Photovoltaic powered solar hydrogen production coupled with waste SO2 valorization enabled by MoP electrocatalysts

Park, Jaemin; Yoon, Hyunseok; Lee, Dong-Yeop; Ji, Su Geun; Yang, Wooseok; Tilley, S David; Sung, Myeong-Chang; Park, Ik Jae; Tan, Jeiwan; Lee, Hyungsoo; Kim, Jin Young; Kim, Dong-Wan; Moon, Jooho

doi:10.1016/j.apcatb.2021.121045

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Park, J., Yoon, H., Lee, D.-Y., Ji, S. G., Yang, W., Tilley, S. D., Sung, M.-C., Park, I. J., Tan, J., Lee, H., Kim, J. Y., Kim, D.-W., & Moon, J. (2022). Photovoltaic powered solar hydrogen production coupled with waste SO2 valorization enabled by MoP electrocatalysts. Applied Catalysis B: Environmental, 305, 121045. https://doi.org/10.1016/j.apcatb.2021.121045

Abstract

In this study, we demonstrated high-rate H2 generation by coupling with the sulfite oxidation reaction (SOR) as an alternative to the oxygen evolution reaction for solar H2 production. The emerging and cost-effective molybdenum phosphide electrocatalyst was appropriately optimized and used as a bifunctional catalyst in an alkaline electrolyte for both SOR and HER. Powered by state-of-the-art perovskite–Si tandem photovoltaics, a remarkable photocurrent density of over 17 mA cm−2 was achieved in the HER coupled with the SOR. In additio