Low Temperature Synthesis of spinel-type CoxFe3-xO4 (0 ≤ x ≤ 1.5) Oxide and its Application for Oxygen Evolution Electrocatalysis in Alkaline Solution

被引:5
|
作者
Singh, Narendra Kumar [1 ]
Yadav, Manish Kumar [1 ]
Parihar, Reena [1 ]
Kumar, Indresh [1 ]
机构
[1] Univ Lucknow, Fac Sci, Dept Chem, Lucknow 226007, Uttar Pradesh, India
来源
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2020年 / 15卷 / 07期
关键词
Co-precipitation; spinel ferrites; XRD; oxygen evolution; thermodynamic parameters; SOL-GEL ROUTE; O-2; EVOLUTION; ELECTRODES; CO3O4; NI; NANOPARTICLES; SURFACE; COBALT; METAL; FILMS;
D O I
10.20964/2020.07.10
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Spinel-type Fe3O4 and its Co-substituted products were synthesized at 80 degrees C by a co-precipitation method and investigated for their electrocatalytic properties in the form of oxide film electrode on Ni-support towards oxygen evolution reaction (OER) in alkaline medium. X-ray diffraction study indicated the formation of almost pure spinel ferrite phase with some impurities, which is found basically in the case of Co0.5Fe2.5O4 oxide. The formation of spinel ferrite was also confirmed by recording the IR spectra. The cyclic voltammogram was carried out in the potential region 0.0 - 0.7 V and shows a pair of redox peaks; one an anodic (E-pa = 524 +/- 36) and corresponding cathodic (E-Pc = 351 +/- 6) peak prior to the onset of oxygen evolution reaction. The anodic polarization study showed that the substitution of Co for Fe in the Fe3O4 lattice strongly affects the electrocatalytic properties of the materials. The optimum improvement in the activity is being with 1.0 mol Co-substitution. At E = 850 mV vs Hg/HgO/1M KOH (25 degrees C), the current density with CoFe2O4 (j = 315.6 mA cm(-2)) oxide was about 13 time higher than Fe3O4. The Tafel slope values also decreased from 68 mV decade(-1) to 44 mV decade(-1) with Co-substitution. The thermodynamic parameters have been calculated for the oxide electrode, CoFe2O4, at different potentials. It appears that as the potential is increased, the electrochemical standard enthalpy of activation (Delta H-el degrees(#)) of the oxide is decreased. SE-micrograph indicates that the substitution of Co for Fe decreases the crystallite size of the materials.
引用
收藏
页码:6605 / 6619
页数:15
相关论文
共 45 条
  • [1] Electrocatalytic Properties of Sol-Gel Derived Spinel CoxFe3-xO4 (0 ≤ x ≤ 1.5) Electrodes for Oxygen Evolution in Alkaline Solution
    Yadav, Ritu
    Yadav, M. K.
    Singh, N. K.
    INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, 2013, 8 (05): : 6321 - 6331
  • [2] Low Temperature Synthesis and Characterization of NixFe3-xO4 (0≤x≤1.5) Electrodes for Oxygen Evolution Reaction in Alkaline Medium
    Yadav, Manish Kumar
    Gangwar, Chinky
    Singh, Narendra Kumar
    JOURNAL OF NEW MATERIALS FOR ELECTROCHEMICAL SYSTEMS, 2020, 23 (02) : 78 - 86
  • [3] Study on the formation of CoxFe3-xO4 system using two low temperature synthesis methods
    Vlazan, Paulina
    Stefanescu, Mircea
    Barvinschi, Paul
    Stoia, Marcela
    MATERIALS RESEARCH BULLETIN, 2012, 47 (12) : 4119 - 4125
  • [4] Magnetic properties of nanostructured CoxFe3-xO4 (0 < x < 0.2) thin films obtained by a low-temperature soft solution processing method
    Caruntu, Gabriel
    Newell, Adelle
    Caruntu, Daniela
    O'Connor, Charles J.
    Journal of Alloys and Compounds, 2007, 434-435 (SPEC. ISS.): : 637 - 640
  • [5] Magnetic properties of nanostructured CoxFe3-xO4 (0 &lt; x &lt; 0.2) thin films obtained by a low-temperature soft solution processing method
    Caruntu, Gabriel
    Newell, Adelle
    Caruntu, Daniela
    O'Connor, Charles J.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 434 : 637 - 640
  • [6] Photocatalytic activity of spinel ferrites CoxFe3-xO4 (0.25 < x < 1) obtained by treatment contact low-temperature non-equilibrium plasma
    Frolova, L.
    APPLIED NANOSCIENCE, 2020, 10 (12) : 4585 - 4590
  • [7] Electrocatalytic activities of nano-sized spinel-type CuxCo3-xO4 (0 ≤ x ≤ 1) for methanol oxidation in alkaline solutions
    Singh, R. N.
    Sharma, T.
    Singh, A.
    Anindita
    Mishra, D.
    INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, 2007, 2 (10): : 762 - 777
  • [8] New active spinel-type MxCo3-xO4 films for electro-catalysis of oxygen evolution
    Singh, JP
    Singh, RN
    JOURNAL OF NEW MATERIALS FOR ELECTROCHEMICAL SYSTEMS, 2000, 3 (02) : 137 - 145
  • [9] Peculiarities of the Crystal-Chemical Structure of Spinel Ferrites CoxFe3-xO4 (0.25 ≤ x ≤ 1) Obtained Under the Action of a Low- Temperature Contact Nonequilibrium Plasma
    Frolova, L. A.
    Pivovarov, O. A.
    Kushnerov, O. A.
    Tolstopalova, N. M.
    NANOCHEMISTRY, BIOTECHNOLOGY, NANOMATERIALS, AND THEIR APPLICATIONS, 2018, 214 : 79 - 87
  • [10] Oxygen evolution electrocatalysis in alkaline medium at thin MnxCo3-xO4 (0 ≤ x ≤ 1) spinel films on glass/SnO2:F prepared by spray pyrolysis
    Rios, E
    Chartier, P
    Gautier, JL
    SOLID STATE SCIENCES, 1999, 1 (05) : 267 - 277