TY - JOUR
T1 - Cell performance of Pd-Sn catalyst in passive direct methanol alkaline fuel cell using anion exchange membrane
AU - Kim, Jandee
AU - Momma, Toshiyuki
AU - Osaka, Tetsuya
N1 - Funding Information:
This work was supported in part 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 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. The authors are grateful to Tokuyama Corporation for providing anion exchange membrane and anion exchange ionomer.
PY - 2009/4/15
Y1 - 2009/4/15
N2 - Direct methanol alkaline fuel cell (DMAFC) using anion exchange membrane (AEM) was operated in passive condition. Cell with AEM exhibits a higher open circuit voltage (OCV) and superior cell performance than those in cell using Nafion. From the concentration dependences of methanol, KOH in fuel and ionomer in anode catalyst layer, it is found that the key factors are to improve the ionic conductivity at the anode and to form a favorable ion conductive path in catalyst layer in order to enhance the cell performance. In addition, by using home-made Pd-Sn/C catalyst as a cathode catalyst on DMAFC, the membrane electrode assembly (MEA) using Pd-Sn/C catalyst as cathode exhibits the higher performance than the usual commercially available Pt/C catalyst in high methanol concentration. Therefore, the Pd-Sn/C catalyst with high tolerance for methanol is expected as the promising oxygen reduction reaction (ORR) catalyst in DMAFC.
AB - Direct methanol alkaline fuel cell (DMAFC) using anion exchange membrane (AEM) was operated in passive condition. Cell with AEM exhibits a higher open circuit voltage (OCV) and superior cell performance than those in cell using Nafion. From the concentration dependences of methanol, KOH in fuel and ionomer in anode catalyst layer, it is found that the key factors are to improve the ionic conductivity at the anode and to form a favorable ion conductive path in catalyst layer in order to enhance the cell performance. In addition, by using home-made Pd-Sn/C catalyst as a cathode catalyst on DMAFC, the membrane electrode assembly (MEA) using Pd-Sn/C catalyst as cathode exhibits the higher performance than the usual commercially available Pt/C catalyst in high methanol concentration. Therefore, the Pd-Sn/C catalyst with high tolerance for methanol is expected as the promising oxygen reduction reaction (ORR) catalyst in DMAFC.
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.2008.12.108
DO - 10.1016/j.jpowsour.2008.12.108
M3 - Article
AN - SCOPUS:62649121385
SN - 0378-7753
VL - 189
SP - 999
EP - 1002
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 2
ER -
