Global to push GA events into
skip to main content

Title: Membrane-electrode structures for molecular catalysts for use in fuel cells and other electrochemical devices

Water soluble catalysts, (M)meso-tetra(N-Methyl-4-Pyridyl)Porphinepentachloride (M=Fe, Co, Mn & Cu), have been incorporated into the polymer binder of oxygen reduction cathodes in membrane electrode assemblies used in PEM fuel cells and found to support encouragingly high current densities. The voltages achieved are low compared to commercial platinum catalysts but entirely consistent with the behavior observed in electroanalytical measurements of the homogeneous catalysts. A model of the dynamics of the electrode action has been developed and validated and this allows the MEA electrodes to be optimized for any chemistry that has been demonstrated in solution. It has been shown that improvements to the performance will come from modifications to the structure of the catalyst combined with optimization of the electrode structure and a well-founded pathway to practical non-platinum group metal catalysts exists.
Inventors:
; ; ; ; ; ; ;
Issue Date:
OSTI Identifier:
1326793
Assignee:
The Regents of the University of California (Oakland, CA) LBNL
Patent Number(s):
9,455,451
Application Number:
14/052,576
Contract Number:
AC02-05CH11231
Resource Relation:
Patent File Date: 2013 Oct 11
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 30 DIRECT ENERGY CONVERSION

Works referenced in this record:

Electrochemical and spectroscopic study of novel Cu and Fe-based catalysts for oxygen reduction in alkaline media
journal, September 2012

Materials for fuel-cell technologies
journal, November 2001
  • Steele, Brian C. H.; Heinzel, Angelika
  • Nature, Vol. 414, Issue 6861, p. 345-352
  • DOI: 10.1038/35104620

Low Pt loading high performance cathodes for PEM fuel cells
journal, January 2003

Catalysis of electrochemical reactions at redox polymer electrodes: Kinetic model for stationary voltammetric techniques
journal, January 1982
  • Andrieux, C. P.; Dumas-Bouchiat, J. M.; Savéant, J. M.
  • Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, Vol. 131, p. 1-35
  • DOI: 10.1016/0022-0728(82)87059-9

Homogeneous redox catalysis of electrochemical reactions: Part I. Introduction
journal, February 1978
  • Andrieux, C. P.; Dumas-Bouchiat, J. M.; Saveant, J. M.
  • Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, Vol. 87, Issue 1, p. 39-53
  • DOI: 10.1016/S0022-0728(78)80378-7

Homogeneous redox catalysis of electrochemical reactions: Part II. Rate determining electron transfer, evaluation of rate and equilibrium parameters
journal, February 1978
  • Andrieux, C. P.; Dumas-Bouchiat, J. M.; Saveant, J. M.
  • Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, Vol. 87, Issue 1, p. 55-65
  • DOI: 10.1016/S0022-0728(78)80379-9

Homogeneous redox catalysis of electrochemical reactions: Part III. Rate determining electron transfer. Kinetic characterization of follow-up chemical reactions
journal, March 1978
  • Andrieux, C. P.; Dumas-Bouchiat, J. M.; Saveant, J. M.
  • Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, Vol. 88, Issue 1, p. 43-48
  • DOI: 10.1016/S0022-0728(78)80338-6

Molecular Catalysis of Electrochemical Reactions. Mechanistic Aspects
journal, July 2008
  • Savéant, Jean-Michel
  • Chemical Reviews, Vol. 108, Issue 7, p. 2348-2378
  • DOI: 10.1021/cr068079z

Dynamics of electron hopping in assemblies of redox centers. Percolation and diffusion
journal, April 1992
  • Blauch, David N.; Saveant, Jean Michel
  • Journal of the American Chemical Society, Vol. 114, Issue 9, p. 3323-3332
  • DOI: 10.1021/ja00035a025

A poly-p-nitrostyrene on platinum electrode. Polymer charging kinetics and electrocatalysis of organic dihalide reductions
journal, May 1980
  • Kerr, John B.; Miller, Larry L.; Van de Mark, Michael R.
  • Journal of the American Chemical Society, Vol. 102, Issue 10, p. 3383-3390
  • DOI: 10.1021/ja00530a014

Depression of proton conductivity in recast Nafion® film measured on flat substrate
journal, April 2009

Composition and performance modelling of catalyst layer in a proton exchange membrane fuel cell
journal, January 1999

Modelling the performance of the cathode catalyst layer of polymer electrolyte fuel cells
journal, August 1998

Effect of pore structure, randomness and size on effective mass diffusivity
journal, January 2002
  • Mezedur, Minas M.; Kaviany, Massoud; Moore, Wayne
  • AIChE Journal, Vol. 48, Issue 1, p. 15-24
  • DOI: 10.1002/aic.690480104

Effective diffusivity and water-saturation distribution in single- and two-layer PEMFC diffusion medium
journal, November 2003
  • Nam, Jin Hyun; Kaviany, Massoud
  • International Journal of Heat and Mass Transfer, Vol. 46, Issue 24, p. 4595-4611
  • DOI: 10.1016/S0017-9310(03)00305-3

Modeling gas-phase flow in porous media
journal, July 2005