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

JOURNAL OF POWER SOURCES

卷:359

Article

Dang, Dai^1,2,3  Zhao, Bote¹  Chen, Dongchang¹  Yoo, Seonyoung¹  Lai, Samson Y.¹  Doyle, Brian¹  Dai, Shuge¹  Chen, Yu¹  Qu, Chong¹  Zhang, Lei¹  Liao, Shijun^2,3  Liu, Meilin¹ 

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[2] South China Univ Technol, Sch Chem & Chem Engn, New Energy Res Inst, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China

[3] Key Lab New Energy Technol Guangdong Univ, Guangzhou 510641, Guangdong, Peoples R China

关键词: Electrolytes;    Intermediate-temperature fuel cells;    Polymers;    Composites;    Membrane electrode assembly;   

DOI  :  10.1016/j.jpowsour.2017.05.023

来源: Elsevier

【 摘 要 】

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 (similar to 28 mS cm(-1) at 260 degrees C). Single cells based on the composite electrolytes demonstrate a peak power density of 108 mW cm(-2) at 260 degrees C. Almost no degradation in electrochemical performance could be observed during the stability test for 10 h and three thermal-cycling test in H-2/O-2 fuel cell, indicating the promising application of the composite electrolyte in solid acid fuel cells. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

Free