TY - JOUR
T1 - Preparation of Pt/mesoporous carbon (MC) electrode catalyst and its reactivity toward oxygen reduction
AU - Hayashi, Akari
AU - Notsu, Hideo
AU - Kimijima, Ken'ichi
AU - Miyamoto, Junichi
AU - Yagi, Ichizo
N1 - Funding Information:
We thank the Fuel Cell Promotion Office of Agency of Natural Resources and Energy, Ministry of Economy, Trade and Industry for support.
PY - 2008/9/1
Y1 - 2008/9/1
N2 - Highly structurally controllable mesoporous carbon (MC) support was synthesized through the self-organization of surfactants and carbon precursors, followed by carbonization. Then, Pt catalysts were successfully deposited on MC, in order to create a model of an ideal triple phase boundary in such a nano-space. The resulting Pt/MC catalysts showed better oxygen reduction reactivity with the existence of Nafion® than without that. Handling of ionomers is a key to develop an ideal triple phase boundary within the pores of MC. Depending on the solvent where Nafion® was diluted, the reactivity toward oxygen reduction was different. Due to its hydrophobic pores of MC, Nafion® diluted by more hydrophobic solvent was able to access to the pores easily. As a result, Pt inside the mesopores was efficiently used. Furthermore, by changing a Pt precursor, oxygen reduction current started to increase at more positive potential, indicating the enhanced activity.
AB - Highly structurally controllable mesoporous carbon (MC) support was synthesized through the self-organization of surfactants and carbon precursors, followed by carbonization. Then, Pt catalysts were successfully deposited on MC, in order to create a model of an ideal triple phase boundary in such a nano-space. The resulting Pt/MC catalysts showed better oxygen reduction reactivity with the existence of Nafion® than without that. Handling of ionomers is a key to develop an ideal triple phase boundary within the pores of MC. Depending on the solvent where Nafion® was diluted, the reactivity toward oxygen reduction was different. Due to its hydrophobic pores of MC, Nafion® diluted by more hydrophobic solvent was able to access to the pores easily. As a result, Pt inside the mesopores was efficiently used. Furthermore, by changing a Pt precursor, oxygen reduction current started to increase at more positive potential, indicating the enhanced activity.
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U2 - 10.1016/j.electacta.2008.01.110
DO - 10.1016/j.electacta.2008.01.110
M3 - Article
AN - SCOPUS:44949259899
SN - 0013-4686
VL - 53
SP - 6117
EP - 6125
JO - Electrochimica Acta
JF - Electrochimica Acta
IS - 21
ER -