Carbon-Free All-in-One Electrode Using Porous Ti Sheet for PEFCs

Carbon black support is generally used for PEFC electrocatalysts, while their durability is an important technological issue caused by e.g. carbon corrosion. Metal oxide supports have been studied as alternatives to carbon black. TiO2 has also been considered as an alternative support material due t...

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Bibliographic Details
Published in:ECS transactions 2018-07, Vol.86 (13), p.541-547
Main Authors: Kawachino, Daiki, Yasutake, Masahiro, Odoi, Hirotoshi, Noda, Zhiyun, Matsuda, Junko, Hayashi, Akari, Sasaki, Kazunari
Format: Article
Language:English
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Summary:Carbon black support is generally used for PEFC electrocatalysts, while their durability is an important technological issue caused by e.g. carbon corrosion. Metal oxide supports have been studied as alternatives to carbon black. TiO2 has also been considered as an alternative support material due to its stability under both cathode and anode conditions. Here, a Ti-based sheet-form electrode is developed, consisting of Pt electrocatalysts, and a porous metallic Ti sheet acting as both catalyst support and gas diffusion layer (GDL). Ti-based nanofibers with a diameter of several nm were formed on the surface of the porous Ti sheet via NaOH treatment. Pt catalysts were successfully decorated on such nanostructure to construct a three-dimensional network structure in a carbon-free all-in-one electrode for PEFCs.
ISSN:1938-5862
1938-6737
1938-6737
1938-5862
DOI:10.1149/08613.0541ecst