Tin-based anode materials with well-designed architectures for next-generation lithium-ion batteries

Two-dimensional transition metal dichalcogenide hybrid materials for energy applications

Arrays of ZnO/MoS2 nanocables and MoS2 nanotubes with phase engineering for bifunctional photoelectrochemical and electrochemical water splitting

Fabricating MoS2 nanoflakes photoanode with unprecedented high photoelectrochemical performance and multi-pollutants degradation test for water treatment

Stable, fast and high-energy-density LiCoO2 cathode at high operation voltage enabled by glassy B2O3 modification

Photo-assisted electrocatalysis of CdSMoS2 hybrid for hydrogen evolution reaction: Morphology-dependent photoelectroactivity of p–n junction photocathode under bias potential

A series of carbon nanofiber-supported B2O3–SnOx glasses (0B2O3–SnOx/CNFs, 0.5B2O3–SnOx/CNFs, 1.5B2O3–SnOx/CNFs and 3B2O3–SnOx/CNFs) have been prepared by an electrospinning technique, and a subsequent stabilization and carbonization treatment. The amorphous B2O3–SnOx glass nanoparticles homogeneously dispersed in the carbon nanofibers (CNFs) matrix have been utilized as anode materials for lithium-ion batteries. The typical 1.5B2O3–SnOx/CNF nano hybrid anode material demonstrates the highest reversible capacity as well as superior cycling stability and rate performance by virtue of the special glass network structure of non-bridging oxygen (NBO: B–O⋯Sn) in the B2O3–SnOx glasses, which can not only buffer the large volume change of SnOx, but also prohibit the aggregation of Sn nanoparticles during the charge–discharge cycles.

Carbon nanofiber-supported B2O3–SnOx glasses as anode materials for high-performance lithium-ion batteries

The invention relates to a carbon nano fiber film and a preparation method thereof. The carbon nano fiber film contains carbon nano fibers and tin oxides, wherein the tin oxides are doped with phosphorus or boron; the nano grains of the tin oxides doped with phosphorus or boron are uniformly distributed inside the carbon fibers, and are in an amorphous state; the carbon nano fibers are interleaved mutually to form a net structure, and therefore, the technical problems that the carbon nano fibers are low in coulombic efficiency and large in capacity loss, the tin oxides are poor in conductivity and easy to agglomerate, and the like in the charge and discharge process of a battery are solved, and the carbon nano fiber film can be widely applied to the field of preparation of battery materials.

Carbon nano fiber film and preparation method thereof

We prepared CdS@MoS2 core–shell nanorod arrays using a hydrothermal method and a subsequent electrodeposition. The well-defined physical features of the nanorod array of CdS@MoS2 provide both possibilities of a reverse biased P region and a forward biased N region. The preparation conditions (such as the hydrothermal reaction time, deposition time and precursor concentrations) were investigated to optimize the structures of the CdS@MoS2 core–shells, and thereafter to explore their effects on the photoelectrocatalytic activity. Specifically, the thickness of the MoS2 shell and the length of the CdS nanorods can be controlled through the deposition time, hydrothermal reaction time and precursor concentrations. The characterization results indicated that the structure of the CdS@MoS2 core–shell (length of the rods or layers of the shell) markedly influences the adsorption of light, and the separation and transfer of photogenerated charge carriers. Different proportions of MoS2 will result in different biased regions, in which a reverse bias will be beneficial for the photocatalytic activity, and a forward bias will have the opposite effect. The results indicated that a large portion of MoS2 will provide the great possibility of having a reverse biased P region under cathodic polarization, whereas, a large portion of CdS favors the reverse biased N region under anodic polarization. Herein, both of the reverse biased regions, either P or N, improve the photocatalytic activity. This investigation offers direct evidence of the effect of a CdS@MoS2 core–shell structure, when used as a photocathode, on improving the photo- and electrocatalytic activity, highlighting the importance of a more rational use of CdS/MoS2 cathodes toward achieving enhanced electrocatalytic activity through photo-assistance.

Optimization of CdS@MoS2 core–shell nanorod arrays for an enhanced photo-response for photo-assisted electrochemical water splitting under solar light illumination

Qian Li

Papers

Photo-assisted electrocatalysis of CdSMoS2 hybrid for hydrogen evolution reaction: Morphology-dependent photoelectroactivity of p–n junction photocathode under bias potential

Carbon nanofiber-supported B2O3–SnOx glasses as anode materials for high-performance lithium-ion batteries

Carbon nano fiber film and preparation method thereof

Optimization of CdS@MoS2 core–shell nanorod arrays for an enhanced photo-response for photo-assisted electrochemical water splitting under solar light illumination