Nickel Oxide/Carbon Nanotubes as Active Hybrid Material for Oxygen Evolution Reaction

Carbon nanotubes are of great interest due to their high surface area and rich edge sites, which arefavorable for wide applications. here, a simple and efficient routine is presented by decoration ofmulti-wall carbon nanotube (mwcnt) with nickel oxide (nio) nanoparticles.the morphologies ofnio-mwcnt were investigated by using scanning electron microscope (sem) and energydispersivex-ray spectroscopy (eds). in alkaline media, the carbon paste electrode (cpe) modifiedwith nio-mwcnt catalyses oxygen evolution reaction (oer) with an onset potential of 0.61 v(vs. ag|agcl|kcl3m), showing a synergistic effect between mwcnt and nio nanoparticles.afterthe long-term i-tmeasurement, high electrochemical stability confirms the improved electrocatalyticperformance of nio-mwcnt. this study affords us a nio-mwcnt based electrocatalyst withhigh performance and strong durability under alkaline conditions, which can be applied to energyconversion and storage.