KR)
SEO BO-SUNG (KR)
KIM KWANG MIN (KR)
KIM DONG-HOON (KR)
SEO BO-SUNG (KR)
KIM KWANG MIN (KR)
KIM DONG-HOON (KR)
Application Number:
PCT/KR2020/001939
Publication Date:
May 20, 2021
Filing Date:
February 12, 2020
Export Citation:
Assignee:
POSCO (KR)
International Classes:
H01M8/021; C22C38/00; C22C38/50; C25F1/06; C25F7/00; H01M8/1018
Foreign References:
| KR20160082632A | 2016-07-08 | |||
| KR101515417B1 | 2015-04-28 | |||
| KR20180107050A | 2018-10-01 | |||
| KR101387767B1 | 2014-04-21 | |||
| KR20170035374A | 2017-03-31 | |||
| KR20140081161A | 2014-07-01 | |||
| KR20150133565A | 2015-11-30 |
Attorney, Agent or Firm:
SELIM INTELLECTUAL PROPERTY LAW FIRM (KR)
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