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Three-dimensional nanoflower–like hierarchical array of multifunctional copper cobaltate electrode as efficient electrocatalyst for oxygen evolution reaction and energy storage application
Year of publication 2020
Title of paper Three-dimensional nanoflower–like hierarchical array of multifunctional copper cobaltate electrode as efficient electrocatalyst for oxygen evolution reaction and energy storage application
Authors Yadav, A.A., Hunge, Y.M., Kulkarni, S.B., Terashima, C., and Kang, S.-W.
Volume 576
Pages 476 - 485
Journal Journal of Colloid and Interface Science (2019 I.F. = 7.489)
Link 관련링크 https://doi.org/10.1016/j.jcis.2020.04.100 186회 연결

The study deals with the hydrothermal growth of a CuCo2O4 hierarchical 3D nanoflower–like array on carbon cloth (CuCo2O4@CC), which is a useful multifunctional electrode. The electrocatalytic oxygen evolution reaction (OER) study of the CuCo2O4@CC electrode shows high durability and good activity in 1 M KOH. As an energy storage electrode, it shows a high specific capacitance of 1438 Fg−1 at 10 mA cm−2 in a 3 M KOH electrolyte. The electrochemical stability of the CuCo2O4@CC electrode was tested for 5000 cycles at 10 mA cm−2, and it showed 98.6% stability. This CuCo2O4@CC electrode produces a capacitance of 10 mA cm−2 at an overpotential of 288 mV for the OER, with a Tafel slope of 64.2 mV dev-1. The electrochemical stability measured at an overpotential of 292 mV for 12 h at 10 mA cm−2 shows good electronic stability in an alkaline medium. The enhanced electrochemical performance of the CuCo2O4@CC electrode may be due to the Cu and Co counterparts in addition to the high surface area. The CuCo2O4@CC electrode is a simple, flexible, and cost-effectivive electrode in both electrocatalytic OER and energy storage applications.