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

Research output: Contribution to journalArticle

24 Citations (Scopus)

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°C, AMFCs with in-situ cross-linked ionomers showed promising stability with an operating life time of more than 350 hours at 100 mA/cm2. 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.

Original languageEnglish (US)
Pages (from-to)93-100
Number of pages8
JournalElectrochimica Acta
Volume152
DOIs
StatePublished - Jan 10 2015

Fingerprint

Ionomers
Fuel cells
Membranes
Durability
Electrodes
Binders
High temperature operations
Block copolymers
Anions
Cathodes
Negative ions
Ions
Fabrication
Processing

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

@article{9bfcd3953893467fb3232693cdd7ecee,
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°C, AMFCs with in-situ cross-linked ionomers showed promising stability with an operating life time of more than 350 hours at 100 mA/cm2. 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.",
author = "Yongjun Leng and Lizhu Wang and Hickner, {Michael A.} and Wang, {Chao Yang}",
year = "2015",
month = "1",
day = "10",
doi = "10.1016/j.electacta.2014.11.055",
language = "English (US)",
volume = "152",
pages = "93--100",
journal = "Electrochimica Acta",
issn = "0013-4686",
publisher = "Elsevier Limited",

}

Alkaline membrane fuel cells with in-situ cross-linked ionomers. / Leng, Yongjun; Wang, Lizhu; Hickner, Michael A.; Wang, Chao Yang.

In: Electrochimica Acta, Vol. 152, 10.01.2015, p. 93-100.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Alkaline membrane fuel cells with in-situ cross-linked ionomers

AU - Leng, Yongjun

AU - Wang, Lizhu

AU - Hickner, Michael A.

AU - Wang, Chao Yang

PY - 2015/1/10

Y1 - 2015/1/10

N2 - 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°C, AMFCs with in-situ cross-linked ionomers showed promising stability with an operating life time of more than 350 hours at 100 mA/cm2. 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.

AB - 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°C, AMFCs with in-situ cross-linked ionomers showed promising stability with an operating life time of more than 350 hours at 100 mA/cm2. 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.

UR - http://www.scopus.com/inward/record.url?scp=84912016566&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84912016566&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2014.11.055

DO - 10.1016/j.electacta.2014.11.055

M3 - Article

AN - SCOPUS:84912016566

VL - 152

SP - 93

EP - 100

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -