Constructing oxygen vacancy-rich MXene @Ce-MOF composites for enhanced energy storage and conversion.

Oxygen vacancies can regulate the coordination structure and electronic states of atoms, thus promoting the formation of surface-active sites and increasing the conductivity of the electrode material. This work presents a design for MXene@Ce-MOF composites with abundant oxygen vacancies. The hydroxyl groups on the surface of monolayer MXene attract cerium ions, which create surface defects in Ce-MOF and further promote the formation of oxygen vacancies.

Electrochemical activation strategy assisted morphology engineering Co-Fe layered double hydroxides for oxygen hydrogen evolution and supercapacitor.

Regulating the intrinsic properties of the transition-metal layered double hydroxide (LDH) material is a promising strategy to improve the performance of oxygen evolution reaction (OER) and supercapacitor. Herein, a facile, low-cost and convenient electrochemical cyclic voltammetry (CV) activation strategy is reported. We demonstrate that electrochemical activation could regulate the morphology, crystal structure and electronic states of the Co-Fe layered double hydroxides (CoFe-LDH), thus significantly increasing the active site and electron transfer rate.

Molybdenum doped induced amorphous phase in cobalt acid nickel for supercapacitor and oxygen evolution reaction.

Reasonable structural design and metal-doping play significant roles in the optimization of electrochemical energy storage and conversion. Herein, in situ growth of Molybdenum-doped amorphous cobalt acid nickel nanoneedles on Ni foam (Mo-NiCoO/NF) has been successfully synthesized by a simple hydrothermal-annealing strategy. Benefiting from the unique hierarchical nanostructures and doping-optimized electronic structural configuration, the cross-link network structure of Mo-doped amorphous NiCoO with large specific surface areas exhibit excellent supercapacitor performance and electrocatalytic activity.