イシトビ　ヒロカズ   ISHITOBI HIROKAZU   石飛　宏和    所属   明治大学  理工学部    職種   専任准教授
言語種別	英語
発行・発表の年月	2014
形態種別	国際会議議事録
査読	査読あり
標題	Analysis of Material and Charge Transfer in the Fiber Catalyst Layer for Polymer Electrode Fuel Cells
執筆形態	共著(筆頭者)
掲載誌名	POLYMER ELECTROLYTE FUEL CELLS 14
掲載区分	国外
出版社・発行元	ELECTROCHEMICAL SOC INC
巻・号・頁	64(3),pp.361-368
著者・共著者	H. Ishitobi,T. Yoshida,N. Nakagawa
概要	Nanofiber electrocatalysts for polymer electrode fuel cells has been proposed in recent years. In this study, we analyzed material transfer rate and electrode reaction rate in the nanofiber catalyst layer using rotating disk electrode. Carbon alloy nanofiber was examined for a cathode catalyst. We focused on effects of the fiber length and catalyst loading on the catalyst layer activity. The transport situation was discontinuously changed at a higher loading amount of relatively long catalysts. The material transfer rate was increased at higher catalyst loading with longer nanofibers. This phenomena is explained by the difference of layer structure between the fiber catalyst and the particle-like catalyst. Relatively long (6.9 mu m, for example) catalyst with catalyst loading at around 1 mg cm(-2) is appropriate condition of catalyst layer because of its high material transfer rate inside the catalyst layer.
DOI	10.1149/06403.0361ecst
ISSN	1938-5862