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Title: Flow-based anode for the electrocatalytic oxidation of a fuel or other reductant

Abstract

Anode half-cells for the electrocatalytic oxidation of a liquid or gaseous fuel or other reductant are disclosed, along with electrochemical cells that include such half-cells. The anode half-cells include redox mediator/heterogeneous redox catalyst pairs within an electrolyte solution that is also in contact with an electrode. The electrode is not in direct contact with the heterogeneous catalyst. The redox mediator must include at least one carbon atom and be capable of transferring or accepting electrons and protons while undergoing reduction or oxidation.In operation, the fuel or other reductant is oxidized and the redox mediator is reduced at the heterogeneous catalyst. The reduced form of the redox mediator can then migrate to the electrode, where it is converted back to its oxidized form, which can then migrate back to the heterogeneous catalyst, where the cycle is repeated. The disclosed anode half-cells can be used in electrochemical cells, such as in fuel cells that produce electricity, or in electrosynthetic cells that produce one or more desired chemical products.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1735088
Patent Number(s):
10727518
Application Number:
16/005,783
Assignee:
Wisconsin Alumni Research Foundation (Madison, WI)
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
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Patent
Resource Relation:
Patent File Date: 06/12/2018
Country of Publication:
United States
Language:
English

Citation Formats

Stahl, Shannon S., Gerken, James B., Anson, Colin W., Root, Thatcher W., and Preger, Yuliya. Flow-based anode for the electrocatalytic oxidation of a fuel or other reductant. United States: N. p., 2020. Web.
Stahl, Shannon S., Gerken, James B., Anson, Colin W., Root, Thatcher W., & Preger, Yuliya. Flow-based anode for the electrocatalytic oxidation of a fuel or other reductant. United States.
Stahl, Shannon S., Gerken, James B., Anson, Colin W., Root, Thatcher W., and Preger, Yuliya. Tue . "Flow-based anode for the electrocatalytic oxidation of a fuel or other reductant". United States. https://www.osti.gov/servlets/purl/1735088.
@article{osti_1735088,
title = {Flow-based anode for the electrocatalytic oxidation of a fuel or other reductant},
author = {Stahl, Shannon S. and Gerken, James B. and Anson, Colin W. and Root, Thatcher W. and Preger, Yuliya},
abstractNote = {Anode half-cells for the electrocatalytic oxidation of a liquid or gaseous fuel or other reductant are disclosed, along with electrochemical cells that include such half-cells. The anode half-cells include redox mediator/heterogeneous redox catalyst pairs within an electrolyte solution that is also in contact with an electrode. The electrode is not in direct contact with the heterogeneous catalyst. The redox mediator must include at least one carbon atom and be capable of transferring or accepting electrons and protons while undergoing reduction or oxidation.In operation, the fuel or other reductant is oxidized and the redox mediator is reduced at the heterogeneous catalyst. The reduced form of the redox mediator can then migrate to the electrode, where it is converted back to its oxidized form, which can then migrate back to the heterogeneous catalyst, where the cycle is repeated. The disclosed anode half-cells can be used in electrochemical cells, such as in fuel cells that produce electricity, or in electrosynthetic cells that produce one or more desired chemical products.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {7}
}

Works referenced in this record:

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