Titanium-supported nanoporous palladium electrode(nanoPd /Ti) was prepared by a hydrothermal process in the presence of the ligand EDTA and using formaldehyde as reducing agent.SEM images showed that the size of Pd particles was about 60 nm and the Pd particles were connected with each other to form a three-dimensional network structure.Cyclic voltammetry(CV) and electrochemical impedance spectroscopy(EIS) were applied to evaluate the electrocatalytic activity of the nanoPd/Ti electrode towards methanol oxidation in alkaline solution.CV results showed that the nanoPd /Ti electrode presented high anodic peak densities and a low onset potential for methanol oxidation.Also nanoPd /Ti electrode showed excellent CO tolerance during the oxidation of methanol.Nyquist and Bode plots of electrochemical impedance showed that methanol electro-oxidation on the nanoPd /Ti exhibited low impedance values,and that with the increase of methanol concentrations,the impedance value for methanol electrooxidation decreaseed,indicating the significantly high electroactivity of the prepared nanoporous Pd electrode for methanol oxidation.


nanoporous Pd electrodes, methanol oxidation, electro-oxidation activity

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[1]Sundmacher K,Schultz T,Zhou S,et al.Dynamics of di-rect methanol fuel cell(DMFC):experiments and model-based analysis[J].Chem Engineering Scie,2001,56(2):333-341.

[2]Blum A,Duvdevani T,Philosoph M,et al.Water-neutralmicro direct-methanol fuel cell(DMFC)for portable ap-plications[J].J Power Sources,2003,117(1/2):22-25.

[3]Baglio V,Arico A S,Blasi Di,et al.Nafion-TiO2 com-posite DMFC membranes:physico-chemical properties ofthe filler versus electrochemical performance[J].Elec-trochimica Acta,2005,50(5):1241-1246.

[4]Hogarth M P,Hards G A.Direct methanol fuel cell[J].Platium Metals Rev,1996,40(4):150-152.

[5]Macak J M,Barczuk P J,Tsuchiya H,et al.Self-organ-ized nanotubular TiO2 matrix as support for dispersedPt/Ru nanoparticles:enhancement of the electrocatalyticoxidation of methanol[J].Electrochem Commun,2005,7(12):1417-1422.

[6]Choi Jong-ho,Jeong Kyoung-jin,Dong Yujung,et al.E-lectro-oxidation of methanol and formic acid on PtRuand PtAu for direct liquid fuel cells[J].J PowerSources,2006,163(1):71-75.

[7]Adzic R R,Avramov-Ivic M L,Tripkovic A V.Stucturaleffects in electrocatalysis:oxidation of formaldehyde ongold and platium single crystal electrodes in alkaline so-lution[J].Electrochim Acta,1984,29(10):1353-1357.

[8]Shen Peikang,Xu Changwei.Alcohol oxidation on nano-crystalline oxide Pd/C promoted electrocatalysts[J].Electrochem Commun,2006,8(1):184-188.

[9]Ha S,Larsen R,Masel R I.Performance characterizationof Pd/C nanocatalyst for direct formic acid fuel cells[J].J Power Sources,2005,144(1):28-34.

[10]Singh R N,Singh Anindita.Electrocatalytic activities ofbinary and ternary composite electrodes of Pd,nanocar-bon and Ni for electro-oxidation of methanol in alkalinemedium[J].J Solid Electrochem,2009,13(8):1259-1265.

[11]Jeremy K,William A,Goddard III.Oxidation of metha-nol on 2nd and 3rd row group VIII trasition metals(Pt,Ir,Os,Pd,Rh,and Ru):application to direct methanolfuel cells[J].J Am Chem Soc,1999,121(47):10928-10941.

[12]Lamy C,Lima A,LeRhun V,et al.Recent advances inthe development of direct alcohol fuel cells(DAFC)[J].J Power Source,2002,105(2):283-296.

[13]Zhang Kaifeng,Guo Daojun,Liu Xiang,et al.Vanadi-um oxide nanotubes as the support of Pd catalysts formethanol oxidation in alkaline solution[J].J PowerSources,2006,162(2):1077-1081.

[14]Sun Zhipeng,Zhang Xiaogang,Liu Ruili,et al.A sim-ple approach towards sulfonated multi-walled carbonnanotubes supported by Pd catalysts for methanol elec-tro-oxidation[J].J Power Sources,2008,185(2):801-806.

[15]Xu Changwei,Cheng Liqiang,Shen Peikang,et al.Me-thanol and ethanoloxidation on Pt and Pd supported oncarbon microsphospheres in alkaline media[J].Elec-trochemi commun,2007,9(5):997-1001.

[16]Yi Q F,Huang W,Liu X P,et al.Electroactivity of tita-nium-supported nanoporous Pd-Pt catalysts towards for-mic acid[J].J Electroana Chem,2008,619~620(15):197-205.

[17]Cao Chu-nan(曹楚南),Zhang Jian-qing(张鉴清).An introduction to electrochemical impedance spectros-copy[M].Beijing:Science Press,2002.81-83.



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