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	2016/12
形態種別	学術雑誌
標題	Performances of Cathode Catalyst Layer with Carbon-Alloy Nanofiber in Different Length for Polymer Electrolyte Fuel Cells
執筆形態	共著(筆頭者)
掲載誌名	JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
掲載区分	国外
出版社・発行元	SOC CHEMICAL ENG JAPAN
巻・号・頁	49(12),pp.995-1001
著者・共著者	Hirokazu Ishitobi,Ayaka Ida,Shuhei Anayama,Nobuyoshi Nakagawa
概要	The optimization of catalyst layer activity is essential for PEFCs to improve their performance. In this study, the relation between the structure of the nanofiber catalyst layer and catalyst layer activity, which includes reactivity and diffusivity, was examined. Carbon-alloy nanofiber, which is alloyed with nitrogen atoms and Pt free catalyst for oxygen reduction reaction, was used for the cathode catalyst. Four catalyst layers of nanofiber catalyst in different lengths from 0.80 to 6.4 mu m were prepared and their performances in a half cell and membrane electrode assembly (MEA) were evaluated. The bulky catalyst layer with an increased pore volume at the large secondary pore size larger than 2 mu m was formed with the longer catalyst. The MEA with the longer catalyst showed a higher performance. The bulky catalyst layer by using the longer catalyst can provide a higher utilization of the active sites and also promote mass transport.
DOI	10.1252/jcej.16we068
ISSN	0021-9592