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

Abstract

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:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1326793
Patent Number(s):
9,455,451
Application Number:
14/052,576
Assignee:
The Regents of the University of California (Oakland, CA) LBNL
DOE Contract Number:
AC02-05CH11231
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Oct 11
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 30 DIRECT ENERGY CONVERSION

Citation Formats

Kerr, John B., Zhu, Xiaobing, Hwang, Gi Suk, Martin, Zulima, He, Qinggang, Driscoll, Peter, Weber, Adam, and Clark, Kyle. Membrane-electrode structures for molecular catalysts for use in fuel cells and other electrochemical devices. United States: N. p., 2016. Web.
Kerr, John B., Zhu, Xiaobing, Hwang, Gi Suk, Martin, Zulima, He, Qinggang, Driscoll, Peter, Weber, Adam, & Clark, Kyle. Membrane-electrode structures for molecular catalysts for use in fuel cells and other electrochemical devices. United States.
Kerr, John B., Zhu, Xiaobing, Hwang, Gi Suk, Martin, Zulima, He, Qinggang, Driscoll, Peter, Weber, Adam, and Clark, Kyle. Tue . "Membrane-electrode structures for molecular catalysts for use in fuel cells and other electrochemical devices". United States. doi:. https://www.osti.gov/servlets/purl/1326793.
@article{osti_1326793,
title = {Membrane-electrode structures for molecular catalysts for use in fuel cells and other electrochemical devices},
author = {Kerr, John B. and Zhu, Xiaobing and Hwang, Gi Suk and Martin, Zulima and He, Qinggang and Driscoll, Peter and Weber, Adam and Clark, Kyle},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 27 00:00:00 EDT 2016},
month = {Tue Sep 27 00:00:00 EDT 2016}
}

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