Geology

Nanotechnology

Electrode

Organic chemistry

Seawater

Sulfide

Electrocatalyst

Nickel

Photocatalysis

Oceanography

Engineering

Catalysis

Physical chemistry

Inorganic chemistry

Chemistry

Metallurgy

Materials science

Bifunctional

Nickel sulfide

Water splitting

Chemical engineering

Nanosheet

Electrochemistry

Journal of Materials Chemistry A

NiFeS nanosheet array on Ni foam (NiFeS/NF) behaves as a superb bifunctional electrocatalyst for overall seawater splitting, attaining a commercially demanded current density of 500 mA cm −2 at a low cell voltage of 1.85 V with robust stability.

High-efficiency overall alkaline seawater splitting: using a nickel–iron sulfide nanosheet array as a bifunctional electrocatalyst