Nanosheets of nickel, cobalt and manganese triple hydroxides/oxyhydroxides as efficient electrode materials for asymmetrical supercapacitors

An in situ method to fabricate thin nanosheets of Nickel, Cobalt and Manganese composite for charge storage applications is reported.

Mixed-Metal-Organic Framework Self-Template Synthesis of Porous Hybrid Oxyphosphides for Efficient Oxygen Evolution Reaction

Developing an efficient, stable yet cost-effective electrocatalyst is the key link along the path to hydrogen fuels produced by water splitting. The current bottleneck in the water electrolysis technology is the sluggish oxygen-evolving reaction (OER) which is also central to the rechargeable metal-air batteries. Herein, we report a promising mixed-metal-organic framework (MMOF) self-template strategy to synthesize CoFe hybrid oxyphosphides with highly porous morphology. Aided by the porous hybrid bulk structure beneficial to fast-ion diffusion to abundant highly active sites, the as-synthesized Co₃FeP_xO exhibited excellent electrocatalytic activity toward OER, with an overpotential of 291 mV at 10 mA cm^-2 and a low Tafel slope of 85 mV dec^-1. With the underpinnings of MMOF maintaining the structural rigidity and stability, the material also showed long life for OER without  discernible activity decay.

Synthesis and optical properties of mesoporous β-Co(OH)(2) /brilliant blue G (G250) hybrid hierarchical structures

New mesoporous β-Co(OH)(2) /brilliant blue G (G250) hybrid hierarchical structures constructed by thin mesocrystal nanosheets can be synthesized by a one-step refluxing process under the synergistic effect of CTAB and G250. This approach opens up an avenue to access new novel inorganic/dye hybrid materials with hierarchical structures for pigment and electrocatalytic application.