A durable polyvinyl butyral-CsH2PO4 composite electrolyte for solid acid fuel cells

Dang, Dai; Zhao, Bote; Chen, Dongchang; Yoo, Seonyoung; Lai, Samson Y.; Doyle, Brian; Dai, Shuge; Chen, Yu; Qu, Chong; Zhang, Lei; Liao, Shijun; Liu, Meilin

doi:10.1016/j.jpowsour.2017.05.023

Title: A durable polyvinyl butyral-CsH₂PO₄ composite electrolyte for solid acid fuel cells

Journal Article · Thu May 18 00:00:00 EDT 2017 · Journal of Power Sources

DOI:https://doi.org/10.1016/j.jpowsour.2017.05.023· OSTI ID:1534052

Dang, Dai ^[1]; Zhao, Bote ^[2]; Chen, Dongchang ^[2]; Yoo, Seonyoung ^[2]; Lai, Samson Y. ^[2]; Doyle, Brian ^[2]; Dai, Shuge ^[2]; Chen, Yu ^[2]; Qu, Chong ^[2]; Zhang, Lei ^[2]; Liao, Shijun ^[3]; Liu, Meilin ^[2]

Georgia Institute of Technology, Atlanta, GA (United States); South China University of Technology (SCUT), Guangzhou (China)
Georgia Institute of Technology, Atlanta, GA (United States)
South China University of Technology (SCUT), Guangzhou (China)

We report a composite electrolyte membrane composed of polyvinyl butyral (PVB) and CsH₂PO₄ has been prepared via a facile and cost-effective method for solid acid fuel cells. The effect of PVB content on conductivity, mechanical integrity, and fuel cell performance is investigated. A minimum amount of 3 wt% PVB in the CsH₂PO₄-based composite electrolyte not only offers the required mechanical integrity but also allows high conductivity (~28 mS cm^-1 at 260 °C). Single cells based on the composite electrolytes demonstrate a peak power density of 108 mW cm^-2at 260 °C. Almost no degradation in electrochemical performance could be observed during the stability test for 10 h and three thermal-cycling test in H₂/O₂ fuel cell, indicating the promising application of the composite electrolyte in solid acid fuel cells.

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Research Organization:: Univ. of California, Los Angeles, CA (United States); Georgia Institute of Technology, Atlanta, GA (United States)

Sponsoring Organization:: USDOE Advanced Research Projects Agency - Energy (ARPA-E); Guangdong Innovative and Entrepreneurial Research

Grant/Contract Number:: AR0000501; 2014ZT05N200

OSTI ID:: 1534052

Alternate ID(s):: OSTI ID: 1397494

Journal Information:: Journal of Power Sources, Vol. 359, Issue C; ISSN 0378-7753

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 7 works

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Title: A durable polyvinyl butyral-CsH₂PO₄ composite electrolyte for solid acid fuel cells