Corresponding Author

Yan-xia CHEN(yachen@ustc.edu.cn)


Oxygen reduction reaction (ORR) on glycin (NH2CH2COOH) modified Pt(111) electrode has been investigated using hanging meniscus rotating disk electrode system (HMRD) in 0.05 mol•L-1 H2SO4 and 0.1 mol•L-1 HClO4 solutions, respectively. Cyclic voltammograms of the glycin modified Pt (111) electrode measured in 0.05 mol•L-1 H2SO4 solution similar to that of CN- modified Pt(111) electrodes, demonstrating that sulfate adsorption is strongly inhibited at the glycin modified Pt(111). From the polarization curve of ORR recorded in 0.05 mol•L-1 H2SO4 solution, it is found that the ORR activity at the glycin modified Pt (111) is greatly enhanced with the half wave potential (E1/2) of ORR being shifted ca. 0.1 V positively, which is close to the activity of ORR at the unmodified Pt(111) in 0.1 mol•L-1 HClO4 solution. The improved ORR activity is explained by geometric effect due to the formation of well organized CN- adlayer at Pt(111) from the oxidative decomposition of glycin, which effectively inhibits the adsorption of sulfate anions.

Graphical Abstract


Pt(111) electrode, oxygen reduction reaction, NH2CH2COOH modified electrode, geometric effect

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[1] Carrette L, Friedrich K A, Stimming U. Fuel cells: Principles, types, fuels, and applications[J].Chemphyschem, 2000, 1(4): 162-193.

[2] Kinoshita K. Electrochemical oxygen technology[M]. New York: Wiley, 1992.

[3] Ross P N. Oxygen reduction reaction on the single crystal electrodes[M]//Vielstich W, Lamn A, Gasteiger H A (Eds.). Handbook of Fuel Cells: Fundamentals, Technology, Applications. New York: Wiley, 2003, 2: 465-480.

[4] Gottesfeld S. Electrocatalysis of Oxygen Reduction in Polymer Electrolyte Fuel Cells: A Brief History and a Critical Examination of Present Theory and Diagnostics[M]//Koper M T M (Eds.). Fuel Cell Catalysis: A Surface Science Approach. Chichester: Wiley&Sons, 2009: 1-30.

[5] Strmcnik D, Escudero-Escribano M, Kodama K, et al. Enhanced electrocatalysis of the oxygen reduction reaction based on patterning of platinum surfaces with cyanide[J]. Nature Chemistry, 2010, 2(10): 880-885.

[6] Clavilier J, Armand D, Sun S G, et al. Electrochemical adsorption behavior of platinum stepped surfaces in sulfuric-acid-solutions[J]. Journal of Electroanalytical Chemistry, 1986, 205(1/2): 267-277.

[7] Clavilier J, Faure R, Guinet G, et al. Preparation of mono-crystalline Pt microelectrodes and electrochemical study of the plane surfaces cut in the direction of the (111) and (110) planes[J]. Journal of Electroanalytical Chemistry, 1980, 107(1): 205-209.

[8] Clavilier J. Role of anion on the electrochemical-behavior of a (111) platinum surface-unusual splitting of the voltammogram in the hydrogen region[J]. Journal of Electroanalytical Chemistry, 1980, 107(1): 211-216.

[9] Markovic N M, Adzic R R, Cahan B D, et al. Structural effects in electrocatalysis: Oxygen reduction on platinum low index single-crystal surfaces in perchloric acid solutions[J]. Journal of Electroanalytical Chemistry, 1994, 377(1/2): 249-259.

[10] Markovic N M, Gasteiger H, Ross P N. Kinetics of oxygen reduction on Pt(hkl) electrodes: Implications for the crystallite size effect with supported Pt electrocatalysts[J]. Journal of The Electrochemical Society, 1997, 144(5): 1591-1597.

[11] Wang J X, Markovic N M, Adzic R R. Kinetic analysis of oxygen reduction on Pt(111) in acid solutions: Intrinsic kinetic parameters and anion adsorption effects[J]. The Journal of Physical Chemistry B, 2004, 108(13): 4127-4133.

[12] Markovic N M, Gasteiger H A, Ross P N. Oxygen reduction on platinum low index single crystal surfaces in sulfuric acid solution-rotating ring-Pt (HKL) disk studies[J]. Journal of Physical Chemistry, 1995, 99(11): 3411-3415.

[13] Villullas H M, Teijelo M L. The hanging meniscus rotating-disk (HMRD) .1. Dependence of hydroynamic behavior on experimental variables[J]. Journal of Electroanalytical Chemistry, 1995, 384(1/2): 25-30.

[14] Villullas H M,Teijelo M L. The hanging meniscus rotating-disk(HMRD). 2 Application to simple charge transfer reaction kinetics [J]. Journal of Electroanalytical Chemistry, 1995, 385(1): 39-44.

[15] Hsueh K L, Gonzalez E R, Srinivasan S. Electrolyte effects on oxygen reduction kineticss at platinum-a rotating-ring disk electrode analysis [J]. Electrochimica Acta, 1983, 28(5): 691-697.

[16] Huerta F, Morallon E, Cases F, et al. Electrochemical behaviour of amino acids on Pt(h,k,l): A voltammetric and in situ FTIR study .1. Glycine on Pt(111) [J]. Journal of Electroanalytical Chemistry, 1997, 421(1/2): 179-185.



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