Takeo Ebina (Leader), Material Processing Team, Research Center for Compact Chemical Process (Director: Fujio Mizukami) of National Institute of Advanced Industrial Science and Technology (AIST) (President: Hiroyuki Yoshikawa), Professor Koichi Yonemoto of Space Engineering Section, Department of Mechanical and Control Engineering, Faculty of Engineering, Kyushu Institute of Technology (KIT) (President: Teruo Shimomura) and Associate Professor Keiichi Okuyama of Department of Electronics and Control Engineering, Tsuyama National College of Technology (Tsuyama NCT) (President: Hideo Inaba), Institute of National Colleges of Technology, Japan have developed a new composite material for hydrogen tanks. The material has high hydrogen gas barrier performance and high durability.
The material is fabricated by laminating Claist®, a clay-based film, with carbon fiber reinforced plastic (CFRP) and processed at high temperature and pressure. This newly developed composite material has a simpler structure and higher reliability than the conventional materials using aluminum or high-density plastics as gas barrier liners. The results of preliminary tests such as durability tests have been accumulating, and at present, the outcomes have been favorable. This composite material is an excellent hydrogen gas barrier material, and is applicable to lightweight hydrogen tanks for use in aircrafts, spacecrafts and vehicles.
The details of this research were presented at SAMPE'08, held from May 18 in Long Beach, CA, U.S.A.