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.

BiVO _{4 光}阳极严重的表面电荷复合和疲劳的光生载流子转移限制了其光电化学（PEC）水分解性能。在这项工作中，氟化镍 (NiF ₂ ) 用于通过使用简便的电沉积方法改造纯 BiVO _{4 光}阳极。因此，与原始 BiVO ₄相比，所制备的 NiF ₂ /BiVO ₄光阳极显着增加了约 180% 的光电流密度光阳极。此外，由于NiF ₂和BiVO ₄的协同作用，相关的光子到电流转换效率、电荷注入和分离效率以及复合光阳极的产氢都得到了显着提高。这项研究可能为制造基于氟化物的化合物/半导体复合光阳极系统提供可靠的指导。