A core-shell structured design for enhanced supercapacitor performance: coating Ni(OH)/Fe(OH) over NiMoO nanofibers.

This paper presents the development of a high-performance hydroxide-based supercapacitor electrode material, achieved through an innovative preparation strategy that integrates one-dimensional NiMoO nanofibers with Ni(OH)/Fe(OH) nanostructures, forming a NiMoO@Ni(OH)/Fe(OH) composite electrode. This material boasts a high specific capacitance (1753 F g at 1 A g) along with exceptional rate capability. The performance enhancement stems from synergies: Ni(OH)/Fe(OH)'s high surface area boosts charge storage and NiMoO nanofibers stabilize the structure, preventing nanosheet agglomeration and preserving open spaces for ion diffusion.

A High-Rate and Long-Life Aqueous Rechargeable Mg-Ion Battery Based on an Organic Anode Integrating Diimide and Triazine.

Aqueous Mg-ion batteries (MIBs) lack reliable anode materials. This study concerns the design and synthesis of a new anode material - a π-conjugate of 3D-poly(3,4,9,10-perylenetracarboxylic diimide-1,3,5-triazine-2,4,6-triamine) [3D-P(PDI-T)] - for aqueous MIBs. The increased aromatic structure inhibits solubility in aqueous electrolytes, enhancing its structural stability.

Aqueous Calcium-Ion Battery Based on a Mesoporous Organic Anode and a Manganite Cathode with Long Cycling Performance.

Aqueous batteries have attracted increasing and extensive attention, owing to their high safety, low cost, and low toxicity. These factors have become increasingly important, given the current focus on the rapid development of green energy technologies. In particular, multivalent-ion batteries are emerging as alternatives to lithium-ion batteries.

High-Energy-Density Aqueous Magnesium-Ion Battery Based on a Carbon-Coated FeVO Anode and a Mg-OMS-1 Cathode.

Porous FeVO is prepared by hydrothermal method and further modified by coating with carbon to obtain FeVO /C with a hierarchical pore structure. FeVO /C is used as an anodic electrode in aqueous rechargeable magnesium-ion batteries. The FeVO /C material not only has improved electrical conductivity as a result of the carbon coating layer, but also has an increased specific surface area as a result of the hierarchical pore structure, which is beneficial for magnesium-ion insertion/deinsertion.