公开(公告)号：EP4239735A1

公开(公告)日：2023-09-06

申请号：EP21897888.0

申请日：2021-11-19

申请人： KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： SATO, Toshiki ,  SUZUKI, Jun ,  IKEDA, Kotaro ,  WATANABE, Yusuke ,  ITAKURA, Takuya ,  TAMBO, Tomoki

IPC分类号： H01M8/0206 ,  H01M8/0213 ,  H01M8/0215 ,  H01M8/0226 ,  H01M8/0228 ,  H01M8/0245 ,  C23C24/08

摘要： Provided are: a surface treatment titanium material for a fuel cell separator, said surface treatment titanium material having good toughness and excellent adhesion between a surface layer and a base material even when press molding is performed in harsh conditions, and it being possible to maintain electroconductivity for a long period of time; and a method for manufacturing said surface treatment titanium material. The surface treatment titanium material for a fuel cell separator is provided with a titanium base material having a passivation film on the surface, and a surface layer formed on the titanium base material, the surface layer including a titanium oxide layer and carbon particles, the carbon particles being dispersed inside the titanium oxide layer. The total film thickness of the titanium oxide layer and the passivation film is 25 nm or more, and when peak separation is performed on the Raman spectrum combining the surface layer and the passivation film, the ratio (Ti 2 O 3 /TiO 2 ) of the peak height indicating the Ti 2 O 3 and the peak height indicating the TiO 2 is 0.08-1.45, inclusive, and the void ratio found on the boundary of the titanium oxide layer and the titanium base material is 0.30 or less.

公开(公告)号：EP3828973A1

公开(公告)日：2021-06-02

申请号：EP20195483.1

申请日：2020-09-10

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： ADACHI, Makoto ,  KINOSHITA, Katsuhiko ,  ASHITAKA, Yu ,  MITANI, Naohiro ,  WATANABE, Yusuke ,  SATO, Kenji

IPC分类号： H01M8/0273 ,  H01M8/242 ,  H01M8/1004 ,  H01M8/1018

摘要： A fuel cell includes a membrane electrode assembly (10) having electrodes (14, 16) disposed on both surfaces of an electrolyte membrane (12), a gas diffusion layer (17) stacked on one surface of the membrane electrode assembly (10), a resin frame (20) assembled onto the one surface of the membrane electrode assembly (10) so as to surround the outer periphery of the gas diffusion layer (17) apart from the outer periphery of the gas diffusion layer (17), and a resin sheet (60) disposed between the gas diffusion layer (17) and the resin frame (20), and the membrane electrode assembly (10) so as to fill a space between the inner periphery of the resin frame (20) and the outer periphery of the gas diffusion layer (17).