US 11,658,304 B2
Composite reference electrode substrate and methods relating thereto
Yucong Wang, West Bloomfield, MI (US); Zhe Li, Rochester, MI (US); Jing Gao, Rochester, MI (US); and Brian J. Koch, Berkley, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Feb. 27, 2020, as Appl. No. 16/802,898.
Prior Publication US 2021/0273229 A1, Sep. 2, 2021
Int. Cl. H01M 4/66 (2006.01); H01M 4/131 (2010.01); H01M 10/0525 (2010.01); H01M 50/449 (2021.01); H01M 4/02 (2006.01)
CPC H01M 4/661 (2013.01) [H01M 4/131 (2013.01); H01M 4/667 (2013.01); H01M 10/0525 (2013.01); H01M 50/449 (2021.01); H01M 2004/021 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A composite reference electrode comprising:
a separator portion comprising aluminum oxide and having a porosity of greater than or equal to about 10 vol. % to less than or equal to about 80 vol. %;
a current collector portion integral with and adjacent to the separator portion, the current collector portion comprising aluminum and having a porosity greater than or equal to about 10 vol. % to less than or equal to about 80 vol. %, pores of the separator portion being continuous with pores of the current collector portion such that the pores of the separator portion and the pores of the current collector portion together define a plurality of channels through the composite reference electrode; and
an electroactive material layer disposed near or adjacent to a surface of the current collector portion away from the separator portion.