The paper of Prof. Naotoshi Nakashima (Principal Investigator, Fuel Cells Research Division, I²CNER) and Assoc.Prof. Tsuyohiko Fujigaya (Fuel Cells Research Division, I²CNER) was published in “ChemCatChem” on Jan.2, 2014.
The development of a high-performance, durable, and less expensive membrane electrode assembly (MEA) composed of a polymer electrolyte membrane and electrocatalysts is important for developing fuel cells. Herein, we described the design and fabrication of an electrocatalyst with carbon black, polybenzimidazole doped with poly(vinylphosphonic acid) (PVPA), and platinum nanoparticles as an electron-conducting support material, an electrolyte, and a metal catalyst, respectively. Most importantly, we used PVPA in place of phosphoric acid, which is a widely used acid dopant, as the acid dopant for both the electrocatalyst and the polymer electrolyte membrane. We reported that the use of PVPA is crucial for the high performance of the MEA because it prevented the leaching of acid molecules from the MEA, which led to high durability compared to that of the phosphoric acid-doped MEAs.
Authors: Mohamed R. Berber, Tsuyohiko Fujigaya and Naotoshi Nakashima
Article first published online: 2 January, 2014