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

نویسندگان

چکیده

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

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ژورنال

عنوان ژورنال: Advanced Energy Materials

سال: 2022

ISSN: ['1614-6832', '1614-6840']

DOI: https://doi.org/10.1002/aenm.202200906