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Methanol-tolerant cathode catalyst composite for direct methanol fuel cells

Los Alamos National Laboratory

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Technology Marketing Summary

A direct methanol fuel cell (DMFC) having a methanol fuel supply, oxidant supply, and its membrane electrode assembly (MEA) formed of an anode electrode and a cathode electrode with a membrane therebetween, a methanol oxidation catalyst adjacent the anode electrode and the membrane, an oxidant reduction catalyst adjacent the cathode electrode and the membrane, comprises an oxidant reduction catalyst layer of a platinum-chromium alloy so that oxidation at the cathode of methanol that crosses from the anode through the membrane to the cathode is reduced with a concomitant increase of net electrical potential at the cathode electrode.

Description

The present invention is a direct methanol fuel cell (DMFC) having a methanol fuel supply, oxidant supply, and a membrane electrode assembly (MEA) formed of an anode electrode and a cathode electrode with a solid polymer electrolyte membrane therebetween, a methanol oxidation catalyst adjacent the anode electrode and the membrane, an oxidant reduction catalyst adjacent the cathode electrode and the membrane, wherein the improvement comprises an oxidant reduction catalyst layer containing platinum-chromium so that oxidation at the cathode of methanol that crosses from the anode through the membrane to the cathode is reduced with a concomitant increase of net electrical potential at the cathode electrode.

In one embodiment, the platinum-chromium catalyst is supplied at a loading less than 1 mg cm.sup.-2 and the cathode catalyst layer includes a perfluorinated ion exchange polymer in a volume percent between 35% and 55%.

Benefits

See Attached Patent

More Information

LOS ALAMOS NATIONAL LABORATORY - EXPRESS LICENSING PROGRAM

This patent is offered for Non-Exclusive licensing through Los Alamos National Laboratory's Express Licensing Program.  The financial terms for an Express License are listed below:

One-Time Non-Exclusive License Issue Fee:

Seven Thousand Five Hundred ($7,500) U.S. Dollars

Annual License Fee:

Five Hundred ($500) U.S. Dollars

Earned Royalties on Sales:

Two Percent (2.0%)

Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Patent 7,014,931
Patent
7,014,931
Methanol-tolerant cathode catalyst composite for direct methanol fuel cells
A direct methanol fuel cell (DMFC) having a methanol fuel supply, oxidant supply, and its membrane electrode assembly (MEA) formed of an anode electrode and a cathode electrode with a membrane therebetween, a methanol oxidation catalyst adjacent the anode electrode and the membrane, an oxidant reduction catalyst adjacent the cathode electrode and the membrane, comprises an oxidant reduction catalyst layer of a platinum-chromium alloy so that oxidation at the cathode of methanol that crosses from the anode through the membrane to the cathode is reduced with a concomitant increase of net electrical potential at the cathode electrode.
Los Alamos National Laboratory 03/21/2006
Issued
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
DOE S-100,546PrototypeAvailable - for Express Licensing08/02/201308/02/2013

Contact LANL About This Technology

To: Laura Barber<Licensing@lanl.gov>