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Remarkably Durable High Temperature Polymer Electrolyte Fuel Cell Based on Poly(vinylphosphonic acid)-doped Polybenzimidazole

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The paper of Prof. Naotoshi NakashimaAssoc.Prof. Tsuyohiko Fujigaya and Dr. Mohamed R. Berber (Fuel Cells Research Division, I2CNER) was published in “Scientific Reports“.

 

■ Summary

Low durability of polymer electrolyte fuel cell (PEFC) is a major drawback that should be solved. Recent studies have revealed that leaching of liquid phosphoric acid (PA) from both polymer electrolyte membrane and catalyst layers causes inhomogeneous PA distribution that results in deterioration of PEFC performance during long-term operation. Here we describe the finding that a novel PEFC free from acid leaching shows remarkable high durability (single cell test: >400,000 cycling) together with a high power density at 120°C under a non-humidified condition. This is achieved by using a membrane electrode assembly (MEA) with Pt on poly(vinylphosphonic acid)-doped polybenzimidazole wrapped on carbon nanotube and poly(vinylphosphonic acid)-doped polybenzimidazole for the electrocatalst and electrolyte membrane, respectively. Such a high performance PEFC opens the door for the next-generation PEFC for “real world” use.

 

Figure 1: Schematic illustration of the preparation technique of MWNT/PyPBI/Pt. 

 

■ Paper

Title:

Remarkably Durable High Temperature Polymer Electrolyte Fuel Cell Based on Poly(vinylphosphonic acid)-doped Polybenzimidazole

 

Authors: Mohamed R. Berber, Tsuyohiko Fujigaya, Naotoshi Nakashima

 

DOI: 10.1038/srep01764

 

Article published online: 3 MAY 2013