DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Probing Anion Exchange Membrane Fuel Cell Cathodes by Varying Electrocatalysts and Electrode Processing

Journal Article · · Journal of the Electrochemical Society

To date, several high-performing anion exchange membrane fuel cells (AEMFCs) have been demonstrated, but most these studies have focused on Pt containing cathodes with high loadings. Here, we explore and compare the performance and perform electrochemical diagnostics on three leading AEMFC cathode electrocatalysts: Pt/C, Ag/C, and Fe–N–C with electrodes that have been processed with either powder or dispersion-based ionomers using perfluorinated anion exchange polymers. Pt/C had the highest performance but also showed a strong dependence on ionomer type, with powder ionomer exhibiting much higher performance. These results were consistent with the observations for Ag/C but did not hold for the Fe–N–C catalyst where almost no change was observed between powder and dispersion-based ionomers. This is the first-time the impact of powder and dispersion ionomer with different classes of cathode electrocatalysts on the fuel cell performance have been compared, and the results have strong implications for the ability to achieve high performance at low loadings and for better understanding catalyst-ionomer interactions within AEMFCs.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Hydrogen and Fuel Cell Technologies Office
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1843638
Report Number(s):
NREL/JA-5900-81449
Journal Information:
Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 2 Vol. 169; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (27)

PGM‐Free Cathode Catalysts for PEM Fuel Cells: A Mini‐Review on Stability Challenges journal December 2018
Oxygen Reduction Reaction on Silver Catalysts in Alkaline Media: a Minireview journal October 2018
Importance of balancing membrane and electrode water in anion exchange membrane fuel cells journal January 2018
Anion exchange membrane fuel cells: Current status and remaining challenges journal January 2018
Understanding how single-atom site density drives the performance and durability of PGM-free Fe–N–C cathodes in anion exchange membrane fuel cells journal December 2021
Alkaline Anion-Exchange Membrane Fuel Cells: Challenges in Electrocatalysis and Interfacial Charge Transfer journal November 2019
Self-Anchored Platinum-Decorated Antimony-Doped-Tin Oxide as a Durable Oxygen Reduction Electrocatalyst journal June 2021
Fuel Cell Catalyst Layers: A Polymer Science Perspective journal July 2013
Oxygen Reduction Reaction and Peroxide Generation on Shape-Controlled and Polycrystalline Platinum Nanoparticles in Acidic and Alkaline Electrolytes journal July 2014
Poly(aryl piperidinium) membranes and ionomers for hydroxide exchange membrane fuel cells journal April 2019
New roads and challenges for fuel cells in heavy-duty transportation journal March 2021
High-performing commercial Fe–N–C cathode electrocatalyst for anion-exchange membrane fuel cells journal August 2021
Platinum group metal-free catalysts boost cost competitiveness of fuel cell vehicles journal July 2019
Performance enhancement and degradation mechanism identification of a single-atom Co–N–C catalyst for proton exchange membrane fuel cells journal November 2020
Anion-exchange membranes in electrochemical energy systems journal January 2014
Preparation of radiation-grafted powders for use as anion exchange ionomers in alkaline polymer electrolyte fuel cells journal January 2014
The first anion-exchange membrane fuel cell to exceed 1 W cm −2 at 70 °C with a non-Pt-group (O 2 ) cathode journal January 2017
Beyond catalysis and membranes: visualizing and solving the challenge of electrode water accumulation and flooding in AEMFCs journal January 2018
A high conductivity ultrathin anion-exchange membrane with 500+ h alkali stability for use in alkaline membrane fuel cells that can achieve 2 W cm −2 at 80 °C journal January 2018
Atomically dispersed metal–nitrogen–carbon catalysts for fuel cells: advances in catalyst design, electrode performance, and durability improvement journal January 2020
Radiation-grafted anion-exchange membranes: the switch from low- to high-density polyethylene leads to remarkably enhanced fuel cell performance journal January 2019
Direct atomic-level insight into the active sites of a high-performance PGM-free ORR catalyst journal August 2017
Synthesis and Characterization of Perfluorinated Anion Exchange Membranes journal August 2017
Editors’ Choice—Examining Performance and Durability of Anion Exchange Membrane Fuel Cells with Novel Spirocyclic Anion Exchange Membranes journal April 2021
Review—Electromobility: Batteries or Fuel Cells? journal January 2015
Toyota MIRAI Fuel Cell Vehicle and Progress Toward a Future Hydrogen Society journal January 2015
Catalysts for Polymer Membrane Fuel Cells journal January 2020