2014年1月2日、九州大学 カーボンニュートラル・エネルギー国際研究所（I²CNER） 燃料電池研究部門主任研究者 中嶋直敏教授及び藤ヶ谷剛彦准教授の研究グループは、『ChemCatChem』に研究成果を発表しました。

■概要

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.

■論文
Title:
High-Temperature Polymer Electrolyte Fuel Cell Using Poly(vinylphosphonic acid) as an Electrolyte Shows a Remarkable Durability

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

DOI: 10.1002/cctc.201300884

Article first published online: 2 January, 2014