A highly active porous Pt-PbOx/C catalyst toward alcohol electro-oxidation in 
alkaline electrolyte

Li, Guanglan; Jiang, Luhua; Zhang, Bingsen; Jiang, Qian; Su, Dang Sheng; Sun, Gongquan

doi:10.1016/j.ijhydene.2013.07.076

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

A highly active porous Pt-PbO_x/C catalyst toward alcohol electro-oxidation in alkaline electrolyte

MPS-Authors

/persons/resource/persons22148

Su, Dang Sheng
Institute of Metal Research, Chinese Academy of Sciences;
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Li, G., Jiang, L., Zhang, B., Jiang, Q., Su, D. S., & Sun, G. (2013). A highly active porous Pt-PbO_x/C catalyst toward alcohol electro-oxidation in alkaline electrolyte. International Journal of Hydrogen Energy, 38(29), 12767-12773. doi:10.1016/j.ijhydene.2013.07.076.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0014-6119-3

Abstract

A highly active porous Pt–PbO_x/C composite toward alcohol (methanol, ethanol and ethylene glycol) oxidation in alkaline media is synthesized via a modified polyol method. The crystalline structure, morphology, elemental distribution and the chemical state of metals on surface of the Pt–PbO_x/C are evaluated by X-ray diffraction, high-resolution transmission electron microscopy and X-ray photoelectron spectroscopy. The large porous Pt–PbO_x/C composite are composed of both Pt and PbO_x primary nanoparticles of 1–2 nm which mixed geometrically with unchanged electronic environments of Pt and PbO_x. The potentiodynamic and potentiostatic measurements for alcohol electro-oxidation over Pt–PbO_x/C in alkaline media show that the activities toward C1–C2 alcohol electro-oxidation were improved remarkably compared to the commercial Pt/C due to both geometric effect, i.e., the addition of PbO_x to Pt provides steric hindrance for CO adsorption, and bi-functional effect, i.e., OH_ad species could be generated over PbO_x surface at lower potentials which facilitates the dehydrogenation of the intermediate methoxy.