Invention Grant
- Patent Title: Stainless steel separator for fuel cell and the manufacturing method thereof
- Patent Title (中): 燃料电池用不锈钢隔板及其制造方法
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Application No.: US12595754Application Date: 2007-07-27
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Publication No.: US08828258B2Publication Date: 2014-09-09
- Inventor: Yoo Taek Jeon , Yeon Soo Jeong
- Applicant: Yoo Taek Jeon , Yeon Soo Jeong
- Applicant Address: KR Ulsan
- Assignee: Hyundai Hysco
- Current Assignee: Hyundai Hysco
- Current Assignee Address: KR Ulsan
- Agency: Lowe Hauptman & Ham, LLP
- Priority: KR10-2007-0037762 20070418
- International Application: PCT/KR2007/003624 WO 20070727
- International Announcement: WO2008/130078 WO 20081030
- Main IPC: C23F1/00
- IPC: C23F1/00 ; C23G1/08 ; C23F1/28 ; C22C38/00 ; C22C38/42 ; C22C38/44 ; C25D11/34 ; H01M8/02
Abstract:
A method for surface treatment of a stainless steel separator for a fuel cell comprises preparing a stainless steel sheet containing nickel, chrome and iron, and having a passive film on a surface of the stainless steel sheet, and dipping the stainless steel sheet into a mixed etching solution of nitric acid (HNO3) and sulfuric acid (H2SO4) at a temperature of 50-70° C. for 30 seconds to 30 minutes to selectively lower an amount of Fe in the passive film formed on the surface of the stainless steel sheet.
Public/Granted literature
- US20100129697A1 STAINLESS STELL SEPARATOR FOR FUEL CELL AND THE MANUFACTURING METHOD THEREOF Public/Granted day:2010-05-27
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