Nickel/Cobalt Molybdate Hollow Rods Induced by Structure and Defect Engineering as Exceptional Electrode Materials for Hybrid Supercapacitor.

Oxygen defects and hollow structures positively impact pseudocapacitive properties of diffusion/surface-controlled processes, a component of critical importance when building high-performance supercapacitors. Hence, we fabricated hollow nickel/cobalt molybdate rods with O-defects (D-H-NiMoO @CoMoO ) through a soft-template and partial reduction method, enhancing D-H-NiMoO @CoMoO 's electrochemical performance, yielding a specific capacitance of 1329 F g , and demonstrating excellent durability with 95.8 % capacity retention after 3000 cycles.

3D Hollow Flower-like CoWO Derived from ZIF-67 Grown on Ni-foam for High-Performance Asymmetrical Supercapacitors.

A three-dimensional (3D) hollow CoWO composite grown on Ni-foam (3D-H CoWO /NF) based on a flower-like metal-organic framework (MOF) is designed by utilizing a facile dipping and hydrothermal approach. The 3D-H CoWO /NF not only possesses large specific areas and rich active sites, but also accommodates volume expansion/contraction during charge/discharge processes. In addition, the unique structure facilitates fast electron/ion transport of 3D-H CoWO /NF.

A novel dual-tasking hollow cube NiFeO-NiCo-LDH@rGO hierarchical material for high preformance supercapacitor and glucose sensor.

Binary transition metal oxides as electroactive materials have continuously aroused grumous attention due to their high theoretical specific capacitance, high valtage window, and multiple oxidation states. However, the tiny specific surface area, poor conductivity and unsatisfactory cycle stability limit their practical application. Hence, a synthetic strategy is designed to fabricate a dual-tasking hollow cube nickel ferrite (NiFeO) - based composite (NiFeO-NiCo-LDH@rGO) with hierarchical structure.

Mo-Based crystal POMOFs with a high electrochemical capacitor performance.

Mo-Based crystalline polyoxometalate-based metal-organic frameworks (POMOFs), namely, [CuH(CHN)(PMoO)]·[(CHN)(HO)] (1) and [Cu(CHN)(PMoMoO)] (2) (CHN, 1,4-bis(triazol-1-ylmethyl) benzene, abbreviation btx) as promising capacitor electrode materials were synthesized by a hydrothermal reaction. Compound 1 consisted of two-dimensional (2D) lattice structures with free triethylamine (abbreviation, TEA) molecules and HO molecules, and compound 2 showed a 3D host-guest structure, in which 1D polyoxometalate (POM) chains were encapsulated into a 3D Cu(ii)-btx metal-organic framework (MOF). The compound 1-based electrode showed much higher specific capacitance (249.