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US 12,305,304 B2Granted
Interface for carbon oxide electrolyzer bipolar membrane
AssigneeTwelve Benefit Corporation
InventorsShuai Zhao, Edward Izett
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Abstract
Provided herein are membrane electrode assemblies (MEAs) for carbon oxide reduction. According to various embodiments, the MEAs are configured to address challenges particular to COx including mitigating the deleterious effects of electrical current fluctuations on the MEA. Bipolar membrane MEAs equipped with an interface composed of nanoparticles are described.
Claims19
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.
5 more elements
A membrane electrode assembly comprising:
- a cathode catalyst layer comprising a catalyst configured for reduction of COx, wherein the catalyst of the cathode catalyst layer comprises Au, Ag, Cu, or a combination thereof;
- 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.
3 more elements
A method of electrochemically reducing COx comprising:
- (a) providing a carbon oxide to a COx reduction reactor, and
- (b) electrochemically reducing the carbon oxide at a cathode of a COx electrolyzer to produce a carbon containing product,
- wherein the COx reduction reactor comprises a membrane electrode assembly comprising:
- a cathode catalyst layer;
- 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.
6 more elements
Dependencies are inferred from the claim text.