Oxygen vacancies and tailored redox activity encountered with NiCo2O4 nanostructures for promising applications in supercapacitor and water oxidation

Kumar, Shusheel; Tahira, Aneela; Bhatti, Adeel Liaquat; Bhatti, Muhammad Ali; Ujjan, Zaheer Ahmed; Aftab, Umair; Kumar, Sooraj; Al-Kahtani, Abdullah A.; Nafady, Ayman; Dawi, Elmuez; Emo, Mélanie; Vigolo, Brigitte; Infantes-Molina, Antonia; Ibupoto, Zafar Hussain

doi:10.1016/j.est.2023.109994

Journal of Energy Storage

2024

DOI: 10.1016/j.est.2023.109994

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Oxygen vacancies and tailored redox activity encountered with NiCo2O4 nanostructures for promising applications in supercapacitor and water oxidation

Shusheel Kumar,

Aneela Tahira,

Adeel Liaquat Bhatti

et al.

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Cited by 8 publications

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Screening Spinel Oxide Supports for RuO₂ to Boost Bifunctional Electrocatalysts for Advanced Zn–Air Batteries

Zou,

Lu,

et al. 2024

Adv Funct Materials

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The compositing strategy offers great potential in designing bifunctional oxygen electrocatalysts for Zn–air batteries. Recent reports reveal that the couple of RuO2, serving as a benchmark oxygen evolution reaction (OER) catalyst, with other oxygen reduction reaction (ORR) catalysts is a wise choice to build highly efficient bifunctional electrocatalysts. However, the design criteria for ORR and OER activities of RuO2‐based composite catalysts are still unclear. Herein, a series of transition metal (Fe, Co, Mn, and Ni)‐doped spinel oxides are designed to support RuO2 nanorods for exploring the reaction mechanism. Through advanced technology, it is considered that increasing the content and binding energy of Co3+ and enhancing the oxidation state of Ru4+ is an efficient strategy to promote ORR and OER activities for RuO2/Co‐based spinel oxide composite catalysts. It is found that coupling Mn‐doping Co3O4 (CMO) supports with RuO2 can induce the highest catalytic activities in ORR/OER and excellent performance in rechargeable Zn–air batteries. Operando electrochemical impedance spectroscopy and theoretical calculation further prove the synergistic effect between RuO2 and CMO supports originated from the oxygen overflow to overcome the large barrier for oxygen desorption on RuO2 during OER and oxygen adsorption on CMO supports during ORR.

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Screening Spinel Oxide Supports for RuO₂ to Boost Bifunctional Electrocatalysts for Advanced Zn–Air Batteries

Zou,

Lu,

et al. 2024

Adv Funct Materials

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A Novel Approach for Efficient Water Oxidation and Supercapacitor Applications Based on Morphologically Transformed, Surface Rich Oxygen Vacancies of Co3o4 Nanostructures Co-Synthesized with Potato Starch Peel Extract

Laghari,

Aftab,

Tahira

et al. 2024

J Clust Sci

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A free-standing ZnO@NiCo2O4 nanofilm for supercapacitors and zinc-ion batteries with high-rate performance and high energy density

Wang,

Li,

Liu

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Oxygen vacancies and tailored redox activity encountered with NiCo2O4 nanostructures for promising applications in supercapacitor and water oxidation

Cited by 8 publications

References 61 publications

Screening Spinel Oxide Supports for RuO₂ to Boost Bifunctional Electrocatalysts for Advanced Zn–Air Batteries

Screening Spinel Oxide Supports for RuO₂ to Boost Bifunctional Electrocatalysts for Advanced Zn–Air Batteries

A Novel Approach for Efficient Water Oxidation and Supercapacitor Applications Based on Morphologically Transformed, Surface Rich Oxygen Vacancies of Co3o4 Nanostructures Co-Synthesized with Potato Starch Peel Extract

A free-standing ZnO@NiCo2O4 nanofilm for supercapacitors and zinc-ion batteries with high-rate performance and high energy density

Contact Info

Product

Resources

About

Oxygen vacancies and tailored redox activity encountered with NiCo2O4 nanostructures for promising applications in supercapacitor and water oxidation

Cited by 8 publications

References 61 publications

Screening Spinel Oxide Supports for RuO2 to Boost Bifunctional Electrocatalysts for Advanced Zn–Air Batteries

Screening Spinel Oxide Supports for RuO2 to Boost Bifunctional Electrocatalysts for Advanced Zn–Air Batteries

A Novel Approach for Efficient Water Oxidation and Supercapacitor Applications Based on Morphologically Transformed, Surface Rich Oxygen Vacancies of Co3o4 Nanostructures Co-Synthesized with Potato Starch Peel Extract

A free-standing ZnO@NiCo2O4 nanofilm for supercapacitors and zinc-ion batteries with high-rate performance and high energy density

Contact Info

Product

Resources

About

Screening Spinel Oxide Supports for RuO₂ to Boost Bifunctional Electrocatalysts for Advanced Zn–Air Batteries

Screening Spinel Oxide Supports for RuO₂ to Boost Bifunctional Electrocatalysts for Advanced Zn–Air Batteries