Methanol-Tolerant Cathode Catalyst Composite For Direct Methanol Fuel Cells

Zhu, Yimin; Zelenay, Piotr

Title: Methanol-Tolerant Cathode Catalyst Composite For Direct Methanol Fuel Cells

Full Record
Other Related Research

Abstract

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.

Inventors:

Zhu, Yimin ^[1]; Zelenay, Piotr ^[1]

Los Alamos, NM

Issue Date:: 2006-03-21

Research Org.:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

OSTI Identifier:: 879881

Patent Number(s):: 7014931

Application Number:: 10/317654

Assignee:: The Regents of the University of California (Los Alamos, NM)

Patent Classifications (CPCs):: H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Show more

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
H01M4/8605 - {Porous electrodes}
H01M4/921 - {Alloys or mixtures with metallic elements}
H01M4/926 - {on carbon or graphite}
H01M4/928 - {Unsupported catalytic particles
H01M8/04197 - {Preventing means for fuel crossover}
H01M8/1011 - Direct alcohol fuel cells [DAFC], e.g. direct methanol fuel cells [DMFC]

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Y02E60/50 - Fuel cells

Show less

DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Citation Formats


                    Zhu, Yimin, and Zelenay, Piotr. Methanol-Tolerant Cathode Catalyst Composite For Direct Methanol Fuel Cells.  United States: N. p., 2006. 
        Web.

Copy to clipboard


                    Zhu, Yimin, & Zelenay, Piotr. Methanol-Tolerant Cathode Catalyst Composite For Direct Methanol Fuel Cells.  United States.

Copy to clipboard


                    Zhu, Yimin, and Zelenay, Piotr. Tue .  
        "Methanol-Tolerant Cathode Catalyst Composite For Direct Methanol Fuel Cells".  United States.  https://www.osti.gov/servlets/purl/879881.

Copy to clipboard


                    
@article{osti_879881,

  title        = {Methanol-Tolerant Cathode Catalyst Composite For Direct Methanol Fuel Cells},

  author       = {Zhu, Yimin and Zelenay, Piotr},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2006},

  month        = {3}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Methanol-tolerant cathode catalyst composite for direct methanol fuel cells

Patent Zhu, Yimin [Los Alamos, NM]; Zelenay, Piotr [Los Alamos, NM]

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 Pt.sub.3Cr/C 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.
Full Text Available
Catalyst inks and method of application for direct methanol fuel cells

Patent Zelenay, Piotr [Los Alamos, NM]; Davey, John [Los Alamos, NM]; Ren, Xiaoming [Los Alamos, NM]; ...

Inks are formulated for forming anode and cathode catalyst layers and applied to anode and cathode sides of a membrane for a direct methanol fuel cell. The inks comprise a Pt catalyst for the cathode and a Pt--Ru catalyst for the anode, purified water in an amount 4 to 20 times that of the catalyst by weight, and a perfluorosulfonic acid ionomer in an amount effective to provide an ionomer content in the anode and cathode surfaces of 20% to 80% by volume. The inks are prepared in a two-step process while cooling and agitating the solutions. The final solutionmore » « less
Full Text Available
Enhanced methanol utilization in direct methanol fuel cell

Patent Ren, Xiaoming [Los Alamos, NM]; Gottesfeld, Shimshon [Los Alamos, NM]

The fuel utilization of a direct methanol fuel cell is enhanced for improved cell efficiency. Distribution plates at the anode and cathode of the fuel cell are configured to distribute reactants vertically and laterally uniformly over a catalyzed membrane surface of the fuel cell. A conductive sheet between the anode distribution plate and the anodic membrane surface forms a mass transport barrier to the methanol fuel that is large relative to a mass transport barrier for a gaseous hydrogen fuel cell. In a preferred embodiment, the distribution plate is a perforated corrugated sheet. The mass transport barrier may be convenientlymore » « less
Full Text Available
Sulfur-tolerant anode material for direct hydrocarbon solid oxide fuel cells

Patent Chen, Fanglin; Yang, Chenghao; Yang, Zhibin

In one aspect, the present subject matter is directed to a composite anode for a hydrocarbon solid oxide fuel cell, the anode comprising a layered perovskite ceramic and a bi-metallic alloy.
Full Text Available
Air breathing direct methanol fuel cell

Patent Ren, Xiaoming [Los Alamos, NM]; Gottesfeld, Shimshon [Los Alamos, NM]

An air breathing direct methanol fuel cell is provided with a membrane electrode assembly, a conductive anode assembly that is permeable to air and directly open to atmospheric air, and a conductive cathode assembly that is permeable to methanol and directly contacting a liquid methanol source. Water loss from the cell is minimized by making the conductive cathode assembly hydrophobic and the conductive anode assembly hydrophilic.
Full Text Available

Similar Records