18 Result(s)
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Open AccessUltralow-field magnetocaloric materials for compact magnetic refrigeration
Magnetic refrigeration around the liquid-helium temperature plays a critical role in many technological sectors. Even if gallium gadolinium garnet (GGG) has been regarded as the benchmark, its application is h...
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Hierarchical carbon/MoS2 composites as anodes for advanced electrochemical performance
Many advantages make MoS2 materials as promising anodes for lithium-ion batteries. However, the poor electronic conductivity and slow lithium-diffusion kinetic during the cycles hinder its wide application. In th...
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Characterization of zeolite/bioglass nanocomposites for surface coating of stainless steel material for bone implantation
This study was focused on the preparation and deposition of zeolite/bioglass nanocomposites on 316 stainless steel substrates by the electrophoretic technique. Transmission electron microscopy and X-ray diffra...
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Improved catalytic conversion of polysulfide by MoO2/C composite host for stable Li–S batteries
Lithium-sulfur batteries with high theoretical energy density have drawn much attention during the past decades, while the shuttle effect of the polysulfide also hinders the practical application. The employme...
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Hierarchical structure Carbon@Fe2O3 composites with improved cycle life for advanced electrochemical performance
The single component electrode materials suffer from rapid capacity fading during the electrochemical cycles. The electrochemical performance can be improved by using multi-component hybrid composites. In this...
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Engineering design of N-doped Co3O4 nanofibers as sulfur host for highly stable cathode materials
Lithium-sulfur batteries are the most promising green energy system due to their advantages, such as high energy density and environmental friendliness. It is known to all that a high stable sulfur reservoir i...
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Improved electrochemical performance of stannic oxide@C composites by regulating the charge transfer kinetics at the electrode/electrolyte interphase
Although the traditional graphite anode materials have stable cycle performance, it has low capacity which limits its energy density. Therefore, it is urgent to prepare new anode materials. During the past dec...
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Partially amorphous NiFe-based bimetallic hydroxide nanocatalyst for efficient oxygen evolution reaction
Exploring high-efficiency earth-abundant electrocatalysts facilitates advances in sustainable energy conversion and storage. Herein, partially amorphous NiFe hydroxide nanoparticles were synthesized via a faci...
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Titanium carbide nanosheets as sulfur hosts with excellent adsorption and electrocatalysis properties for advanced electrochemical performance
The rechargeable lithium-sulfur battery is an attractive energy storage device due to the high specific capacity and high energy density. The wide application of lithium-sulfur batteries, however, is hindered ...
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Layered ruthenium dioxide nanosheets as advanced sulfur host for high performance lithium-sulfur batteries
Lithium-sulfur batteries are considered as the promising energy storage systems due to their high specific capacity and energy density. However, there are still some obstacles to inhibit the practical employme...
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Ni(OH)2@hollow carbon spheres/sulfur composites as cathode materials for high-performance Li–S batteries
Hollow carbon spheres (HCS) with Ni(OH)2 nanoparticles loaded on their inner walls (NH@HCS) have been designed as sulfur host materials for the lithium–sulfur (Li–S) battery. The SiO2/Ni(OH)2@PDA composite is fir...
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Article
Indium-surfactant-assisted epitaxial growth of semi-polar \(\left(11\overline{2}2\right)\) plane Al0.42Ga0.58N films
The semi-polar \(\left(11\overline{2}2\right)\) ...
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The Effects of Negative Differential Resistance, Bipolar Spin-Filtering, and Spin-Rectifying on Step-Like Zigzag Graphene Nanoribbons Heterojunctions with Single or Double Edge-Saturated Hydrogen
In this study, we investigated the spin-resolved transport aspects of step-like zigzag graphene ribbons (ZGNRs) with single or double edge-saturated hydrogen using a method that combined the density functional...
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Negative differential resistance effect in similar right triangle graphene devices
In this work, nanojunctions consisting of two combined similar right triangle graphenes (SRTGs) bonded covalently with zigzag-edged graphene nanoribbon electrodes are designed, and their electron transport pro...
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Tuning electronic transport of zigzag graphene nanoribbons by ordered B or N atom do**
Calculations of electronic structures and transport properties of zigzag graphene nanoribbons (ZGNRs) by ordered do** of a column of boron (B) or nitrogen (N) atoms were conducted using density functional th...
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Vertex-Atom-Dependent Rectification in Triangular h-BNC/Triangular Graphene Heterojunctions
First-principles calculations have shown dramatically unexpected rectifying regularities in particular heterojunction configurations with triangular hexagonal boron-nitride-carbon (h-BNC) and triangular graphene ...
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Nitrogen Do** Position-Dependent Rectification of Spin-Polarized Current and Realization of Multifunction in Zigzag Graphene Nanoribbons with Asymmetric Edge Hydrogenation
The magnetic and spin transport properties of asymmetric edge-hydrogenated zigzag graphene nanoribbons (ZGNRs) selectively doped with nitrogen atoms were investigated using spin-polarized density functional th...
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Synthesis, characterization and catalytic property of manganese dioxide with different structures
In this paper, different crystallographic types and crystal morphologies of MnO2 nanomaterials have been selectively synthesized by a simple hydrothermal route. α-MnO2 nanowires, and γ-MnO2 hollow hierarchical sp...
