Electrocatalytic oxidation of methanol on high surface area unsupported catalysts

K. Jambunathan, R. Liu, L. Pan, E. Dickey, Jeffrey Shallenberger, E. Smotkin, Thomas E. Mallouk

Research output: Contribution to conferencePaper

Abstract

Fuel cells operating on methanol are gaining considerable attention as alternative power sources. One of the issues that needs to be resolved is finding better electrocatalysts for the oxidation of methanol. We are currently involved in the synthesis and the characterization of high surface area Pt-based binary, ternary and quaternary catalysts. Addition of Ru, Ir and Os as promoters for the oxidation of methanol is being investigated. Several material and electrochemical techniques were used to characterize the catalysts. Activation energies for methanol oxidation calculated at 0.4 V was between 25-28 kJ mol -1 at all the H 2 reduced catalysts considered in this work. This indicates that the oxidation mechanism of methanol at all the multi-component catalysts used in this study is probably similar. The H 2 reduced catalysts have better activities, low onset potentials and higher degree of alloying compared with the NaBH 4 reduced catalysts.

Original languageEnglish (US)
Pages108-120
Number of pages13
StatePublished - Dec 13 2005
EventFundamental Understanding of Electrode Processes, in Memory of Professor Ernest B. Yeager - Proceedings of the International Symposium - Orlando, FL, United States
Duration: Oct 12 2003Dec 17 2003

Other

OtherFundamental Understanding of Electrode Processes, in Memory of Professor Ernest B. Yeager - Proceedings of the International Symposium
CountryUnited States
CityOrlando, FL
Period10/12/0312/17/03

Fingerprint

Methanol
Oxidation
Catalysts
Electrocatalysts
Alloying
Fuel cells
Activation energy

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Jambunathan, K., Liu, R., Pan, L., Dickey, E., Shallenberger, J., Smotkin, E., & Mallouk, T. E. (2005). Electrocatalytic oxidation of methanol on high surface area unsupported catalysts. 108-120. Paper presented at Fundamental Understanding of Electrode Processes, in Memory of Professor Ernest B. Yeager - Proceedings of the International Symposium, Orlando, FL, United States.
Jambunathan, K. ; Liu, R. ; Pan, L. ; Dickey, E. ; Shallenberger, Jeffrey ; Smotkin, E. ; Mallouk, Thomas E. / Electrocatalytic oxidation of methanol on high surface area unsupported catalysts. Paper presented at Fundamental Understanding of Electrode Processes, in Memory of Professor Ernest B. Yeager - Proceedings of the International Symposium, Orlando, FL, United States.13 p.
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Jambunathan, K, Liu, R, Pan, L, Dickey, E, Shallenberger, J, Smotkin, E & Mallouk, TE 2005, 'Electrocatalytic oxidation of methanol on high surface area unsupported catalysts' Paper presented at Fundamental Understanding of Electrode Processes, in Memory of Professor Ernest B. Yeager - Proceedings of the International Symposium, Orlando, FL, United States, 10/12/03 - 12/17/03, pp. 108-120.

Electrocatalytic oxidation of methanol on high surface area unsupported catalysts. / Jambunathan, K.; Liu, R.; Pan, L.; Dickey, E.; Shallenberger, Jeffrey; Smotkin, E.; Mallouk, Thomas E.

2005. 108-120 Paper presented at Fundamental Understanding of Electrode Processes, in Memory of Professor Ernest B. Yeager - Proceedings of the International Symposium, Orlando, FL, United States.

Research output: Contribution to conferencePaper

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AU - Pan, L.

AU - Dickey, E.

AU - Shallenberger, Jeffrey

AU - Smotkin, E.

AU - Mallouk, Thomas E.

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AB - Fuel cells operating on methanol are gaining considerable attention as alternative power sources. One of the issues that needs to be resolved is finding better electrocatalysts for the oxidation of methanol. We are currently involved in the synthesis and the characterization of high surface area Pt-based binary, ternary and quaternary catalysts. Addition of Ru, Ir and Os as promoters for the oxidation of methanol is being investigated. Several material and electrochemical techniques were used to characterize the catalysts. Activation energies for methanol oxidation calculated at 0.4 V was between 25-28 kJ mol -1 at all the H 2 reduced catalysts considered in this work. This indicates that the oxidation mechanism of methanol at all the multi-component catalysts used in this study is probably similar. The H 2 reduced catalysts have better activities, low onset potentials and higher degree of alloying compared with the NaBH 4 reduced catalysts.

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Jambunathan K, Liu R, Pan L, Dickey E, Shallenberger J, Smotkin E et al. Electrocatalytic oxidation of methanol on high surface area unsupported catalysts. 2005. Paper presented at Fundamental Understanding of Electrode Processes, in Memory of Professor Ernest B. Yeager - Proceedings of the International Symposium, Orlando, FL, United States.