US 10,256,491 B2 · Membrane electrode assembly

Abstract

The invention includes a catalysed membrane and membrane electrode assembly. The membrane and membrane electrode assembly comprise an ion-conducting membrane component comprising an ion-conducting membrane, an anode catalyst layer, and a cathode catalyst layer. The anode catalyst layer comprises a first electrocatalyst component comprising a first platinum-containing electrocatalyst and a first carbon support. The first carbon support supports the first platinum-containing electrocatalyst, and the electrochemical platinum surface area in the anode catalyst layer is 5-100 cm2Pt/cm2 of the geometric electrode area of the anode catalyst layer. The cathode catalyst layer comprises a second electrocatalyst component and a second oxygen evolution reaction electrocatalyst. The second electrocatalyst component comprises a second platinum-containing electrocatalyst and a second carbon support, wherein the second carbon support supports the second platinum-containing electrocatalyst component.

Claims9

Dependent claims

A catalysed membrane comprising:

(i) an ion-conducting membrane component having a first face and a second face, wherein the ion-conducting membrane component comprises an ion-conducting membrane;
(ii) an anode catalyst layer on the first face of the ion-conducting membrane component, wherein the anode catalyst layer comprises:
(a) a first electrocatalyst component comprising a first platinum-containing electrocatalyst and a first carbon support, wherein the first carbon support supports the first platinum-containing electrocatalyst;
and
wherein the electrochemical platinum surface area in the anode catalyst layer is 5-100 cm2Pt/cm2 of the geometric electrode area of the anode catalyst layer;
and,
(iii) a cathode catalyst layer on the second face of the ion-conducting membrane component, wherein the cathode catalyst layer comprises:
(a) a second electrocatalyst component comprising a second platinum-containing electrocatalyst and a second carbon support, wherein the second carbon support supports the second platinum-containing electrocatalyst component;
and,
(b) an oxygen evolution reaction electrocatalyst.

7 more elements

A membrane electrode assembly comprising:

(i) an ion-conducting membrane component having a first face and a second face, wherein the ion-conducting membrane component comprises an ion-conducting membrane;
(ii) an anode catalyst layer on the first face of the ion-conducting membrane component, wherein the anode catalyst layer comprises:
(a) a first electrocatalyst component comprising a first platinum-containing electrocatalyst and a first carbon support, wherein the first carbon support supports the first platinum-containing electrocatalyst;
and
wherein the electrochemical platinum surface area in the anode catalyst layer is 5-100 cm2Pt/cm2 of the geometric electrode area of the anode catalyst layer;
and,
(iii) a cathode catalyst layer on the second face of the ion-conducting membrane component, wherein the cathode catalyst layer comprises:
(a) a second electrocatalyst component comprising a second platinum-containing electrocatalyst and a second carbon support, wherein the second carbon support supports the second platinum-containing electrocatalyst component;
(b) a oxygen evolution reaction electrocatalyst;
(iv) an anode gas diffusion layer on a face of the anode catalyst layer not in contact with the first face of the ion-conducting membrane;
and
(v) a cathode gas diffusion layer on a face of the cathode catalyst layer not in contact with the second face of the ion-conducting membrane.

9 more elements

Dependencies are inferred from the claim text.

Membrane electrode assembly

Life of this patent

Membrane electrode assembly

Life of this patent

Abstract

Claims9