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Abstract
Solar-powered photoelectrochemical hydrogen production has received garnered significant attention, yet the development of efficient, stable, and cost-effective photocathodes remains a formidable challenge. In this study, we achieved a breakthrough by fabricating a SiNWs@NC composite photocathode through a straightforward electrodeposition and calcination process. Notably, the incorporation of nitrogen-doped carbon as a co-catalyst not only facilitated efficient electron transfer within the photocathodes, but also serves as a protective layer, effectively mitigating the photocorrosion of SiNWs and enhancing overall stability. Under a bias voltage of −0.85 V vs. RHE and visible light irradiation, the SiNWs@NC electrode exhibited exceptional performance, achieving a peak photocurrent density of 25.41 mA·cm−2 and an ABPE efficiency and 8.8 %. This pioneering work presents a promising solution for photocatalytic hydrogen production, highlighting the advantages of its facile preparation, superior photovoltaic performance, and remarkable stability.
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