US 12,305,304 B2
Interface for carbon oxide electrolyzer bipolar membrane
Shuai Zhao, Santa Clara, CA (US); and Edward Izett, Berkeley, CA (US)
Assigned to Twelve Benefit Corporation, Berkeley, CA (US)
Filed by Twelve Benefit Corporation, Berkeley, CA (US)
Filed on Jun. 1, 2023, as Appl. No. 18/327,835.
Claims priority of provisional application 63/379,374, filed on Oct. 13, 2022.
Prior Publication US 2024/0141514 A1, May 2, 2024
Int. Cl. C25B 9/40 (2021.01); C25B 1/23 (2021.01); C25B 3/25 (2021.01); C25B 9/23 (2021.01); C25B 11/093 (2021.01); C25B 15/06 (2006.01)
CPC C25B 9/40 (2021.01) [C25B 1/23 (2021.01); C25B 3/25 (2021.01); C25B 9/23 (2021.01); C25B 11/093 (2021.01); C25B 15/06 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A COx reduction reactor comprising:
a membrane electrode assembly including
a cathode catalyst layer comprising a catalyst configured for reduction of COx;
an anode catalyst layer; and
a bipolar membrane disposed between the cathode catalyst layer and the anode catalyst layer, wherein the bipolar membrane comprises an anion-conducting polymer layer, a cation-conducting polymer layer, and an interface region between the anion-conducting polymer layer and the cation-conducting polymer layer, and
wherein the interface region comprises nanoparticles, wherein the nanoparticles consist essentially of carbon nanoparticles; and
wherein the interface region is from about 1 to about 10 micrometers thick.