Preparation and Properties of Binary Oxides Co_xCr_1-xO_3/2 Electrocatalysts for Oxygen Evolution Reaction

Authors

Tai-lai YANG, College of Chemistry and Chemical Eegineering, Taiyuan University of Technology, Taiyuan 030024, China;
Wen-yan DONG, College of Chemistry and Chemical Eegineering, Taiyuan University of Technology, Taiyuan 030024, China;
Hui-min YANG, College of Chemistry and Chemical Eegineering, Taiyuan University of Technology, Taiyuan 030024, China;
Li ZHANG, College of Chemistry and Chemical Eegineering, Taiyuan University of Technology, Taiyuan 030024, China;
Zhen-hai LIANG, College of Chemistry and Chemical Eegineering, Taiyuan University of Technology, Taiyuan 030024, China;Follow

Corresponding Author

Zhen-hai LIANG(liangzhenhai@tyut.edu.cn)

Abstract

Binary metal mixed oxides of Co and Cr with nominal compositional formulas, Co_xCr_1-xO_3/2 (x=0, 0.2, 0.4, 0.6, 0.8 and 1.0), were obtained by thermal decomposition method. The morphologies, crystal forms and valence states of the catalyst powders were analyzed by SEM, XRD and XPS, respectively. And the electrochemical properties, overpotentials and stabilities of Co_xCr_1-xO_3/2 electrodes for oxygen evolution reaction (OER) in an alkaline solution were evaluated by linear sweep voltammetry (LSV), staircase voltammetry and chronoamperometry, respectively. The results indicated that the mixtures of Co₃O₄ and eskolaite-Cr₂O₃ formed solid solutions of Co_xCr_1-xO_3/2. When x=0.2, the electrocatalytic performance of Co_0.2Cr_0.8O_3/2 catalyst was better than those of Co₃O₄ and Cr₂O₃. At high potential region (1.0 V vs. Ag/AgCl), the current density of Co_0.2Cr_0.8O_3/2 catalyst was 3.75 times higher than that of Co₃O₄ and 15.2 times higher than that of Cr₂O₃. Furthermore, the overpotential of Co_0.2Cr_0.8O_3/2 catalyst (η = 0.0703 V at a current density of 1×10^-3 A·cm^-2) was much lower than those of Co₃O₄ (η = 0.6109 V) and Cr₂O₃ (η = 0.4350 V), showing the best electrocatalytic property. In addition, the Co_0.2Cr_0.8O_3/2 catalyst had good stability in strong alkaline solution (pH = 13) during OER process.

Graphical Abstract

Keywords

thermal decomposition, binary oxides, oxygen evolution reaction, electrochemical performance

DOI Link

https://doi.org/10.13208/j.electrochem.141030

Publication Date

2015-04-28

Online Available Date

2015-04-23

Revised Date

2015-01-04

Received Date

2014-10-30

Recommended Citation

Tai-lai YANG, Wen-yan DONG, Hui-min YANG, Li ZHANG, Zhen-hai LIANG. Preparation and Properties of Binary Oxides Co_xCr_1-xO_3/2 Electrocatalysts for Oxygen Evolution Reaction[J]. Journal of Electrochemistry, 2015 , 21(2): 187-192.
DOI: 10.13208/j.electrochem.141030
Available at: https://jelectrochem.xmu.edu.cn/journal/vol21/iss2/13

References

[1] Zhuo J Q, Wang T Y, Zhang G, et al. Salts of C60(OH)8 electrodeposited onto a glassy carbon electrode: Surprising catalytic performance in the hydrogen evolution reaction[J]. Angewandte Chemie-International Edition, 2013, 125(10): 11067-11070.
[2] Bajdich M, García-Mota M, Vojvodic A, et al. Theoretical investigation of the activity of cobalt oxides for the electrochemical oxidation of water[J]. Journal of the American Chemical Society, 2013, 135(9): 13521-13530.
[3] Robinson D M, Go Y B, Mui M, et al. Photochemical water oxidation by crystalline polymorphs of manganese oxides: Structural requirements for catalysis[J]. Journal of the American Chemical Society, 2013, 135(3): 3491-3501.
[4] Zhuang Z B, Sheng W C, Yan Y S. Synthesis of monodispere Au@Co3O4 core-shell nanocrystals and their enhanced catalytic activity for oxygen evolution reaction[J]. Advanced Materials, 2014, 26(6): 3950-3955.
[5] Grewe T, Deng X H, Weidenthaler C, et al. Design of ordered mesoporous composite materials and their electrocatalytic activities for water oxidation[J]. Chemistry of Materials, 2013, 25(12): 4926-4935.
[6] Liu X J, Chang Z, Luo L, et al. Hierarchical ZnxCo3-xO4 nanoarrays with high activity for electrocatalytic oxygen evolution[J]. Chemistry of Materials, 2014, 26(3): 1889-1895.
[7] Bai B Y, Arandiyan H, Li J H. Comparison of the performance for oxidation of formaldehyde on nano-Co3O4, 2D-Co3O4, and 3D-Co3O4 catalysts[J]. Applied Catalysis B: Environmental, 2013, 142(10): 677-683.
[8] Cruz-Espinoza A, Ibarra-Galván V, López-Valdivieso A, et al. Synthesis of microporous eskolaite from Cr(VI) using activated carbon as a reductant and template[J]. Journal of Colloid and Interface Science, 2012, 374(5): 321-324.
[9] Zhang Y M, Yang S, Evans J R G. Revisiting Hume-Rothery’s rules with artificial neural networks[J]. Acta Materialia, 2008, 56(3): 1094-1105.
[10] Chen Z L, Chen S H, Li Y H, et al. A recyclable and highly active Co3O4 nanoparticles/titanate nanowire catalyst for organic dyes degradation with peroxymonosulfate[J]. Materials Research Bulletin, 2014, 57(9): 170-176.
[11] Gao S J, Dong C F, Luo H, et al. Scanning electrochemical microscopy study on the electrochemical behavior of CrN film formed on Co3O4 stainless steel by magnetron sputtering[J]. Electrochimica Acta, 2013, 114(12): 233-241.
[12] Keav S, Lu Y, Matam S K, et al. Chromium-induced deactivation of a commercial honeycomb noble metal-based CO oxidation catalyst[J]. Applied Catalysis A: General, 2014, 469(1): 259-266.
[13] Li X B, Yang S W, Sun J, et al. Enhanced electromagnetic wave absorption performances of Co3O4 nanocube/reduced graphene oxide composite[J]. Synthetic Metals, 2014, 194(8): 52-58.
[14] Wu Z S, Ren W C, Wen L, et al. Hydrothermal synthesis, structural characteristics, and enhanced photocatalysis of SnO2/alpha-Fe2O3 semiconductor nanoheterostructures[J]. ACS Nano, 2010, 4(2): 3187-3194.
[15] Chen S, Zhai T, Lu X H, et al. Large-area manganese oxide nanorod arrays as efficient electrocatalyst for oxygen evolution reaction[J]. International Journal of Hydrogen Energy, 2012, 37(9): 13350-13354.
[16] Zou X X, Goswami A, Asefa T. Efficient noble metal-free (electro)catalysis of water and alcohol oxidations by zinc-cobalt layered double hydroxide[J]. Journal of the American Chemical Society, 2013, 135(11): 17242-17245.
[17] Zhao Q, Yu Z B, Yuan W, et al. Metal-Ci oxygen-evolving catalysts generated in situ in a mild H2O/CO2 environment[J]. International Journal of Hydrogen Energy, 2013, 38(5): 5251-5258.
[18] Yu Z B, Zhao Q, Hao G Y, et al. A mild H3BO3 environment for water splitting[J]. International Journal of Hydrogen Energy, 2013, 38(8): 10191-10195.
[19] Zhao Q, Yu Z B, Yuan W, et al. A WO3/Ag-Bi oxygen-evolution catalyst for splitting water under mild conditions[J]. International Journal of Hydrogen Energy, 2012, 37(9): 13249-13255.
[20] Wang W, Zhao Q, Dong J X, et al. A novel silver oxides oxygen evolving catalyst for water splitting[J]. International Journal of Hydrogen Energy, 2011, 36(7): 7374-7380.
[21] Xu C W, Wang H, Shen P K, et al. Highly ordered Pd nanowire arrays as effective electrocatalysts for ethanol oxidation in direct alcohol fuel cells[J]. Advanced Materials, 2007, 19 (13): 4256-4259.