articleNano Research EnergyAug 12, 2022DIAMOND OA

Benzoate anions-intercalated NiFe-layered double hydroxide nanosheet array with enhanced stability for electrochemical seawater oxidation

LZLongcheng ZhangJLJie LiangLYLuchao YueKDKai DongJLJun Li

University of Electronic Science and Technology of China · Sichuan University · +3 more institutions

Indexed incrossrefdoaj

Abstract

Seawater electrolysis is an extremely attractive approach for harvesting clean hydrogen energy, but detrimental chlorine species (i.e., chloride and hypochlorite) cause severe corrosion at the anode. Here, we report our recent finding that benzoate anions-intercalated NiFe-layered double hydroxide nanosheet on carbon cloth (BZ-NiFe-LDH/CC) behaves as a highly efficient and durable monolithic catalyst for alkaline seawater oxidation, affords enlarged interlayer spacing of LDH, inhibits chlorine (electro)chemistry, and alleviates local pH drop of the electrode. It only needs an overpotential of 320 mV to reach a current density of 500 mA·cm–2 in 1 M KOH. In contrast to the fast activity decay of NiFe-LDH/CC…

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Topics & keywords

Topics
Keywords
  • Nanosheet
  • Electrolysis
  • Seawater
  • Hydroxide
  • Inorganic chemistry
  • Electrochemistry
  • Overpotential
  • Chlorine
UN Sustainable Development Goals
  • Life below water
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