Volume 9, Issue 7 2401874
Research Article

Pyridinic-N Seized Co in Biphasic Nanoarchitecture for Reversible Oxygen Electrocatalysis Enabling Longevous (>1200 h) Aqueous and Dual-Anion Kosmotropic Electrolyte Stabilized High Power Quasisolid-State Zn–Air Battery

Srijib Das

Srijib Das

Electric Mobility and Tribology Research Group, Council of Scientific and Industrial Research Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur, West Bengal, 713209 India

Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India

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Saikat Bolar

Saikat Bolar

School of Environmental Science and Engineering, Kochi University of Technology, Kochi, 782-8502 Japan

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Erakulan E. Siddharthan

Erakulan E. Siddharthan

Department of Physics, SRM University-AP, Amaravati, Andhra Pradesh, 522 240 India

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Arupjyoti Pathak

Arupjyoti Pathak

Department of Physics, SRM University-AP, Amaravati, Andhra Pradesh, 522 240 India

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Ranjit Thapa

Ranjit Thapa

Center for Computational and Integrative Sciences, SRM University-AP, Amaravati, Andhra Pradesh, 522 240 India

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Ujjwal Phadikar

Ujjwal Phadikar

Electric Mobility and Tribology Research Group, Council of Scientific and Industrial Research Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur, West Bengal, 713209 India

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Haradhan Kolya

Haradhan Kolya

Department of Housing Environmental Design, and Research Institute of Human Ecology, College of Human Ecology, Jeonbuk National University, Jeonju, Jeonbuk, 54896 Republic of Korea

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Chun-Won Kang

Chun-Won Kang

Department of Housing Environmental Design, and Research Institute of Human Ecology, College of Human Ecology, Jeonbuk National University, Jeonju, Jeonbuk, 54896 Republic of Korea

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Tapas Kuila

Tapas Kuila

Electric Mobility and Tribology Research Group, Council of Scientific and Industrial Research Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur, West Bengal, 713209 India

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Naresh Chandra Murmu

Naresh Chandra Murmu

Electric Mobility and Tribology Research Group, Council of Scientific and Industrial Research Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur, West Bengal, 713209 India

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Aniruddha Kundu

Corresponding Author

Aniruddha Kundu

Electric Mobility and Tribology Research Group, Council of Scientific and Industrial Research Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur, West Bengal, 713209 India

E-mail: [email protected]

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First published: 19 January 2025
Citations: 2

Abstract

Integration of different active sites by heterostructure engineering is pivotal to optimize the intrinsic activities of an oxygen electrocatalyst and much needed to enhance the performance of rechargeable Zn–air batteries (ZABs). Herein, a biphasic nanoarchitecture encased in in situ grown N-doped graphitic carbon (MnO/Co-NGC) with heterointerfacial sites are constructed. The density functional theory model reveals formation of lattice oxygen bridged heterostructure with pyridinic nitrogen atoms anchored Co species, which facilitate adsorption of oxygen intermediates. Consequently, the well-designed catalyst with accessible active sites, abundant oxygen vacant sites, and heterointerfacial coupling effects, simultaneously accelerate the electron/mass transfer and thus promotes the trifunctional electrocatalysis. The assembled aqueous ZAB delivers maximum power density of ≈268 mW cm−2 and a specific capacity of 797.8 mAh gzn−1 along with excellent rechargeability and extremely small voltage gap decay rate of 0.0007 V h−1. Further, the fabricated quasisolid-state ZAB owns a remarkable power density of 163 mW cm−2 and long cycle life, outperforming the benchmark air-electrode and many recent reports, underlining its robustness and suitability for practical utilization in diverse portable applications.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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