TY - JOUR
T1 - Improved catalytic performance of nitrided Co-Ti and Fe-Ti catalysts for oxygen reduction as non-noble metal cathodes in acidic media
AU - Yin, Fengxiang
AU - Takanabe, Kazuhiro
AU - Katayama, Masao
AU - Kubota, Jun
AU - Domen, Kazunari
PY - 2010/9
Y1 - 2010/9
N2 - M-Ti/carbon black electrocatalysts (M: Mn, Fe, Co, Ni, Cu, Mo) were prepared by the polymerized complex (PC) method and subsequent nitridation under ammonia flow, and were investigated as cathodes for the oxygen reduction reaction (ORR) in 0.1 M H2SO4 aq. Among the metals investigated, Co and Fe gave high onset potentials of 0.86 and 0.87 V vs. RHE, respectively. In comparison with the Co-only catalyst, the Co-Ti catalyst showed higher current, reflecting high density of Co-related active sites. The presence of Ti was also essential for the electrode stability under severe acidic and oxidizing conditions.
AB - M-Ti/carbon black electrocatalysts (M: Mn, Fe, Co, Ni, Cu, Mo) were prepared by the polymerized complex (PC) method and subsequent nitridation under ammonia flow, and were investigated as cathodes for the oxygen reduction reaction (ORR) in 0.1 M H2SO4 aq. Among the metals investigated, Co and Fe gave high onset potentials of 0.86 and 0.87 V vs. RHE, respectively. In comparison with the Co-only catalyst, the Co-Ti catalyst showed higher current, reflecting high density of Co-related active sites. The presence of Ti was also essential for the electrode stability under severe acidic and oxidizing conditions.
KW - Cobalt
KW - Iron
KW - Non-noble metal cathode
KW - Oxygen reduction reaction
KW - Polymer electrolyte fuel cell
KW - Titanium
UR - http://www.scopus.com/inward/record.url?scp=77955467225&partnerID=8YFLogxK
U2 - 10.1016/j.elecom.2010.06.012
DO - 10.1016/j.elecom.2010.06.012
M3 - Article
AN - SCOPUS:77955467225
SN - 1388-2481
VL - 12
SP - 1177
EP - 1179
JO - Electrochemistry Communications
JF - Electrochemistry Communications
IS - 9
ER -