A5050207449- Graphene research and applications
- GaN-based semiconductor devices and materials
- ZnO doping and properties
- Advancements in Battery Materials
- Ga2O3 and related materials
- Electrocatalysts for Energy Conversion
- 2D Materials and Applications
- Semiconductor materials and devices
- Gas Sensing Nanomaterials and Sensors
- Metal and Thin Film Mechanics
- MXene and MAX Phase Materials
- Luminescence Properties of Advanced Materials
- Quantum and electron transport phenomena
- Boron and Carbon Nanomaterials Research
- Ferroelectric and Piezoelectric Materials
- Catalytic Processes in Materials Science
- Radical Photochemical Reactions
- Multiferroics and related materials
- Carbon Nanotubes in Composites
- Advanced Photocatalysis Techniques
- Metamaterials and Metasurfaces Applications
- Oxidative Organic Chemistry Reactions
- Magnetic and transport properties of perovskites and related materials
- Fuel Cells and Related Materials
- Catalytic C–H Functionalization Methods
Beijing University of Technology
2016-2025
Advanced Energy Materials (United States)
2022-2024
Advanced Materials and Devices (United States)
2024
Materials Science & Engineering
2020
Ministry of Education of the People's Republic of China
2020
Nanjing University
2013-2016
Beijing Computational Science Research Center
2012-2016
Taiyuan University of Technology
2016
State Key Laboratory of Analytical Chemistry for Life Science
2014
Chongqing University
2013
Abstract Considering the effect of both buffer layer and substrate, a series ultrathin multilayered structure cathodes (UTMC) is constructed to simulate field emission (FE) process nanostructured semiconductor film (NSFCs). We find generalized FE mechanism NSFCs, in which there are three distinct modes with change applied field. Our results clearly show significant differences between conventional emitters nanofilm emitters, non-Fowler-Nordheim characteristics resonant will be inevitable for...
Abstract Ultralong cycle life, high energy, and power density rechargeable lithium‐ion batteries are crucial to the ever‐increasing large‐scale electric energy storage for renewable sustainable road transport. However, commercial graphite anode cannot perform this challenging task due its low theoretical capacity poor rate‐capability performance. Metal oxides hold much higher but still plagued by rate capability serious degradation. Here, a novel strategy is developed prepare binder‐free...
Bring to light: The first visible-light-promoted somophilic isocyanide insertion occurs using an iridium photocatalyst. This efficient synthetic approach provides a rapid entry 6-alkylated phenanthridine derivatives (see scheme). reactions proceed at room temperature in good excellent yields with broad substrate scope and under environmentally friendly conditions. As service our authors readers, this journal supporting information supplied by the authors. Such materials are peer reviewed may...
Using a structural search method in combination with first-principles calculations, we found lots of low energy 2D carbon allotropes and examined all possible Dirac points around their Fermi levels. Three amazing have been discovered, named as S-graphene, D-graphene E-graphene. By analyzing the topology correlations among S-, T, net W graphene graphene, that general rule is valuable for constructing are keen to possess cones electronic structures. Based on this rule, successfully designed...
Cathodes of lithium-rich layered oxides for high-energy Li-ion batteries in electrically powered vehicles are attracting considerable attention by the research community. However, current is insufficient to account their complex reaction mechanism and application. Here, structural evolution lithium-manganese-rich at different temperatures during electrochemical cycling has been investigated thoroughly, stability designed. The results indicated structure conversion from two structures into a...
The direct hydrogen peroxide (H2O2) product from H2 and O2 is a promising anthraquinone replacement because it environmentally friendly has high atom efficiency. Experimental theoretical studies have proven that optimizing the adsorption of critical intermediate OOH* on metal site significantly promotes further protonation this inhibits O–O bond cleavage, thus enhancing activity selectivity. Redistributing charge density active sites to tuning d-band center could effectively modulate...
Photodegradable hydrogels that allow 3D encapsulation of cells are important biomaterials to modulate cellular microenvironments with temporal and spatial resolution. Herein we report a photodegradable hydrogel formed by the self-assembly short peptides modified novel phototrigger. The phototrigger is biaryl-substituted tetrazole moiety that, upon mild light irradiation, undergoes rapid intramolecular photoclick ligation form highly fluorescent pyrazoline moiety. Short linked...
A novel two-dimensional carbon allotrope, rectangular graphyne (R-graphyne) with tetra-rings and acetylenic linkages, is proposed by first-principles calculations. Although the bulk R-graphyne exhibits metallic property, nanoribbons of show distinct electronic structures from bulk. The most intriguing feature that band gaps oscillate between semiconductor states as a function width. Particularly, zigzag edge half-integer repeating unit cell exhibit unexpected Dirac-like fermions in...
The improved ionic conductivity (1.64 × 10(-4) S cm(-1) at room temperature) and excellent electrochemical stability of nanoporous β-Li3PS4 make it one the promising candidates for rechargeable all-solid-state lithium-ion battery electrolytes. Here, elastic properties, defect thermodynamics, phase diagram, Li(+) migration mechanism Li3PS4 (both γ β phases) are examined via first-principles calculations. Results indicate that both γ- phases ductile while γ-Li3PS4 is harder under volume change...
A synthetic strategy for multi-substituted isoquinoline derivatives has been developed using visible light-promoted vinyl isocyanide insertion with diaryliodonium salts at room temperature. The methodology presented here represents the first example of synthesis via somophilic insertion.
C<sub>3</sub>N has attracted much attention as an anode material for lithium-ion (Li-ion) batteries, owing to its excellent mechanical and electronic properties.
Abstract A strategy has been developed for the regiospecific synthesis of 1‐trifluoromethylisoquinoline derivatives. This is enabled by a photoredox vinyl isocyanide insertion with help Umemoto’s reagent. The methodology presented here provides an access to highly fuctionalized 1‐trifluoromethylisoquinolines regiospecifically under mild conditions in good‐to‐excellent chemical yields. detailed mechanism proposed, which supported experiments and theoretical calculations. magnified image
An Ir single atom catalyst supported by oxygen vacancy-modulated CoNiO 2 is constructed (Ir SA -V O -CoNiO ), in which the vacancy coupling with atoms facilitates participation of lattice oxygens OER.
Hafnium disulfide (HfS2) has attracted significant interest because of the predicted excellent electronic properties superior to group VIB transition metal dichalcogenides. On other hand, atomically thin hexagonal boron nitride (h-BN) is an ideal dielectric substrate for optoelectronic applications 2D materials. Here, first time, we report direct growth high-quality atomic layered HfS2 on few-layer h-BN transferred SiO2/Si substrates by chemical vapor deposition. It was found that layers are...
A practical approach for the synthesis of tetracyclic pyrroloquinazolines using photoredox strategy has been developed. The visible-light-promoted intramolecular single-electron-transfer process between photocatalyst and N-(2-iodobenzyl)-N-acylcyanamides is considered to be involved in this transformation. Targeted pyrroloquinazoline derivatives (15 examples) are presented good isolated yields (30%-88%).
Alloying transition metal dichalcogenides (TMDs) with different compositions is demonstrated as an effective way to acquire 2D semiconductors widely tunable bandgaps. Herein, for the first time, large-area synthesis of layered HfS2(1-x)Se2x alloys fully chemical on sapphire by vapor deposition reported, greatly expanding and enriching family TMDs semiconductors. The configuration high quality their crystal structure are confirmed various characterization techniques, bandgap these can be...
Deep learning has been an important topic in fault diagnosis of motor bearings, which can avoid the need for extensive domain expertise and cumbersome artificial feature extraction. However, existing neural networks have low recognition rates adaptability under variable load conditions. In order to solve these problems, we propose a one-dimensional fusion network (OFNN), combines Adaptive Convolution Neural Networks with Wide Kernel (ACNN-W) Dempster-Shafer (D-S) evidence theory. Firstly,...