Development of proton-exchange membrane fuel cell with ionic liquid technology

Area of Science:

• Electrochemistry
• Materials Science
• Green Chemistry

Background:

• Proton exchange membrane fuel cells (PEMFCs) are efficient electrochemical generators converting chemical to electrical energy.
• Traditional PEMFCs face limitations at higher temperatures due to poor electrolyte membrane conductivity.
• Ionic liquids (ILs) offer a promising, greener alternative for enhancing PEMFC performance, especially at elevated temperatures.

Purpose of the Study:

• To review the latest advancements in using ionic liquids (ILs) as electrolytes in high-temperature PEMFCs (HT-PEMFCs).
• To investigate the combination of ILs with polybenzimidazole (PBI) for improved thermal stability, mechanical properties, and proton conductivity.
• To discuss current challenges and future directions in IL-based electrolytes for PEMFCs, including synthesis, fabrication, and experimental techniques.

Main Methods:

• Comprehensive literature review of recent research on ionic liquids in PEMFCs.
• Analysis of electrolyte membranes incorporating ILs, particularly with polybenzimidazole (PBI).
• Evaluation of system fabrication methods, IL synthesis, and experimental techniques for HT-PEMFCs.

Main Results:

• Ionic liquids significantly improve proton conductivity and thermal stability in PEMFC electrolytes.
• ILs combined with PBI demonstrate enhanced mechanical properties and suitability for high-temperature operation.
• ILs present a viable pathway for developing more efficient and durable fuel cell technologies.

Conclusions:

• Ionic liquids are crucial for advancing high-temperature PEMFC technology.
• Further research into IL synthesis, material selection, and system integration is needed for commercialization.
• ILs contribute to sustainable energy solutions by offering greener alternatives in fuel cell applications.