Research Abstract


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

2013年5月3日 Scientific Reports 3 : 1764 doi: 10.1038/srep01764


Mohamed R. Berber1,4, 藤ヶ谷 剛彦1,3, 佐々木 一成2,3 & 中嶋 直敏1,3,5

  1. 九州大学カーボンニュートラル・エネルギー国際研究所 九州大学大学院 工学研究院 応用化学部門
  2. 九州大学カーボンニュートラル・エネルギー国際研究所 九州大学 工学研究院 機械工学部門
  3. 九州大学カーボンニュートラル・エネルギー国際研究所
  4. タンタ大学(エジプト)
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.