Abstract
Electrocatalysis of hydrogen and oxygen evolution is an essential route in performing renewable and sustainable energy alternatives. Although hydrogen technologies are largely advanced, the oxygen electrochemistry is mainly limited due to the complexity in seeking suitable and stable electrocatalysts, in unifying electrolytic conditions and hence sluggish reaction kinetics. Herein, we demonstrate the electrocatalytic activity of the nanofibrous cobalt oxide in alkaline oxygen evolution reaction with a generous operation lifetime of 120 hours. The unique and facile preparation pathway of fibers by electrospinning allows enlarged electrode networking and nanofibrous interaction thus leading to extended catalytically active surface area, imperative for well-performing electrolysis. Operating at low overpotential of 293 mV at a current density of 10 mA cm- 2, as well as low Tafel slope of 60.5 mVdec-1 in 1M KOH prove the efficient utilization of nanofibrous Co3O4 electrocatalyst towards oxygen evolution with an excellent long-term stability over 100 hours.[1][1] A.A., Long-Lasting Electrospun Co3O4 Nanofibers for Electrocatalytic Oxygen Evolution Reaction, ChemistrySelect 2020, 5, 748, doi.org/10.1002/slct.20.
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