Non-destructive fabrication of Nafion/silica composite membrane via swelling-filling modification strategy for high temperature and low humidity PEM fuel cell

Guoxiao Xu, Zhiguang Wu, Zenglv Wei, Wenjie Zhang, Junli Wu, Ying Li, Jing Li, Konggang Qu and Weiwei Cai

Renewable Energy, 2020, vol. 153, issue C, 935-939

Abstract: Based on the swelling-filling modification strategy, Nafion/silica composite membrane is facilely fabricated by non-destructively filling silica nano-particles into the Nafion framework. High temperature proton conductive performance of modified Nafion membrane is significantly enhanced due to the synergistic effect of maintaining the ordered nanophase-separated structure in Nafion and excellent water retention capacity of the silica fillers. Proton conductivity of the composite membrane is therefore raised to 33 mS/cm at 110 °C and 60% RH, which is enhanced by ca. 30% compared with the pristine Nafion. Taking account into the improved mechanical and oxidative stabilities attributed to the hydrogen bonding interaction between silica nano-particles and Nafion chains, high temperature fuel cell performance is measured and found to be remarkably improved by 37% at low humidity by considering the power density.

Keywords: Proton exchange membrane fuel cell; Non-destructive modification; Nafion/silica membrane; High temperature; Low humidity (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (7)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:153:y:2020:i:c:p:935-939

DOI: 10.1016/j.renene.2020.02.056

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