| US 9,812,719 B2 | ||
| Mixed-reactant fuel cells with selective electrodes | ||
| Alexey Serov, Albuquerque, NM (US); Plamen B Atanassov, Santa Fe, NM (US); Elod Gyenge, Vancouver (CA); and Amin Aziznia, Vancouver (CA) | ||
| Assigned to STC.UNM, Albuquerque, NM (US) | ||
| Appl. No. 14/774,762 |
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| Filed by Alexey Serov, Albuquerque, NM (US); Plamen B Atanassov, Santa Fe, NM (US); Elod Gyenge, Vancouver (CA); and Amin Aziznia, Vancouver (CA) | ||
| PCT Filed Mar. 11, 2014, PCT No. PCT/US2014/023559 § 371(c)(1), (2) Date Sep. 11, 2015, PCT Pub. No. WO2014/164822, PCT Pub. Date Oct. 9, 2014. |
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| Claims priority of provisional application 61/776,437, filed on Mar. 11, 2013. | ||
| Prior Publication US 2016/0020475 A1, Jan. 21, 2016 | ||
| Int. Cl. H01M 8/04 (2016.01); H01M 4/90 (2006.01); H01M 4/88 (2006.01); H01M 4/86 (2006.01); H01M 8/04089 (2016.01); H01M 8/1004 (2016.01); H01M 8/0234 (2016.01); H01M 8/0245 (2016.01) | ||
| CPC H01M 8/04104 (2013.01) [H01M 4/861 (2013.01); H01M 4/8605 (2013.01); H01M 4/8821 (2013.01); H01M 4/8828 (2013.01); H01M 4/9008 (2013.01); H01M 8/0234 (2013.01); H01M 8/0245 (2013.01); H01M 8/1004 (2013.01)] | 14 Claims |
| 1. A method for producing a cathode for a mixed reactant fuel cell comprising:
making a self-supporting porous cathode catalyst by:
mixing metal, nitrogen, and carbon precursors with a plurality of dispersed sacrificial support particles under sufficient
conditions to allow the metal, nitrogen and carbon precursors to coat the sacrificial support particles and form a metal-nitrogen-carbon
(M-N—C) compound/sacrificial support matrix;
heat treating the M-N—C compound/sacrificial support matrix to produce active sites in the matrix; and
removing the sacrificial support, thereby producing a self-supporting porous catalyst;
mixing the self-supporting porous catalyst with carbon black and an ionomer to form an ink;
coating a flexible gas diffusion layer with the ink.
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| 8. A method for producing a cathode for a mixed reactant fuel cell comprising:
making a self-supporting porous cathode catalyst by:
mixing Fe-AApyr precursors with a sacrificial support under sufficient conditions to allow the Fe-AApyr precursors to coat
the sacrificial support and form a matrix;
heat treating the matrix to produce active sites in the matrix; and
removing the sacrificial support, thereby producing a self-supporting porous catalyst;
mixing the self-supporting porous catalyst with carbon black and an ionomer to form an ink;
coating a flexible gas diffusion layer with the ink.
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