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2021, Volume 15, Issue 3

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Frontiers in Energy >> 2021, Volume 15, Issue 3 doi: 10.1007/s11708-021-0781-9

Enhanced performance of NiF/BiVO photoanode for photoelectrochemical water splitting

Received: 2021-03-12 Accepted: 2021-10-09 Available online: 2021-09-15
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Abstract

The serious surface charge recombination and fatigued photogenerated carriers transfer of the BiVO4 photoanode restrict its photoelectrochemical (PEC) water splitting performance. In this work, nickel fluoride (NiF2) is applied to revamp pure BiVO4 photoanode by using a facile electrodeposition method. As a result, the as-prepared NiF2/BiVO4 photoanode increases the dramatic photocurrent density by approximately 180% compared with the pristine BiVO4 photoanode. Furthermore, the correlative photon-to-current conversion efficiency, the charge injection, and the separation efficiency, as well as the hydrogen generation of the composite photoanode have been memorably enhanced due to the synergy of NiF2 and BiVO4. This study may furnish a dependable guidance in fabricating the fluoride-based compound/semiconductor composite photoanode system.

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