caa a22 4500 477049885 CHVBK 20180405111338.0 cr unu---uuuuu 170330e19961201xx s 000 0 eng 10.1007/BF00249929 doi (NATIONALLICENCE)springer-10.1007/BF00249929 Changes in cathode catalyst structure and activity in phosphoric acid fuel cell operation [Elektronische Daten] [T. Maoka, T. Kitai, N. Segawa, M. Ueno] Changes in the cathode catalyst structure and activity obtained from a small size phosphoric acid fuel cell (PAFC) operated for various times up to 12 000 h, were examined. It was confirmed that the platinum surface oxide reduction potential in cyclic voltammograms (CV) shifted in the positive direction with cell operation. This may be one of the manifestations of the activity enhancement for the oxygen reduction reaction (ORR). It was assumed that this activity increase for the ORR was caused by an increase in the surface roughness, due to the dissolution of the alloyed base metals. Changes in the platinum chemical state of the alloy surface, from PtO to Pt, and growth of the Pt (1 1 0) plane would also contribute to this effect. Chapman & Hall, 1996 Maoka T. Heavy Apparatus Engineering Laboratory, Toshiba Corporation, 2-1 Ukishima-cho, Kawasaki-ku, 210, Kawasaki, Japan aut Kitai T. Heavy Apparatus Engineering Laboratory, Toshiba Corporation, 2-1 Ukishima-cho, Kawasaki-ku, 210, Kawasaki, Japan aut Segawa N. Heavy Apparatus Engineering Laboratory, Toshiba Corporation, 2-1 Ukishima-cho, Kawasaki-ku, 210, Kawasaki, Japan aut Ueno M. Heavy Apparatus Engineering Laboratory, Toshiba Corporation, 2-1 Ukishima-cho, Kawasaki-ku, 210, Kawasaki, Japan aut Journal of Applied Electrochemistry Kluwer Academic Publishers 26/12(1996-12-01), 1267-1272 0021-891X 26:12<1267 1996 26 10800 https://doi.org/10.1007/BF00249929 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00249929 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Maoka T. Heavy Apparatus Engineering Laboratory, Toshiba Corporation, 2-1 Ukishima-cho, Kawasaki-ku, 210, Kawasaki, Japan aut NATIONALLICENCE 700 1- Kitai T. Heavy Apparatus Engineering Laboratory, Toshiba Corporation, 2-1 Ukishima-cho, Kawasaki-ku, 210, Kawasaki, Japan aut NATIONALLICENCE 700 1- Segawa N. Heavy Apparatus Engineering Laboratory, Toshiba Corporation, 2-1 Ukishima-cho, Kawasaki-ku, 210, Kawasaki, Japan aut NATIONALLICENCE 700 1- Ueno M. Heavy Apparatus Engineering Laboratory, Toshiba Corporation, 2-1 Ukishima-cho, Kawasaki-ku, 210, Kawasaki, Japan aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 26/12(1996-12-01), 1267-1272 0021-891X 26:12<1267 1996 26 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer