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Antioxidant technology for durability enhancement in polymer electrolyte membranes for fuel cell applications

Kwon, Taehyun and Lim, Youngjoon and Cho, Jinwon and Lawler, Robin and Min, Byeong Jo and Goddard, William A., III and Jang, Seung Soon and Kim, Jin Young (2022) Antioxidant technology for durability enhancement in polymer electrolyte membranes for fuel cell applications. Materials Today, 58 . pp. 135-163. ISSN 1369-7021. doi:10.1016/j.mattod.2022.06.021.

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While polymer electrolyte membrane fuel cells (PEMFCs) have surged in popularity due to their low environmental impact and high efficiency, their susceptibility to degradation by in-situ generated peroxide and oxygen radical species has prevented their widespread adoption. To alleviate chemical attack on components of PEMFCs, particularly on polymer electrolyte membranes (PEMs), antioxidant approaches have been the subject of enormous interest as a key solution because they can directly scavenge and remove detrimental peroxide and oxygen radical species. However, a consequence is that long-term PEMFC device operation can cause undesirable adverse degradation of antioxidant additives provoked by the distinctive chemical/electrochemical environment of low pH, electric potential, water flux, and ion exchange/concentration gradient. Moreover, changes in the physical state such as migration, agglomeration, and dissolution of antioxidants by mechanical or chemical pressures are serious problems that gradually deteriorate antioxidant activity and capacity. This review presents current opportunities for and limitations to antioxidant therapy for durability enhancement in PEMs for electrochemical device applications. We also provide a summary of advanced synthetic design strategies and in-depth analyses of antioxidants regarding optimizing activity-stability factors. This review will bring new insight into the design to realization of ideal antioxidant nanostructures for PEMs and open up new opportunities for enhancing proliferation of durable PEMFCs.

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Goddard, William A., III0000-0003-0097-5716
Jang, Seung Soon0000-0002-1920-421X
Kim, Jin Young0000-0002-7375-8328
Additional Information:© 2022 Elsevier. Received 21 March 2022, Revised 17 May 2022, Accepted 25 June 2022, Available online 15 July 2022. This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (Nos. 20188550000440 and 20213030030260), the program of Future Hydrogen Original Technology Development (NRF-2021M3I3A1082879) through the National Research Foundation (NRF) of Korea funded by the Korea government (Ministry of Science and ICT, MSIT), and KIST Institutional Program (2E31871). W.A.G. gratefully acknowledges support from NSF (CBET-2005250) and the Hong Kong Quantum AI Lab Ltd. in the frame of the innoHK intiative. T.K. was supported by the NRF of Korea grant funded by the Korea government (MSIT) (No. 2022R1C1C2004703). Author Contributions. T.K., Y.L., J.C., and R.L. contributed equally on this work. Data Availability. Data sharing not applicable to this article as no datasets were generated or analyzed during the current study. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Funding AgencyGrant Number
Ministry of Trade, Industry & Energy (Korea)20188550000440
Ministry of Trade, Industry & Energy (Korea)20213030030260
National Research Foundation of KoreaNRF-2021M3I3A1082879
Korea Institute of Science and Technology (KIST)2E31871
Hong Kong Quantum AI Lab Ltd.UNSPECIFIED
National Research Foundation of Korea2022R1C1C2004703
Subject Keywords:Antioxidant; Polymer electrolyte membrane; Perfluorosulfonic acid; Fuel cell; Durability
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Record Number:CaltechAUTHORS:20220720-918435000
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115710
Deposited By: George Porter
Deposited On:21 Jul 2022 15:21
Last Modified:17 Dec 2022 01:28

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