A5055674949- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Advanced Thermoelectric Materials and Devices
- MXene and MAX Phase Materials
- 2D Materials and Applications
- Advanced Photocatalysis Techniques
- Ga2O3 and related materials
- Copper-based nanomaterials and applications
- Advanced battery technologies research
- Extraction and Separation Processes
- Thermal properties of materials
- Ferroelectric and Piezoelectric Materials
- Thermal Expansion and Ionic Conductivity
- Conducting polymers and applications
- Thin-Film Transistor Technologies
- Silicon Nanostructures and Photoluminescence
- nanoparticles nucleation surface interactions
- Luminescence Properties of Advanced Materials
- Advanced Frequency and Time Standards
- Advanced Surface Polishing Techniques
Luoyang Institute of Science and Technology
2015-2024
Wuhan University of Technology
2015-2018
State Council of the People's Republic of China
2016
Institute of Solid State Physics
2005-2010
Chinese Academy of Sciences
2007-2010
Georgi Nadjakov Institute of Solid State Physics
2007-2008
Abstract The high theoretical capacity and natural abundance of SiO 2 make it a promising high‐capacity anode material for lithium‐ion batteries. However, its widespread application is significantly hampered by the intrinsic poor electronic conductivity drastic volume variation. Herein, unique hollow structured Ni/SiO nanocomposite constructed ultrafine Ni nanoparticle (≈3 nm) functionalized nanosheets designed. nanoparticles boost not only but also electrochemical activity effectively....
Porous ZnO nanotubes have been synthesized via a facile hydrothermal method based on preferential etching strategy. The nearly homogeneous size with about 250 nm diameter, 40 wall thickness, and 500 length. Nanoholes diameters ranging from tens to hundreds of nanometers were created the side tubular structure. Formation porous resulted along c axis relatively slow radial directions due polar feature crystal. Superior photocatalytic activity in degradation methyl orange compared other samples...
Metal chalcogenides have emerged as promising anode materials for lithium ion batteries (LIBs) and sodium (SIBs). Herein, a free-standing membrane based on ultralong Sb2Se3 nanowires has been successfully fabricated via facile hydrothermal synthesis combined with subsequent vacuum filtration treatment. The as-achieved constructed by pure exhibits good flexibility integrity. Meanwhile, we investigate the storage behavior of nanowire-based membrane. When applied LIBs, it delivers reversible...
Sodium-ion batteries (SIBs) are considered as one of the most favorable alternative devices for sustainable development modern society. However, it is still a big challenge to search proper anode materials which have excellent cycling and rate performance. Here, zinc selenide microsphere multiwalled carbon nanotube (ZnSe/MWCNT) composites prepared via hydrothermal reaction following grinding process. The performance ZnSe/MWCNT SIB studied first time. As result, ZnSe/MWCNTs exhibit capacity...
SnO 2 suffers from fast capacity fading in lithium‐ion batteries due to large volume expansion as well unstable solid electrolyte interphase. Herein, the design and synthesis of phosphorus bridging graphene through covalent bonding are demonstrated achieve a robust structure. In this unique structure, is able covalently “bridge” tin oxide nanocrystal PC SnOP bonding, respectively, act buffer layer keep structure stable during charging–discharging. As result, when applied lithium battery...
Herein, a graphene oxide (GO)-wired manganese silicate (MS) hollow sphere (MS/GO) composite is successfully synthesized. Such an architecture possesses multiple advantages in lithium and sodium storage. The MS structure provides sufficient free space for volume variation accommodation; the porous low-crystalline features facilitate diffusion of ions; meanwhile, flexible GO sheets enhance electronic conductivity to certain degree. When applied as anode material lithium-ion batteries (LIBs),...
Hierarchical copper silicate hydrate hollow spheres-reduced graphene oxide (RGO) composite is successfully fabricated by a facile hydrothermal method using silica as in situ sacrificing template. The electrochemical performance of the lithium-ion battery anode was studied for first time. Benefiting from synergistic effect hierarchical structure and conductive RGO matrix, exhibits excellent long-life rate capability. A capacity 890 mAh/g achieved after 200 cycles at mA/g 429 retained 800 1000...
Layered silicate is a new type of electrode material with high reversible capacity. However, its poor electrical conductivity leads to rapid capacity decay. To solve this problem, reduced graphene oxide (RGO) wrapped nickel (NiSiO) hollow spheres are successfully synthesized. The structure provides sufficient free space accommodate the volume variation during lithiation/de-lithiation and RGO improves conductivity. resulting NiSiO/RGO delivers 400 mA h g−1 at 500 after 1000 cycles, making...
A versatile method was developed to synthesize nickel silicate, silica, and silica−nickel composite porous hollow spheres by using silica as templates. In the preparation, were treated with a mixture of NiSO4·6H2O NH3·H2O. The nickel-based ingredient reacted form shell while alkaline solution could remove core, thus forming silicate spheres. After these further hydrogen in reduction or HCl etching, they became spheres, respectively. sizes depended on concentration precursor. Our...
A novel hollow shell-controlled Li<sub>3</sub>VO<sub>4</sub>is fabricated<italic>via</italic>a facile self-template method which exhibits excellent electrochemical performance.
In this paper, we report the photoluminescence (PL) properties of porous ZnO nanotubes prepared by a two-step hydrothermal method. The show nearly homogeneous size about 250 nm diameter, 50 wall thickness and 500 length. There are always some scattered nanoholes with sizes ranging from several tens nanometres to 200 on side each nanotube. A polychromatic PL band consisting blue, green orange emissions was realized introducing unwanted native defects into lattice. Both structure production...
Photoresist, a frequently used material in existing microfabrication processes, can be utilized carbon micro electro mechanical system (C-MEMS) since the patterned micro/nano structures formed by pyrolysis of photoresist.
A novel hierarchical Bi0.5Na0.5TiO3 (BNT) micro/nanostructure was synthesized viain situself-assembly of BNT nanocrystals under hydrothermal conditions. Each spheric flower-like is composed nanosheetsca. 100 nm in width, 300 length and 10 thickness. The self-assembly growth process micro/nanostructures from investigated by changing the reaction time, molar ratio precursors NaOH concentration. From time-dependent morphology evolution, a two-step mechanism proposed to explain...
A diamond-shaped P-doped ZnO nanostructure was fabricated on a Si (100) substrate by chemical vapor deposition method. The photoluminescence properties of the were studied with temperature range from 81 to 306 K. At K, series transitions donor−acceptor pairs and their phonon replicas observed in PL spectrum. These results revealed that shallow-donor deep-acceptor impurity bands existed nanostructure. From 111 abnormal UV emission intensity observed. multiphonon scattering spectra attributed...