As a promising bifunctional electrocatalyst for water splitting, NiFe-layered double hydroxide (NiFe LDH) demonstrates an excellent activity toward oxygen evolution reaction (OER) in alkaline solution. However, its hydrogen evolution reaction (HER) activity is challenged owing to the poor electronic conductivity and insufficient electrochemical active sites. Therefore, a three-dimensional self-supporting metal hydroxide/oxide electrode with abundant oxygen vacancies is prepared by electrodepositing CeO nanoparticles on NiFe LDH nanosheets. According to the density functional theory calculations and experimental studies, the oxygen vacancies at the NiFe LDH/CeO interface can be introduced successfully because of the positive charges accumulation resulting from the local electron potential difference between NiFe LDH and CeO . The oxygen vacancies accelerate the electron/ion migration rates, facilitate the charge transfer, and increase the electrochemical active sites, which give rise to an efficient activity toward HER in alkaline solution. Furthermore, NF@NiFe LDH/CeO needs a lower potential of 1.51 V to drive a current density of 10 mA cm in overall water splitting and demonstrates a superior performance compared with the benchmark Pt/C and RuO, which is indicated to be a promising bifunctional electrode catalyst.

A high-quality edge-enriched H-3DRG film coupled with vertically oriented electroactive inorganics for high performance asymmetric supercapacitors and OER.

Cu-Doped Co2P nanoparticles anchored on 2D heteroatom-doped ultrathin carbon exhibit excellent oxygen reduction reaction performance in flexible solid state zinc–air batteries.

13C NMR signals of PCF, PBF and PBCFs co-polyesters.

“Ethanol–water exchange” nanobubbles were utilized to produce hollow β-Mo2C/N-doped carbon nanospheres for use as an efficient hydrogen evolution electrocatalyst.

Controllable atomic engineering of N into 1T′-phase ReS2 regulates the electronic structure and leads to enhanced alkaline hydrogen evolution.

MoS2/Co9S8 heterostructures were in situ grown on three-dimensional carbon network substrates with interconnected hierarchical pores, exhibit excellent alkaline HER activity.

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