Durability evaluation of a Fe–N–C catalyst in polymer electrolyte fuel cell environment via accelerated stress tests

Osmieri, Luigi; Cullen, David A.; Chung, Hoon T.; Ahluwalia, Rajesh K.; Neyerlin, Kenneth

doi:10.1016/j.nanoen.2020.105209

Durability evaluation of a Fe–N–C catalyst in polymer electrolyte fuel cell environment via accelerated stress tests

Journal Article · Thu Aug 06 00:00:00 EDT 2020 · Nano Energy

DOI:https://doi.org/10.1016/j.nanoen.2020.105209· OSTI ID:1660240

^[1]; ^[2]; Chung, Hoon T. ^[3]; Ahluwalia, Rajesh K. ^[4]; Neyerlin, Kenneth ^[1]

National Renewable Energy Lab. (NREL), Golden, CO (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Argonne National Lab. (ANL), Lemont, IL (United States)

In this work, an “atomically-dispersed” iron-nitrogen-carbon (Fe–N–C) catalyst was used to provide a systematic comparison of platinum group metal (PGM)-free electrocatalyst degradation as a function of accelerated stress tests (ASTs) in an acidic polymer electrolyte fuel cell (PEFC). It was determined that the majority of catalyst degradation was caused by cell operation in presence of O₂. In contrast, potential cycling of the Fe–N–C-containing cathode under inert atmosphere over typical PEFC cathode operation from 0.95 to 0.6 V had little to no effect. The increase in kinetic overpotential is shown to be the major source of the PEFC performance decrease during the ASTs. These results continue to showcase the need for development of robust PGM-free electrocatalysts in concert with improved electrochemical performance.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Hydrogen and Fuel Cell Technologies Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Fuel Cell Technologies Office; USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: 89233218CNA000001; AC02-06CH11357; AC05-00OR22725; AC36-08GO28308

OSTI ID:: 1660240

Alternate ID(s):: OSTI ID: 1809804
OSTI ID: 1841939
OSTI ID: 1771883
OSTI ID: 1777119

Report Number(s):: LA-UR--21-23812; NREL/JA--5900-77098; MainId:26044; UUID:4061afa3-8c42-4871-a48f-aabecff3a2ed; MainAdminID:17336

Journal Information:: Nano Energy, Journal Name: Nano Energy Vol. 78; ISSN 2211-2855

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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25 ENERGY STORAGE
PGM-free catalyst
accelerated stress test
active sites loss
durability
kinetic overpotential

Durability evaluation of a Fe–N–C catalyst in polymer electrolyte fuel cell environment via accelerated stress tests

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