Nat. Commun.: Hydrogen production using perovskite photocathode and lignocellulosic biomass

• Hydrogen production from solar energy is one of the ultimate technologies required for carbon neutral and sustainable society. However, the high-energy semi reaction of water oxidation and the poor performance of traditional inorganic photocatalysts have 
  

• Jungki Ryu, Ji Wook Jang and Sung Yeon Jang of Yushan National Institute of Science and Technology proposed a new type of photoelectrochemical cell. The high-performance organic inorganic halide perovskite is used as a panchromatic absorber, and lignocellulosic biomass is used as an alternative source of electrons working at low potential. Its photocurrent density reaches a record 19.8 mA cm − 2 for hydrogen production.
  

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• Hydrogen production using perovskite photocathode and lignocellulosic biomass
  

• In addition, value-added chemicals such as vanillin and acetylvanillin are produced by selective depolymerization of lignin in lignocellulosic biomass, while cellulose remains almost intact for further utilization. This research paves the way for improving the hydrogen production rate of solar energy and realizing the effective utilization of lignocellulosic biomass at the same time.
  

• Reference
  

  Choi, Y., Mehrotra, R., Lee, SH. et al. Bias-free solar hydrogen production at 19.8 mA cm−2 using perovskite photocathode and lignocellulosic biomass. Nat Commun 13, 5709 (2022).

  DOI: 10.1038/s41467-022-33435-1

  https://doi.org/10.1038/s41467-022-33435-1

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