Journal
SOLID STATE IONICS
Volume 361, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ssi.2021.115569
Keywords
Polymer electrolyte fuel cells; Polybenzimidazole; Ionic liquids; High temperature
Categories
Funding
- Fundamental Research (Discipline Arrangement) project from Shenzhen Science and Technology Innovation Committee [JCYJ20170412154554048]
- Peacock Team Project from Shenzhen Science and Technology Innovation Committee [KQTD2015033110182370]
Ask authors/readers for more resources
Increasing the operating temperature of polymer electrolyte fuel cells (PEFCs) can enhance reaction kinetics, improve CO tolerance of catalysts, and simplify water-heat management systems. In this study, an ionic liquid-based polymer electrolyte was successfully fabricated, demonstrating promising performance for high temperature PEFCs. The composite membrane showed high proton conductivity and stable output performance at elevated temperatures.
Elevating the operating temperature of polymer electrolyte fuel cells (PEFCs) can facilitate the reaction kinetics and improve the CO tolerance of catalysts, and simplify the complex water-heat management system of fuel cells. In this study, we fabricated the ionic liquid-based polymer electrolyte that can operate up to 250 degrees C without external humidification. The membrane utilized polybenzimidazole (PBI) as the polymer matrix, and ionic liquids as the proton conductive fillers. Among all the investigated ionic liquids, diethylmethylammonium trifluoromethanesulfonate ([dema][TfO]) shows favorable performance and stability. The PBI-[dema][TfO] composite membrane exhibits high proton conductivity of 108.9 mS cm(-1) at 250 degrees C. The single cell with PBI[dema][TfO] composite membrane and Pt/C as the electrode shows output performance of 144 and 62 mW/cm(2) at 125 degrees C and 250 degrees C, respectively. This work demonstrates that it is very promising to fabricate high temperature PEFCs using the ionic liquid-based polymer electrolyte.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available