US 11,955,669 B2
Fuel cell bipolar plate alloys
Soo Kim, Cambridge, MA (US); Jonathan Mailoa, Cambridge, MA (US); Lei Cheng, Sunnvale, CA (US); and Nathan Craig, Santa Clara, CA (US)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Nov. 30, 2022, as Appl. No. 18/072,235.
Application 18/072,235 is a division of application No. 16/694,455, filed on Nov. 25, 2019, granted, now 11,532,827.
Prior Publication US 2023/0088316 A1, Mar. 23, 2023
Int. Cl. H01M 8/0208 (2016.01); C22C 9/00 (2006.01); C22C 9/01 (2006.01); C22C 14/00 (2006.01); C22C 19/03 (2006.01); C22C 21/00 (2006.01); C22C 21/12 (2006.01); C22C 38/02 (2006.01); H01M 8/021 (2016.01); H01M 8/0215 (2016.01); H01M 8/0228 (2016.01); H01M 8/1004 (2016.01)
CPC H01M 8/0208 (2013.01) [C22C 9/00 (2013.01); C22C 14/00 (2013.01); C22C 19/03 (2013.01); C22C 21/00 (2013.01); C22C 38/02 (2013.01); H01M 8/021 (2013.01); H01M 8/0215 (2013.01); H01M 8/0228 (2013.01); H01M 8/1004 (2013.01); C22C 9/01 (2013.01); C22C 21/12 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A bipolar plate of a fuel cell, the bipolar plate comprising:
a substrate having first and second surfaces; and
a surface layer coating on at least one of the first and/or second surfaces, the surface layer coating including an alloy having at least a partially amorphous structure and a formula: AlxFeySiz, AlxMnySiz, or AlxNiySiz; where x is present up to 0.885; y is present up to 0.85; z is 0.05 to 0.8; and the sum of x, y, and z is 1.