TY - JOUR
T1 - Synthesis of carbon-supported Pd-Sn catalyst by ultrasonic irradiation for oxygen reduction reaction
AU - Kim, Jandee
AU - Momma, Toshiyuki
AU - Osaka, Tetsuya
N1 - Funding Information:
This work was supported partly by the Global COE Program “Center for Practical Chemical Wisdom”, the Encouraging Development Strategic Research Center's Program “Establishment of Consolidated Research Center's Institute for Advanced Science and Medical Care”, and partly by the Grant-in-Aid for Specially Promoted Research “Establishment of Electrochemical Device Engineering” from the Ministry of Education, Culture, Sports, Science and Technology (MEXT)”, Japan.
PY - 2009/4/15
Y1 - 2009/4/15
N2 - Carbon-supported Pd-Sn (Pd-Sn/C) catalyst was prepared under ultrasonic irradiation, and its electrocatalytic activity for oxygen reduction reaction (ORR) was evaluated in 0.5 M KOH. TEM images showed that the prepared Pd-Sn/C catalyst particles are smaller in average size than carbon-supported Pd (Pd/C) catalyst particles. XRD and XPS results indicated the small particle size and the electronic interaction between Pd and Sn for the Pd-Sn/C catalyst. The Pd-Sn/C catalyst has a higher ORR activity than the Pd/C catalyst in alkaline media. In addition, the Pd-Sn/C catalyst showed a lower Tafel slope and a larger number of electrons transferred for ORR, compared with those of the Pd/C catalyst. These results indicate that Sn influences both the kinetics and the mechanism of ORR. Based on these results, the Pd-Sn/C catalyst prepared by using ultrasonic irradiation can be expected as a promising ORR catalyst in alkaline media.
AB - Carbon-supported Pd-Sn (Pd-Sn/C) catalyst was prepared under ultrasonic irradiation, and its electrocatalytic activity for oxygen reduction reaction (ORR) was evaluated in 0.5 M KOH. TEM images showed that the prepared Pd-Sn/C catalyst particles are smaller in average size than carbon-supported Pd (Pd/C) catalyst particles. XRD and XPS results indicated the small particle size and the electronic interaction between Pd and Sn for the Pd-Sn/C catalyst. The Pd-Sn/C catalyst has a higher ORR activity than the Pd/C catalyst in alkaline media. In addition, the Pd-Sn/C catalyst showed a lower Tafel slope and a larger number of electrons transferred for ORR, compared with those of the Pd/C catalyst. These results indicate that Sn influences both the kinetics and the mechanism of ORR. Based on these results, the Pd-Sn/C catalyst prepared by using ultrasonic irradiation can be expected as a promising ORR catalyst in alkaline media.
KW - Alkaline media
KW - Methanol fuel cell
KW - Non-Pt catalyst
KW - Oxygen reduction catalysts
KW - Ultrasound
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U2 - 10.1016/j.jpowsour.2008.12.109
DO - 10.1016/j.jpowsour.2008.12.109
M3 - Article
AN - SCOPUS:62649103199
SN - 0378-7753
VL - 189
SP - 909
EP - 915
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 2
ER -
