Construction of ZnIn S /CdS/PdS S-Scheme Heterostructure for Efficient Photocatalytic H Production.

It is facing a tremendous challenge to develop the desirable hybrids for photocatalytic H generation by integrating the advantages of a single semiconductor. Herein, an all-sulfide ZnIn S /CdS/PdS heterojunction is constructed for the first time, where CdS and PdS nanoparticles anchor in the spaces of ZnIn S micro-flowers due to the confinement effects. The morphology engineering can guarantee rapid charge transfer owing to the short carrier migration distances and the luxuriant reactive sites provided by ZnIn S .

Defected tungsten disulfide decorated CdS nanorods with covalent heterointerfaces for boosted photocatalytic H generation.

Owing to their intrinsic and pronounced charge carrier transport when facing the formidable challenge of inhibiting severe surface charge recombination, one-dimensional (1D) CdS nanostructures are promising for advancing high-yield hydrogen production. We herein demonstrate an efficient strategy of boosting interfacial carrier separation by heterostructuring 1D CdS with defective WS. This process yields solid covalent interfaces for high flux carrier transfer that differ distinctively from those reported structures with physical contacts.

Enhanced electrochemical properties of potassium-doped lithium-rich oxide@carbon as cathode material for lithium-ion batteries.

Lithium-rich layered oxides are believed to be the most competitive cathode materials for next-generation lithium-ion batteries (LIBs) due to their high specific capacity, but the poor cycle stability and voltage attenuation severely limit their commercial applications. In this paper, a simple method combining surface treatment via pyrolysis of polyvinyl alcohol (PVA) and potassium ions (K) doping, is designed to improve the above defects of the cobalt-free Lithium-rich material LiMnNiO (LMR). The insoluble surface byproduct LiCO and amorphous carbon nanolayer derived from the pyrolysis process of PVA alleviate the corrosion of acidic species with a favorable conductivity, while a large radius of K can enlarge the space of the lithium (Li) layer to facilitate the diffusion of Li, suppress voltage polarization, and synchronously restrain the transformation from a layered structure to a spinel-like structure.

Improving electrochemical performances of Lithium-rich oxide by cooperatively doping Cr and coating LiPO as cathode material for Lithium-ion batteries.

Lithium-rich layered oxides exhibit one of the highest reversible discharge capacities among cathode materials for lithium-ion batteries. However, their voltage decay and poor cycle stability severely restrict their use as a commercial cathode material. In this work, a novel approach of that combines Cr doping and a LiPO coating was designed to address the problems associated with lithium-rich LiMnNiCoO materials.

Nonstoichiometry of Li-rich cathode material with improved cycling ability for lithium-ion batteries.

Lithium-rich layered oxides are considered as promising cathode materials for lithium-ion batteries due to its high capacity, but the rapid decay of capacity and operating voltage are great challenges to achieve its commercial application. In this work, the nonstoichiometry of Li-rich layered oxide LiMnNiO was designed by directly declining the Mn amounts in the form of LiMnNiO (x = 0.59, 0.