3D Binder-free Integrated Electrodes Prepared by Phase Separation and Laser Induction (PSLI) Method for Oxygen Electrocatalysis and Zinc–Air Battery

Yang Sha; Yudong Peng; Kun HuangLin LiZhu Liu

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3D Binder-free Integrated Electrodes Prepared by Phase Separation and Laser Induction (PSLI) Method for Oxygen Electrocatalysis and Zinc–Air Battery

机译：3D Binder-free Integrated Electrodes Prepared by Phase Separation and Laser Induction (PSLI) Method for Oxygen Electrocatalysis and Zinc–Air Battery

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Developing facile approaches to fit in large-scale fabrication of efficient anddurable catalytic electrodes is highly desirable for oxygen electrocatalysis andmetal–air batteries. Herein, a strategy based on phase separation and laserinduction is proposed to prepare 3D binder-free integrated electrodes (Ies).The phase separation between a polybenzimidazole (PBI) solution and acoagulation bath containing metal precursors occurs to form a 3D interconnectedporous catalyst precursor layer. After drying, Ies are obtained by laserinduction, which simultaneously converts PBI into hierarchically porous laserinducedgraphene (HPLIG) and reduces metal precursor to tiny nanoparticles.To demonstrate the versatility of this method, Ies with different HPLIG hybridcatalyst layers and substrates are fabricated. IE-NiFe/HPLIG and IE-Co/HPLIGusing carbon paper as a substrate exhibit superior oxygen evolution reaction(OER) and oxygen reduction reaction (ORR) performance respectively. FlexibleIE-NiCoFe/HPLIG with OER and ORR bifunctionality using carbon cloth asthe substrate is applied as an air cathode in rechargeable aqueous Zinc–airbatteries (ZABs) and provides a satisfactory power density of 163 mW cm~（?2） andcycling stability of 1800 h at 10 mA cm~（?2）. The electrode also endows solid ZABswith good flexibility. This work offers an industrially viable solution to thechallenge of rapid fabrication of Ies.

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来源
《Advanced energy materials》 |2022年第25期|2200906.1-2200906.11|共11页
作者
Yang Sha; Yudong Peng; Kun HuangLin LiZhu Liu;
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作者单位

Department of MaterialsSchool of Natural SciencesThe University of ManchesterOxford Road, Manchester M13 9PL, UK;

National Graphene InstituteThe University of ManchesterOxford Road, Manchester M13 9PL, UK,Department of Chemical Engineering and Analytical ScienceThe School of EngineeringThe University of ManchesterOxford Road, Manchester M13 9PL, UK;

Laser Processing Research CentreDepartment of MechanicalAerospace and Civil EngineeringThe School of EngineeringThe University of ManchesterOxford Road, Manchester M13 9PL, UK;

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integrated electrodes; laser induction; phase separation; oxygen electrocatalysts; zinc–air batteries;

3D Binder-free Integrated Electrodes Prepared by Phase Separation and Laser Induction (PSLI) Method for Oxygen Electrocatalysis and Zinc–Air Battery

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