A5101704029- Advanced Thermoelectric Materials and Devices
- Chalcogenide Semiconductor Thin Films
- Thermal properties of materials
- Thermal Radiation and Cooling Technologies
- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- 2D Materials and Applications
- Luminescence and Fluorescent Materials
- Advanced Thermodynamics and Statistical Mechanics
- Advanced Photocatalysis Techniques
- Phase-change materials and chalcogenides
- Advanced Semiconductor Detectors and Materials
- Chemical Thermodynamics and Molecular Structure
- Toxic Organic Pollutants Impact
- Adipokines, Inflammation, and Metabolic Diseases
- Advanced biosensing and bioanalysis techniques
- Food Drying and Modeling
- Nanoplatforms for cancer theranostics
- Infrared Target Detection Methodologies
- High voltage insulation and dielectric phenomena
- Copper-based nanomaterials and applications
- Ferroelectric and Piezoelectric Materials
- Porphyrin and Phthalocyanine Chemistry
- Dielectric properties of ceramics
- Fuel Cells and Related Materials
Southern University of Science and Technology
2018-2024
China University of Mining and Technology
2023
National University of Singapore
2020-2022
Sichuan University
2021
Hong Kong University of Science and Technology
2010-2011
University of Hong Kong
2010-2011
Institute of Molecular Functional Materials
2010
L. N. Gumilyov Eurasian National University
2010
Xinyang Normal University
2008-2009
Thermoelectric technology generates electricity from waste heat, but one bottleneck for wider use is the performance of thermoelectric materials. Manipulating configurational entropy a material by introducing different atomic species can tune phase composition and extend optimization space. We enhanced figure merit (zT) value to 1.8 at 900 kelvin in an n-type PbSe-based high-entropy formed entropy-driven structural stabilization. The largely distorted lattices this system caused unusual...
CO2 sensing is of great societal implications, as a component gas mixtures from many natural and anthropogenic processes with huge impacts on globe climate human well-being. Herein we report assay scheme over wide concentration range, utilizing fluorogen an aggregation-induced emission feature liquid tunable polarity viscosity. The process specific, quantitative, interferent tolerant.
Molecules of siloles are almost non-fluorescent but their nanoaggregates highly emissive, exhibiting aggregation-induced emission (AIE). The AIE-active aggregates cytocompatible with living cells, stain cytoplasms HeLa cells indelibly without contaminating another type cell line in a co-culture system, and remain visible for long period time. Detailed facts importance to specialist readers published as "Supporting Information". Such documents peer-reviewed, not copy-edited or typeset. They...
Developing highly active oxygen evolution reaction (OER) catalysts with fast OER kinetics is crucial for disruptively changing the energy technology, where unlocking of catalytic origin key to rational design high-performance catalysts. Herein, a Co-based heterostructure consisting cobalt (Co) and molybdenum carbide (Mo2C) nanoparticles in 2D morphology purposely designed as an precatalyst. At initial stage alkaline solution, phase transition Co metal into γ-phase oxyhydroxide (γ-CoOOH)...
Abstract We demonstrate that the thermoelectric properties of p-type chalcogenides can be effectively improved by band convergence and hierarchical structure based on a high-entropy-stabilized matrix. The is due to decreased light heavy energy offsets alloying Cd for an enhanced Seebeck coefficient electric transport property. Moreover, manipulated entropy engineering introduces all-scale scattering sources heat-carrying phonons resulting in very low lattice thermal conductivity....
Thermoelectrics enable direct heat-to-electricity transformation, but their performance has so far been restricted by the closely coupled carrier and phonon transport. Here, we demonstrate that quantum gaps, a class of planar defects characterized nano-sized potential wells, can decouple transport selectively scattering phonons while allowing carriers to pass effectively. We choose van der Waals gap in GeTe-based materials as representative example illustrate decoupling mechanism. The well...
A new strategy of constructing van der Waals gaps in cubic-structured Sb<sub>2</sub>Te<sub>3</sub>(SnTe)<sub>n</sub> is presented to enhance the thermoelectric properties.
Abstract The exploration of n‐type PbTe as thermoelectric materials always falls behind its p‐type counterpart, mainly due to their quite different electronic band structure. In this work, elemental Sb and Cu 2 Te are introduced into an base material (PbTe) 81 ‐Sb 3 . introduction extra can effectively tune the concentration electrons; meanwhile, precipitates also scatter low‐energy electrons (negatively contribute Seebeck coefficient) thus enhance overall coefficient. added is found...
Abstract Lead telluride (PbTe) has long been regarded as an excellent thermoelectric material at intermediate temperature range (573–873 K); however, n‐type PbTe's performance is always relatively inferior to its p‐type counterpart mainly due their different electronic band structures. In this work, ultrahigh quality factor ( µ /κ L ≈ 1.36 × 10 5 cm 3 KJ −1 V ) reported in extra 0.3% Cu doped 0.9 (PbS) 0.1 as‐cast ingots. Transmission electron microscopy (TEM) characterization reveals that...
Ordered germanium vacancies in telluride thermoelectric material are called van der Waals (vdW) gaps, and they beneficial for the performance of material. The vdW gaps have been observed by atomic resolution scanning transmission electron microscopy, but their origin remains unclear, which prevents extensive application other materials systems. Here, we report that occurrence is mainly driven strain from cubic-to-rhombohedral martensitic transition. Direct structural evidence given here situ...
Alloying PbS in PbTe–3% Sb enables a fine balance between mechanical and thermoelectric properties.
SnTe is deemed a promising mid-temperature thermoelectric material for low toxicity, cost, and decent performance. Sole doping/alloying on Sn sites was reported to result in either modified band alignment or reduced lattice thermal conductivity, thus contributing an enhanced overall figure of merit. However, this strategy alone always unable take full use the material's advantage, especially considering that it simultaneously pushes hole concentration off optimal range. In work, we adopted...
SnTe is a lead-free and promising p-type thermoelectric material in an intermediate temperature range (500–900 K), but its intrinsic performance poor due to excess cation vacancies relatively large band offset between L ∑ valence bands. In this study, we alloyed Sb2Te3 into the matrix successfully promoted convergence as supported by calculated two-band Pisarenko curve; further doped Mg obtained significantly reduced lattice thermal conductivity ∼0.44 W m–1 K–1 at 623 K. Scanning...
We directly observe the quasi-2D “liquid-like” state's structure at atomic scale in superionic conductor thermoelectric material AgCrSe<sub>2</sub>.
Nowadays, the pseudolayered Germanium antimony telluride (Sb2Te3(GeTe)n), which contains an intrinsically low thermal conductivity, has attracted wide attention as promising intermediate temperature thermoelectric material. However, relatively electrical property in some compositions, such n = 12, limits further investigation of this system. In work, transport properties Sb2Te3(GeTe)12 samples are significantly enhanced due to optimized hole density by rhenium doping, contributing promotion...
Due to its abundant, inexpensive, and nontoxic features, higher manganese silicide MnSi1.75 has drawn intensive attention as a promising middle temperature thermoelectric material. In this study, we applied aberration-corrected scanning transmission electron microscopy characterize chimney ladder crystal structure found the particular contrast along [110] direction, contributed from enhancement of helical Si layers on Mn layers. Moreover, it is demonstrated that Seebeck coefficient...