Enhancing performance of Nafion®-based PEMFC by 1-D channel metal-organic frameworks as PEM filler

Cheng Hsiu Tsai, Chun Chieh Wang, Chih Yi Chang, Chia Her Lin*, Yui Whei Chen-Yang

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

47 引文 斯高帕斯(Scopus)

摘要

The paper reports for the first time the preparation of novel Nafion®-based composite membranes (PEM-1 and PEM-2) using two 1-D channel microporous metal-organic frameworks (MOFs), CPO-27(Mg) and MIL-53(Al), as fillers, for proton exchange membrane fuel cells (PEMFCs). Results show that the corresponding water uptake and the proton conductivity of the composite membranes were improved by 1.7 times and 2.1 times in magnitude, respectively, as compared to the recast Nafion® membrane (RN). Further, the PEMFC single cells fabricated from these novel PEM-1 (FC-1) was able to achieve power densities of ca. 74% and 92% higher than that of the RN membrane (FC-3) measured at 50 °C and 80 °C, respectively, under 99.9% humidified conditions. In particular, FC-1 yielded power densities as high as 853 mW cm-2 at 50 °C and 568 mW cm-2 at 80 °C under 15.0% humidified conditions. Such notable improvements were mainly ascribed to the water retention ability of the MOFs as fillers brought about by the interplay of their pore structures, the amount of coordinated water and the interactions between the unsaturated metal sites and water molecules. This study further invokes that the 1-D channel microporous MOFs with high water retention ability are good candidates for fillers in proton exchange membrane of PEMFCs.

原文英語
頁(從 - 到)15696-15705
頁數10
期刊International Journal of Hydrogen Energy
39
發行號28
DOIs
出版狀態已發佈 - 2014 9月 23
對外發佈

ASJC Scopus subject areas

  • 可再生能源、永續發展與環境
  • 燃料技術
  • 凝聚態物理學
  • 能源工程與電力技術

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