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Title: Alkaline membrane fuel cells with in-situ cross-linked ionomers

Abstract

Improving cell performance and durability through both new materials and membrane electrode processing optimization is needed for the commercialization of alkaline membrane fuel cell (AMFC) technologies. In this work, we adopted an in-situ cross-linking strategy of an anion-conducting block copolymer to prepare durable ionomers for use in alkaline membrane fuel cells (AMFCs). Our goal was to use new ionomers and binders with an aim at improving long-term stability of AMFCs, especially at high operation temperatures. At 80 degrees C, AMFCs with in-situ cross-linked ionomers showed promising stability with an operating life time of more than 350 hours at 100 mA/cm(2). We found that the optimized electrode fabrication process and operating conditions can significantly improve the durability performance of AMFCs. For example, a suitable electrode binder in addition to the ion-conducting ionomer can greatly enhance the durability performance of AMFCs. Operating fuel cells under a cathode over-humification condition can also enhance the long-term stability of AMFCs. (C) 2014 Elsevier Ltd. All rights reserved.

Authors:
; ; ;
Publication Date:
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1211040
DOE Contract Number:  
DE-AR0000121
Resource Type:
Journal Article
Journal Name:
Electrochimica Acta
Additional Journal Information:
Journal Volume: 152; Journal ID: ISSN 0013-4686
Country of Publication:
United States
Language:
English

Citation Formats

Leng, YJ, Wang, LZ, Hickner, MA, and Wang, CY. Alkaline membrane fuel cells with in-situ cross-linked ionomers. United States: N. p., 2015. Web. doi:10.1016/j.electacta.2014.11.055.
Leng, YJ, Wang, LZ, Hickner, MA, & Wang, CY. Alkaline membrane fuel cells with in-situ cross-linked ionomers. United States. https://doi.org/10.1016/j.electacta.2014.11.055
Leng, YJ, Wang, LZ, Hickner, MA, and Wang, CY. 2015. "Alkaline membrane fuel cells with in-situ cross-linked ionomers". United States. https://doi.org/10.1016/j.electacta.2014.11.055.
@article{osti_1211040,
title = {Alkaline membrane fuel cells with in-situ cross-linked ionomers},
author = {Leng, YJ and Wang, LZ and Hickner, MA and Wang, CY},
abstractNote = {Improving cell performance and durability through both new materials and membrane electrode processing optimization is needed for the commercialization of alkaline membrane fuel cell (AMFC) technologies. In this work, we adopted an in-situ cross-linking strategy of an anion-conducting block copolymer to prepare durable ionomers for use in alkaline membrane fuel cells (AMFCs). Our goal was to use new ionomers and binders with an aim at improving long-term stability of AMFCs, especially at high operation temperatures. At 80 degrees C, AMFCs with in-situ cross-linked ionomers showed promising stability with an operating life time of more than 350 hours at 100 mA/cm(2). We found that the optimized electrode fabrication process and operating conditions can significantly improve the durability performance of AMFCs. For example, a suitable electrode binder in addition to the ion-conducting ionomer can greatly enhance the durability performance of AMFCs. Operating fuel cells under a cathode over-humification condition can also enhance the long-term stability of AMFCs. (C) 2014 Elsevier Ltd. All rights reserved.},
doi = {10.1016/j.electacta.2014.11.055},
url = {https://www.osti.gov/biblio/1211040}, journal = {Electrochimica Acta},
issn = {0013-4686},
number = ,
volume = 152,
place = {United States},
year = {Sat Jan 10 00:00:00 EST 2015},
month = {Sat Jan 10 00:00:00 EST 2015}
}