articleAdvanced Energy MaterialsFeb 8, 2024BRONZE OA

Energy‐Saving Hydrogen Production by Seawater Splitting Coupled with PET Plastic Upcycling

KLKesheng LiuXGXutao GaoCLChu‐Xuan LiuRSRui ShiECEdmund C. M. Tse

Chinese Academy of Sciences · Technical Institute of Physics and Chemistry · +3 more institutions

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Abstract

Abstract Direct seawater electrolysis presents a promising route for grid‐scale green hydrogen (H 2 ) production without reliance on scarce freshwater. However, it is severely hampered by high energy consumption (> 4.3–5.73 kWh m −3 H 2 ) and harmful chlorine corrosion. Herein, an energy‐saving and chlorine‐free H 2 production system by coupling seawater splitting and upcycling of polyethylene terephthalate (PET) waste into value‐added glycolic acid (GA) over a Pd─CuCo 2 O 4 catalyst is reported. An ultra‐low potential of 1.15 V versus RHE is required to achieve an industry‐level current density of 600 mA cm −2 , which reduces electricity cost to 2.45 kWh m −3 H 2 . Notably, this system maintains 1.6 A for…

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110
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21.02
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100%
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Authors

7

Topics & keywords

Topics
Keywords
  • Materials science
  • Water splitting
  • Seawater
  • Hydrogen production
  • Hydrogen
  • Production (economics)
  • Hydrogen fuel
  • Chemical engineering
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