Efficient Tri-metallic Oxides NiCoO/CuO for the Oxygen Evolution Reaction

Overview

Journal RSC Adv

Publisher Royal Society of Chemistry

Specialty Chemistry

Date 2022 May 11

PMID 35542865

Authors

Abdul Qayoom Mugheri

Aneela Tahira

Umair Aftab

Adeel Liaquat Bhatti

Nusrat Naeem Memon

Jamil-Ur-Rehman Memon

Muhammad Ishaque Abro

Aqeel Ahmed Shah

Magnus Willander

Ahmed Ali Hullio

Zafar Hussain Ibupoto

Affiliations

Soon will be listed here.

Abstract

In this study, a simple approach was used to produce nonprecious, earth abundant, stable and environmentally friendly NiCoO/CuO composites for the oxygen evolution reaction (OER) in alkaline media. The nanocomposites were prepared by a low temperature aqueous chemical growth method. The morphology of the nanostructures was changed from nanowires to porous structures with the addition of CuO. The NiCoO/CuO composite was loaded onto a glassy carbon electrode by the drop casting method. The addition of CuO into NiCoO led to reduction in the onset potential of the OER. Among the composites, 0.5 grams of CuO anchored with NiCoO (sample 2) demonstrated a low onset potential of 1.46 V a reversible hydrogen electrode (RHE). A current density of 10 mA cm was achieved at an over-potential of 230 mV and sample 2 was found to be durable for 35 hours in alkaline media. Electrochemical impedance spectroscopy (EIS) indicated a small charge transfer resistance of 77.46 ohms for sample 2, which further strengthened the OER polarization curves and indicates the favorable OER kinetics. All of the obtained results could encourage the application of sample 2 in water splitting batteries and other energy related applications.

Citing Articles

Incorporation of Cu/Ni in Ordered Mesoporous Co-Based Spinels to Facilitate Oxygen Evolution and Reduction Reactions in Alkaline Media and Aprotic Li-O Batteries.

Priamushko T, Budiyanto E, Eshraghi N, Weidenthaler C, Kahr J, Jahn M ChemSusChem. 2021; 15(5):e202102404.

PMID: 34905292 PMC: 9303656. DOI: 10.1002/cssc.202102404.

Enhanced Electrochemical Properties and OER Performances by Cu Substitution in NiCoO Spinel Structure.

Park H, Park B, Choi J, Kim S, Kim T, Youn Y Nanomaterials (Basel). 2020; 10(9).

PMID: 32878224 PMC: 7558615. DOI: 10.3390/nano10091727.

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