Hydrothermally Grown Dual‐Phase Heterogeneous Electrocatalysts for Highly Efficient Rechargeable Metal‐Air Batteries with Long‐Term Stability

Chandran Balamurugan; Changhoon Lee; Kyusang Cho; Jehan Kim; Byoungwook Park; Yusin Pak; Jaemin Kong; Sooncheol Kwon

doi:10.1002/advs.202203663

journal article·2022-11Open access

Hydrothermally Grown Dual‐Phase Heterogeneous Electrocatalysts for Highly Efficient Rechargeable Metal‐Air Batteries with Long‐Term Stability

Chandran Balamurugan, Changhoon Lee, Kyusang Cho, Jehan Kim, Byoungwook Park, Yusin Pak, Jaemin Kong, Sooncheol Kwon

Advanced Science· Volume 9· Issue 32

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Source abstract

Abstract

Abstract Metal‐air batteries as alternatives to the existing lithium‐ion battery are becoming increasingly attractive sources of power due to their high energy‐cost competitiveness and inherent safety; however, their low oxygen evolution and reduction reaction (OER/ORR) performance and poor operational stability must be overcome prior to commercialization. Herein, it is demonstrated that a novel class of hydrothermally grown dual‐phase heterogeneous electrocatalysts, in which silver‐manganese (AgMn) heterometal nanoparticles are anchored on top of 2D nanosheet‐like nickel vanadium oxide (NiV₂O₆), allows an enlarged surface area and efficient charge transfer/redistribution, resulting in a bifunctional OER/ORR superior to those of conventional Pt/C or RuO₂. The dual‐phase NiV₂O₆/AgMn catalysts on the air cathode of a zinc‐air battery lead to a stable discharge–charge voltage gap of 0.83 V at 50 mA cm⁻², with a specific capacity of 660 mAh g⁻¹ and life cycle stabilities of more than 146 h at 10 mA cm⁻² and 11 h at 50 mA cm⁻². The proposed new class of dual‐phase NiV₂O₆/AgMn catalysts are successfully applied as pouch‐type zinc‐air batteries with long‐term stability over 33.9 h at 10 mA cm⁻².

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Research context

Energy storage Nanomaterials Catalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Advancements in Battery Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Energy and Materials Engineering Dongguk University‐Seoul Seoul 04620 Republic of Korea

Heeger Center Advanced Materials (HCAM) Gwangju Institute of Science and Technology (GIST) Gwangju 500‐712 Republic of Korea

Max Planck POSTECH Center for Complex Phase of Materials Pohang University of Science and Technology Pohang 37673 Korea

Research Institute for Solar and Sustainable Energies (RISE) Gwangju Institute of Science and Technology (GIST) Gwangju 500‐712 Republic of Korea

Pohang Accelerator Laboratory Pohang University of Science and Technology Pohang 37673 Republic of Korea

Division of Advanced Materials Korea Research Institute of Chemical Technology Daejeon 305‐600 Republic of Korea

Sensor System Research Center (SSRC) Korea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea

Department of Physics Gyeongsang National University Jinju 52828 Republic of Korea

Funding

National Research Foundation of Korea

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