Dispersed cobalt oxide on non-conductive zeolite assembly for electrocatalytic water splitting

Electrochemical water splitting has been undergoing wide investigations due to their significance toward economic production of green hydrogen. Cobalt oxide catalysts are prepared via two different synthesis methods, and these bulk oxides are characterized and studied for water splitting reaction in alkaline medium. Further, similar supported catalysts are prepared using zeolites as support materials. All the samples are characterized using N₂ adsorption X-ray diffraction, electron microscopic morphology, temperature programed reduction using hydrogen, etc., and the results are discussed. The performance of cobalt and cobalt-based zeolite hybrid electrocatalyst toward water splitting. Both oxygen and hydrogen evolutions were investigated. The hybrid materials were prepared chemically using co precipitation and direct calcination protocols. The prepared electrocatalyst proved to have low overpotential, high current density, high electrochemical surface area, and enhanced hydrogen/oxygen evolution performance. Graphical Abstract: [Figure not available: see fulltext.].