Co3O4-modified TiO2 nanotube arrays via atomic layer deposition for improved visible-light photoelectrochemical performance

A cobalt(ii)heteroarylalkenolate precursor for homogeneous Co3O4 coatings by atomic layer deposition

We present a robust approach to prepare conformal Co₃O₄ nanocoatings on high aspect ratio structures from a new cobalt metalorganic complex.

Loading of Co3O4 onto Pt-modified nitrogen-doped TiO2 nanocomposites promotes photocatalytic hydrogen production

Loading of Co₃O₄ onto a very low content (0.02 wt%) Pt-modified N–TiO₂ nanocomposite significantly promotes the efficiency of photocatalytic hydrogen production.

Efficient all p-type heterojunction photocathodes for photoelectrochemical water splitting

Co₃O₄ nanostructures with different morphologies are directly grown on an ITO substrate and Sb₂S₃ is loaded onto these to construct a Co₃O₄/Sb₂S₃ heterojunction, which is used as an all p-type photocathode for PEC water splitting for the first time.

Hierarchical Co@C Nanoflowers: Synthesis and Electrochemical Properties as an Advanced Negative Material for Alkaline Secondary Batteries

Hierarchical Co@C nanoflowers have been facilely synthesized via a simple route based on a low-temperature solid-phase reaction. The obtained hierarchical Co@C nanoflowers, each constructed of a number of nanosheets, display a three-dimensional architecture with an average grain size of about 300 nm. The electrochemical properties of the Co@C nanoflowers as the negative material for Ni/Co cells have been systemically researched. In particular, Co@C material exhibits high discharge-specific capacity and good cycling stability. The discharge-specific capacity of our Co@C-3 electrode can reach 612.1 mA h g(-1), and the specific capacity of 415.3 mA h g(-1) is retained at a current density of 500 mA g(-1) after 120 cycles, indicating its great potential for high-performance Ni/Co batteries. Interestingly, the as-synthesized Co@C electrode also exhibits favorable rate capability. These desirable properties can be attributed to porous pathways, which allow fast transportation of ions and electrons and easy accessibility to the electrolyte. The dominant electrochemical mechanism of Co@C can be attributed to the reduction-oxidation reaction between metallic cobalt and cobalt hydroxide in alkaline solution.

Tuning the morphology and composition of ultrathin cobalt oxide films via atomic layer deposition

Composition and morphology controllable cobalt oxide ultrathin film have been fabricated with ALD method on both planar and porous substrate.

C3N4-sensitized TiO2 nanotube arrays with enhanced visible-light photoelectrochemical performance

A C₃N₄-sensitized TiO₂ nanotube array-based photoanode was designed and fabricated via the in situ growth of C₃N₄ on the surface of TiO₂ nanotube, which shows stable and significantly improved PEC activity for the hydrogen generation under visible light irradiation.