A5102782394- Advanced Thermoelectric Materials and Devices
- Thermal properties of materials
- Heusler alloys: electronic and magnetic properties
- Chalcogenide Semiconductor Thin Films
- Thermal Radiation and Cooling Technologies
- Thermal Expansion and Ionic Conductivity
- Advanced Photocatalysis Techniques
- Supercapacitor Materials and Fabrication
- 2D Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- Advanced Thermodynamics and Statistical Mechanics
- Advanced Battery Materials and Technologies
- Conducting polymers and applications
- Advanced battery technologies research
- Electrocatalysts for Energy Conversion
- Advanced Sensor and Energy Harvesting Materials
- Advancements in Battery Materials
- Quantum Dots Synthesis And Properties
- Nanomaterials for catalytic reactions
- Ionic liquids properties and applications
- Molecular Junctions and Nanostructures
- Inorganic Chemistry and Materials
- Rare-earth and actinide compounds
- Phase Change Materials Research
- Topological Materials and Phenomena
Xihua University
2016-2025
University of Science and Technology Beijing
2023
Taizhou University
2023
Southwest Jiaotong University
2022
Chengdu University
2015-2020
Advanced Energy Materials (United States)
2017-2018
Institute of Physics
2016
Chinese Academy of Sciences
2016
University of Houston
2016
Hubei Normal University
2016
Abstract Combining high energy ball‐milling and hot‐pressing, significant enhancements of the thermoelectric figure‐of‐merit ( ZT ) have been reported for p‐type Bi 0.4 Sb 1.6 Te 3 nanocomposites. However, applying same technique to n‐type 2 2.7 Se 0.3 showed no improvement on values, due anisotropic nature properties . Even though texturing was effective in improving peak from 0.85 1.04, reproducibility batch remains unsatisfactory. Here, we show that good can be achieved by introducing an...
By adding aluminium (Al) into lead selenide (PbSe), we successfully prepared n-type PbSe thermoelectric materials with a figure-of-merit (ZT) of 1.3 at 850 K. Such high ZT is achieved by combination Seebeck coefficient caused very possibly the resonant states in conduction band created Al dopant and low thermal conductivity from nanosized phonon scattering centers.
Significance Higher carrier mobility can contribute to a larger power factor, so it is important identify effective means for achieving higher mobility. Since governed by the band structure and scattering mechanism, its possible enhancement could be obtained manipulating either or both of these. Here, we report substantial in tuning mechanism n-type Mg 3 Sb 2 -based materials. The ionized impurity these materials has been shifted into mixed acoustic phonons impurities. Our results clearly...
There is an urgent need to develop a series of multifunctional materials with good biocompatibility, high mechanical strength, hemostatic properties, antiadhesion, and anti-infection for applications in wound care. However, successfully developing challenging. In this study, two superhydrophobic composite coatings strong antifouling blood repellency, fast hemostasis, antibacterial activity are prepared on cotton fabric surface by simple, green, low-cost one-step dip-coating technology. The...
Here we report the thermoelectric properties of NbCoSn-based n-type half-Heuslers (HHs) that were obtained through arc melting, ball milling, and hot pressing process. With 10% Sb substitution at Sn site, enhanced with a maximum power factor reaching ∼35 μW cm−1 K−2 figure merit (ZT) value ∼0.6 in NbCoSn0.9Sb0.1. The ZT is doubled compared to previous report. In addition, specific cost ($ W−1) decreased by ∼68% comparing HfNiSn-based HH because elimination Hf.
Abstract Zintl compounds such as n‐type Mg 3 (Sb,Bi) 2 show promising thermoelectric applications benefiting from their high valley degeneracy and low lattice thermal conductivity. However, the heavier p‐type A X ( = Ca, Yb; Bi Sb) counterparts even exhibit a higher κ lat due to strong chemical bonding. Reducing of is an important route for improving performance. Herein, it found that Cd doping at site in CaMg can weaken intralayer covalent bonds soften acoustic phonons, well fill optical...
Thallium (Tl)-doped lead telluride (Tl0.02Pb0.98Te) thermoelectric materials fabricated by ball milling and hot pressing have decent properties but weak mechanical strength. Addition of silicon (Si) nanoparticles strengthened the property reducing grain size defect density resulted in low electrical conductivity that was not desired for any materials. Fortunately, doping sodium (Na) into Si added Tl0.02Pb0.98Te brings back high yields higher figure-of-merit ZT values ∼1.7 at 770 K. The...
In the present work, effect of aluminum (Al) on thermoelectric properties PbTe is studied. Aluminum doped samples, fabricated by a ball milling and hot pressing, have Seebeck coefficients between −100 −200 μV K−1 electrical conductivities (3.6–18) × 104 S m−1 at room temperature, which means that Al an effective donor in PbTe. The first principle calculations clearly show increase density states close to Fermi level conduction band due doping, averages up energy mass electrons, resulting...
Bi2Te3 based alloys have been the most widely used thermoelectric material at low temperature for many decades. Here we report Se doped n-type Mg3Bi2 materials with a figure-of-merit ZT of 0.82 300 K and peak 1.24 498 K, which is comparable to Te Mg3Bi1.4Sb0.6. The improved performance benefited from high carrier concentration mobility as well thermal conductivity reduction. reduced resistivity increased power factor all measured temperatures, leading higher engineering (ZTeng) (PFeng)...
Diabetic wound microenvironment has extremely complex continuous hyperglycemia, hypoxia, bacterial infection, and reactive oxygen species accumulation, which lead to slow healing. In order overcome these limitations, glucose oxidase (GOX) catalase (CAT) were loaded into zinc sulfide (ZnS) particle spheres construct a high responsive treatment strategy with good biocompatibility. When they encounter hyperglycemia oxidative at the site, presence of GOX CAT will be activated by undergo an...
The 2D VDW heterojunction MoC@NG@CN shows 13.4 times higher photocatalytic activity than CN. Abundant active sites, enhanced charge separation and numerous transport channels all contribute to the excellent performance.
Abstract Pd‐based alloy nanomaterials normally crystallize in the conventional face‐centered cubic (fcc) crystal phase. Here, 2H‐Au nanosheets (NSs), possessing 2H phase (2H: hexagonal close‐packed with a stacking sequence of “AB”), are used as templates for growth PdFe, during which 2H‐to‐fcc transformation Au NSs happens, leading to formation 2H/fcc Au@PdFe core–shell NSs. By changing Pd/Fe atomic ratio, ratio can be tuned accordingly. As proof‐of‐concept application, as‐synthesized Au@Pd...
Thallium doping into lead telluride has been demonstrated to increase the dimensionless thermoelectric figure-of-merit (ZT) by enhancing Seebeck coefficient due creation of resonant states close Fermi level without affecting thermal conductivity. However, process is tedious, energy consuming, and small in quantities since it involves melting, slow cooling for crystal growth, long time annealing, post-crushing hot pressing. Here we show that a similar ZT value about 1.3 at 400 °C achieved on...
This paper reports a novel loofah-derived hierarchical scaffold to obtain three-dimensional biocarbon-graphene-TiO2 (BC-G-TiO2) composite materials as electrodes for supercapacitors. The loofah was first loaded with G and TiO2 by immersing, squeezing, loosening into the mixed solution of graphene oxide titania, then carbonized at 900 °C form BC-G-TiO2 composite. synergistic effects naturally biocarbon structure, graphene, nanoparticles on electrochemical properties are analyzed. provides...