초록 ▼

Hybrid membrane electrode assemblies (MEAs) are presented, having an anode comprising a dense distribution of catalyst that may be borne on small, high-aspect ratio supports, such as nanostructured elements, and a cathode comprising a less dense distribution of catalyst that may be borne on lower-as

Hybrid membrane electrode assemblies (MEAs) are presented, having an anode comprising a dense distribution of catalyst that may be borne on small, high-aspect ratio supports, such as nanostructured elements, and a cathode comprising a less dense distribution of catalyst that may be borne on lower-aspect ratio supports, such as carbon particle supported catalyst.

대표청구항 ▼

[ We claim:] [1.]1. A membrane electrode assembly (MEA) having an anode layer comprising a first catalyst material borne on first support particles and a cathode layer comprising second catalyst material borne on second support particles, wherein the average density of the first catalyst material in

[ We claim:] [1.]1. A membrane electrode assembly (MEA) having an anode layer comprising a first catalyst material borne on first support particles and a cathode layer comprising second catalyst material borne on second support particles, wherein the average density of the first catalyst material in the anode layer is greater than 1.0 mg/mm.sup.3, wherein the average density of the second catalyst material in the cathode layer is less than 1.0 mg/mm.sup.3.