A5101708942- ZnO doping and properties
- Advanced Thermoelectric Materials and Devices
- Gas Sensing Nanomaterials and Sensors
- Hydrocarbon exploration and reservoir analysis
- Chalcogenide Semiconductor Thin Films
- Microfluidic and Capillary Electrophoresis Applications
- High voltage insulation and dielectric phenomena
- Thermal properties of materials
- Ga2O3 and related materials
- Analytical Chemistry and Sensors
- Analytical Chemistry and Chromatography
- Thermal Radiation and Cooling Technologies
- Power Transformer Diagnostics and Insulation
- Phase-change materials and chalcogenides
- Nanomaterials and Printing Technologies
- Magnesium Oxide Properties and Applications
- Methane Hydrates and Related Phenomena
- Advanced Sensor and Energy Harvesting Materials
- Microfluidic and Bio-sensing Technologies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Coal Properties and Utilization
- Copper-based nanomaterials and applications
- Lightning and Electromagnetic Phenomena
- Electronic and Structural Properties of Oxides
- Electrochemical Analysis and Applications
Wuhan University
2010-2025
Laboratoire de physique des Solides
2025
University of Massachusetts Amherst
2024
Institute of Physics
2024
Karamay Central Hospital of Xinjiang
2024
Jianghan University
2024
Huazhong University of Science and Technology
2011-2023
Wuhan National Laboratory for Optoelectronics
2011-2023
State Grid Corporation of China (China)
2023
China University of Petroleum, East China
2022
Thermoelectric materials can realize direct and mutual conversion between electricity heat. However, developing a strategy to improve high thermoelectric performance is challenging because of strongly entangled electrical thermal transport properties. We demonstrate case in which both pseudo-nanostructures vacancy clusters dynamic charge-carrier regulation trapped-hole release have been achieved p-type lead telluride-based materials, enabling the simultaneous regulations phonon charge...
Abstract Due to their extensive microporous structure, metal‐organic frameworks (MOFs) find widespread application in constructing modification layers, functioning as ion sieves. However, the layers prepared by existing methods feature gaps between MOFs that are noticeably larger than inherent MOF pore dimensions. Polysulfides and lithium ions unavoidably permeate through these gaps, hindering full exploitation of structural advantages. Herein, an ultrathin (20 nm) crack‐free film is formed...
As a liquid-like material, CuAgSe has high carrier mobility and ultralow lattice thermal conductivity. It undergoes an n-p conduction-type transition during β- to α-phase with increasing temperature. Moreover, optimization of the thermoelectric performance is rather difficult, owing two-carrier conduction in this material. In work, we reported free tuning type by manipulating cation vacancies. Positron annihilation measurements reveal that increase CuAg content can effectively suppress...
Cu22Sn10S32 is a recently discovered material in the Cu–Sn–S system, which contains relatively high intrinsic carrier concentration. In this work, Zn- and In-doped compounds were prepared by ball milling combined with spark plasma sintering. It found that incorporation of Zn at Cu site leads to decrease electrical conductivity, primarily due reduction hole The doping shows much stronger effect on conductivity. By combining positron annihilation measurements, it speculated carriers originate...
The topological insulator MnSb2Te4 shows promising potential in thermoelectric applications due to its intrinsically low lattice thermal conductivity. However, performance is limited by the high carrier concentration, of which origin still unclear. In this work, concentration successfully tuned from 2.24 × 1021 cm-3 as 9.1 1019 cm-3. Transmission electron microscopy and positron annihilation measurements suggest that large amounts Mn vacancies exist septuple layer MnSb2Te4, are responsible...
After mixing Cu 22 Sn 10 S 32 and nano-In 2 O 3 via ball milling, high-temperature sintering facilitated the reaction between them, producing SnO incorporating In into lattice. This optimized thermoelectric properties.
The corroded metals in the world account for about 1/3 of total every year.How to prevent metal corrosion has become a major research topic scientific community.Although traditional chromate passivation, phosphate conversion and other technologies can solve problem metals, they pollute environment pose threat human health.It is urgent develop new green surface treatment technology.The unique chemical structure silane form good protective layer on play an anti-corrosion effect, so...
Novel hollow ZnO microstructures and microberets (ZMBs) with nanowires grown vertically on both the inner outer surfaces of beret shells were synthesized Si(100) substrates by simple thermal evaporation pure zinc powder without any catalyst or template material at a relative low temperature 490 °C. XRD, SAED, HRTEM patterns show that ZMBs are single-crystalline wurtzite structures. The growth mechanism is discussed in detail. formation these depends optimum starting time air introduction. It...
Low thermal conductivity is crucial for obtaining a promising thermoelectric (TE) performance in semiconductors. In this work, the TE properties of Cu4TiS4 and Cu4TiSe4 were theoretically investigated by carrying out first-principles calculations solving Boltzmann transport equations. The calculated results reveal lower sound velocity compared to that Cu4TiS4, which due weaker chemical bonds crystal orbital Hamilton population (COHP) also larger atomic mass Cu4TiSe4. addition, strong lattice...
Oil-immersed paper is a weak link in internal insulation of oil immersed power transformer, whose aging state distributes inhomogeneously. However, most the current assessment methods fail to consider spatial distribution areas inside transformer. Aiming at this problem, proposes inversion detection method obtain resistivity oil-immersed various regions nondestructively, and uses assess directly transformers. Finite element applied establish mapping relationship between different regions,...
The efficient development of carbonate rock reservoirs with rich oil and gas resources has become a hot topic focal point in the current industry. differs from that sandstone reservoirs. Although flooding, water chemical flooding have been carried out recent years, is still unsatisfactory, on-site application technologies such as nanoparticles on rise. For future acid fracturing technology, accurate reservoir geological description, core printing based additive manufacturing new techniques,...
Abstract A newly developed solid–gas chemical reaction route has been demonstrated to fabricate MgO nanotube arrays by using prefabricated ZnO nanorods as templates. The formation process involves the Kirkendall effect, in which out‐diffusion of core material through shells is faster than in‐diffusion vapor‐phase Mg atoms, resulting voids, eventually induces hollow nanotubes. dimensions and sizes obtained nanotubes can be controlled employing suitable Other types complex architectures with...
In this work, a series of Cu2Se/x wt % porous carbon (PC) (x = 0, 0.2, 0.4, 0.6, 0.8, 1) composite materials were synthesized by ball milling and spark plasma sintering (SPS). The highly ordered was hydrothermal method using mesoporous silica (SBA-15) as the template. X-ray diffraction results show that incorporation induces phase transition Cu2Se from β to α phase. Meanwhile, addition reduces carrier concentration 2.7 × 1021 2.45 1020 cm–3 1 order magnitude. decrease leads reduction...
Natural analcime, an aluminosilicate mineral with multiple genetic mechanisms, widely occurs in fine-grained sedimentary reservoirs rich oil and gas. Researchers have discussed the source formation mechanism of influence morphology formation, occurrence characteristics associated minerals, geochemical data, Si/Al ratio on reservoir properties. The location, particle size, automorphism, purity, fracture development can indicate analcime macroscopically. correlation between enrichment minerals...