High temperature proton exchange membrane fuel cells: progress in advanced materials and key technologies

Area of Science:

• Electrochemistry
• Materials Science
• Energy Conversion

Background:

• High temperature proton exchange membrane fuel cells (HT-PEMFCs) are promising for vehicles and combined heat and power (CHP) systems due to efficiency and impurity tolerance.
• Key challenges include high cost and low durability, stemming from insufficient material performance at elevated operating temperatures.

Purpose of the Study:

• To provide a comprehensive review of the state-of-the-art in HT-PEMFC technology.
• To discuss current challenges and propose future research directions for practical applications.

Main Methods:

• Review of recent advancements in HT-PEMFC materials (electrocatalysts, membranes, bipolar plates).
• Analysis of synthesis methods, assembly techniques, and degradation mechanisms.
• Examination of mitigation strategies and HT-PEMFC based CHP systems.

Main Results:

• Significant progress has been made in developing novel materials and understanding degradation.
• Various mitigation strategies are being explored to enhance performance and durability.
• HT-PEMFCs show potential for efficient energy generation in diverse applications.

Conclusions:

• Further research is needed to overcome cost and durability hurdles for widespread HT-PEMFC adoption.
• Focus on catalyst development, membrane technology, and system integration is crucial.
• Addressing degradation mechanisms will accelerate the transition of HT-PEMFCs to practical use.