Efficient direct seawater electrolysers using selective alkaline NiFe-LDH as OER catalyst in asymmetric electrolyte feeds. Issue 6 (27th May 2020)

• Record Type: Journal Article
• Authors: Dresp, Sören; Ngo Thanh, Trung; Klingenhof, Malte; Brückner, Sven; Hauke, Philipp; Strasser, Peter
• Is Part Of: Energy & environmental science. Volume 13:Issue 6(2020)
• Page Start: 1725
• Page End: 1729
• Publication Date: 2020-05-27
• Subjects: Energy conversion -- Periodicals; Fuel switching -- Periodicals; Environmental sciences -- Periodicals; Environmental chemistry -- Periodicals; 333.79
• DOI: 10.1039/d0ee01125h
• Languages: English
• ISSNs: 1754-5692

Abstract

Abstract : Increasing the performance of seawater electrolyser and enabling direct natural seawater feed by asymmetric electrolyte flow scheme. Abstract : Direct seawater electrolysis faces fundamental catalytic and process engineering challenges. Here we demonstrate a promising seawater electrolyser configuration using asymmetric electrolyte feeds. We further investigated the faradaic O2 efficiency of NiFe-LDH in alkalinized Cl − -containing electrolytes in comparison to commercial IrOx-based catalysts. Other than IrOx, NiFe-LDH prevents the oxidation of Cl − and appears highly selective for the oxygen evolution reaction in alkalinized seawater even at cell potentials beyond 3.0 Vcell .