129 Result(s)
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Article
Phase modulation of nickel-tin alloys in regulating electrocatalytic nitrogen reduction properties
电催化氮还原反应(NRR)是在常规条件下合成氨(NH3)的一种有效方法,但其催化性能(例如:选择性、催化效率等)在很大程度上取决于催化剂的物理性质。在本工作中,物理性能可控的Ni-Sn 合金纳米粒子通过简单的两步法成功合成,并将其用作 NRR 的高效电催化剂。通过调控Ni : Sn的原子比例,分别构建了不同物相的Ni-Sn合金,包括:Ni、Ni-Ni3Sn、Ni3Sn、Ni3Sn2、Ni3Sn4和Sn,其中Ni3Sn合金...
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Achieving high carrier mobility and low lattice thermal conductivity in GeTe-based alloys by cationic/anionic co-do**
The IV–VI compound GeTe is considered as a promising alternative to the toxic PbTe for high-efficiency mid-temperature thermoelectric applications. However, pristine GeTe suffers from a high concentration of G...
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Article
Convenient room-temperature synthesis of sulfur and nitrogen co-doped NiCo-LDH coupled with CNTs on NiCo foam as battery-type electrode for high performance hybrid supercapacitor
The convenient synthesis of the composite electrode with high supercapacitance performance plays an important role in practical application but is challenging. Herein, the carbon nanotubes (CNTs) coupled with ...
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Efficient micrometer-scale thick-film perovskite solar cells with superior stability
It is essential to enhance the thickness of the absorber layer for perovskite solar cells (PSCs) to improve device performance and reduce industry refinement. However, thick perovskite films (> 1 μm) are diffi...
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Article
Dynamic manipulation of multimodal emission in Er3+-activated non-core–shell structure for optical thermometry and information security
Regulating luminescent dynamics of lanthanide-based luminescent materials via external stimuli is of great significance in the fields of optical thermometry and high-level anti-counterfeiting. However, it is s...
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Article
Honeycomb-like MoCo alloy on 3D nitrogen-doped porous graphene for efficient hydrogen evolution reaction
An efficient electrocatalyst is indispensable to significantly reduce energy consumption and accelerate the conversion efficiency of water splitting. In this work, the honeycomb-like porous MoCo alloy on nitro...
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Article
Engineering high-performance dielectric chiral shells with enhanced chiral fields for sensitive chiral biosensor
Chiral metamaterials have been a topic of significant research interest in recent years due to their potential for various applications in nanophotonic devices and chiral biosensors. However, the intrinsic Ohm...
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Article
Data-driven map**-relationship mining between hardness and mechanical properties of dual-phase titanium alloys via random forest and statistical analysis
In order to accelerate the research on the property optimization of titanium alloy based on high-throughput methods, it is necessary to reveal the relationship between hardness and other mechanical properties ...
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Article
Boost VS2 electrochemical reactive kinetics by regulating crystallographic planes and coupling carbon matrix for high performance sodium-ion storage
Vanadium disulfide (VS2) as a typical two-dimensional transition metal chalcogenide has excellent competitiveness for sodium-ion storage due to its wide layer spacing (0.575 nm), high theoretical capacity of 932 ...
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Article
Enhanced potassium storage of carbon nanofibers as binder-free anodes enabled by coupling ultra-small amorphous Sb2O3, graphene modification and sulfur do**
Considering the intrinsic advantages of natural copiousness and cost-effectiveness of potassium resource, potassium-ion batteries (KIBs) are booming as prospective alternatives to lithium-ion batteries (LIBs) ...
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Article
A bifunctional POM-based Cu-viologen complex with mixed octamolybdate clusters for rapid oxidation desulfurization and effective photogeneration of hydrogen
The design and synthesis of catalysts for the oxidation desulfurization and production of hydrogen are extremely important for solving environmental pollution and energy shortage. Herein, a novel bifunctional ...
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Article
Friction and wear properties of PM cam materials with different boron contents
In this study, effects of B addition on the sintering densification, microstructure, hardness, friction and wear properties of sintered Fe-2.4C-4Cr-1Mo-0.5P-0.7Si-2.5Cu (in wt%) were investigated. In spite of ...
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Controlled synthesis of monodispersed spherical ruthenium powders
Monodispersed spherical Ru powders are essential for fabricating high-performance Ru sputtering targets, which have applications in very-large-scale integration circuits and magnetic recording devices. However...
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Article
Efficient piezocatalytic activation of peroxydisulfate over Bi2Fe4O9: thickness-dependent synergy effect between peroxydisulfate activation and piezocatalysis
Piezocatalytic activation of persulfate (PS) has great application potential in environmental remediation; however, the relationship between piezocatalyst thickness and catalytic activity is not clear, limitin...
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Article
Development of UiO-66-NH2 and RuO2 composite-modified carbon fiber for highly sensitive sensing of ferulic acid
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Article
Effect of microstructure evolution on wear resistance of equal molar CoCrFeNi high-entropy alloy
Face-centered-cubic high-entropy alloys have excellent ductility and great potential for engineering applications. However, few studies have reported on the wear behavior under different loads. This study aime...
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Article
High-entropy alloys for accessing hydrogen economy via sustainable production of fuels and direct application in fuel cells
Heavy consumption of fossil fuels has raised concerns over the climate change and energy security in the past decades. In this review, hydrogen economy, as a clean and sustainable energy system, is receiving g...
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Two-dimensional MoS2/diamond based heterojunctions for excellent optoelectronic devices: current situation and new perspectives
Two-dimensional (2D) semiconductor molybdenum disulfide (MoS2) can be used as n-channel and is considered as a key candidate material to advance the promising development of optoelectronic device. The high therma...
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Article
Three-dimensional architecture using hollow Cu/C nanofiber interpenetrated with MXenes for high-rate lithium-ion batteries
Improving the electron/ion transport ability and alleviating expansion during charging/discharging processes are vital for lithium-ion batteries (LIBs). In this work, a three-dimensional anode was fabricated u...
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Phosphorus/nitrogen co-doped hollow carbon fibers enabling high-rate potassium storage
Potassium-ion hybrid capacitors (PIHCs) reconcile the advantages of batteries and supercapacitors, exhibiting both good energy density and high-power density. However, the low-rate performance and poor cycle s...