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

Subject Areas : Polymer

Moein Mohseni ¹ , Fereshteh Chekin ² , Shahla Fathi ³

1 - Department of Chemistry, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
2 - Department of Chemistry, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
3 - Department of Chemistry, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran

Received: 2020-12-02 Accepted : 2020-12-02 Published : 2021-10-01

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Abstract :

Carbon nanotubes are of great interest due to their high surface area and rich edge sites, which are favorable for wide applications. Here, a simple and efficient routine is presented by decoration of multi-wall carbon nanotube (MWCNT) with nickel oxide (NiO) nanoparticles.The morphologies of NiO-MWCNT were investigated by using scanning electron microscope (SEM) and energydispersive X-ray spectroscopy (EDS). In alkaline media, the carbon paste electrode (CPE) modified with 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. After the long-termI-t measurement, high electrochemical stability confirms the improved electrocatalytic performance of NiO-MWCNT. This study affords us a NiO-MWCNT based electrocatalyst with high performance and strong durability under alkaline conditions, whichcan be applied to energy conversion and storage.