[18a-WL1_201-1~8] 6.4 Thin films and New materials

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)

[18a-WL1_201-5] RuO₂ coating on stainless by PCSD for PEFC separator

〇Iwao Yamaguchi¹, Yuuki Kitanaka¹, Masayuki Fukuda¹, Tomohiko Nakajima¹ (1.AIST)

Keywords:

contact resistance,ruthenium oxide

Toward application in polymer electrolyte membrane fuel cell separators, ruthenium oxide was coated onto stainless steel (SUS) using a photo-assisted chemical solution method. Laser irradiation enabled RuO₂ formation without oxidizing the SUS substrate. Contact resistance with carbon fibers was 1.7 mohm·cm², and after corrosion resistance testing, it remained at 4.5 mohm·cm², demonstrating practical performance.