A5100636626- Advanced Thermoelectric Materials and Devices
- Chalcogenide Semiconductor Thin Films
- Thermal properties of materials
- Magnetic Properties of Alloys
- Thermal Expansion and Ionic Conductivity
- Magnetic properties of thin films
- Hydraulic and Pneumatic Systems
- High Entropy Alloys Studies
- Intermetallics and Advanced Alloy Properties
- Quantum Dots Synthesis And Properties
- Gear and Bearing Dynamics Analysis
- Rare-earth and actinide compounds
- Tribology and Lubrication Engineering
- Magnetic Properties and Applications
- Heusler alloys: electronic and magnetic properties
- Perovskite Materials and Applications
- Magnetic and transport properties of perovskites and related materials
- Ferroelectric and Piezoelectric Materials
- Anaerobic Digestion and Biogas Production
- Hydrogen Storage and Materials
- Advanced Sensor and Energy Harvesting Materials
- Water Quality and Pollution Assessment
- Thermal Radiation and Cooling Technologies
- Microwave Dielectric Ceramics Synthesis
- Advanced Materials and Mechanics
Queen Mary University of London
2015-2024
Harbin Institute of Technology
2023-2024
Xiamen University
2024
China National Offshore Oil Corporation (China)
2023
Shanghai Tongji Urban Planning and Design Institute
2022
Istituto Tecnico Industriale Alessandro Volta
2021
Weatherford College
2021
Chinese Academy of Sciences
2013-2020
Ningbo Institute of Industrial Technology
2017-2020
Nanoforce Technology (United Kingdom)
2020
High-entropy compounds with compositional complexity can be designed as new thermoelectric materials. Here a data-driven model was developed, which chose suitable elements to reduce the enthalpy of formation and hence increase chance single phase formation. Using this model, two high-entropy sulfides were designed, metallic Cu5SnMgGeZnS9 semiconducting Cu3SnMgInZnS7. They then successfully fabricated single-phase dense ceramics homogeneously distributed cations, their stability atomic local...
The discovery and design of compounds with intrinsically low thermal conductivity, especially a special bonding nature stable crystal structure, is new direction to broaden the scope potential thermoelectric (TE) materials.
Abstract Radioisotope power systems utilising americium-241 as a source of heat have been under development in Europe part European Space Agency funded programme since 2009. The aim is to develop all the building blocks that would enable launch and operate deep space planetary missions environments where use solar or alternative generation technologies challenging. Although some technical policy work activity predate ESA programme, maturity technology has now reached level it can be...
This work highlights routes towards controlled substitutional doping of halide perovskites on the B-site to optimise their thermoelectric properties.
The Na and Ce co-doped CaBi<sub>4</sub>Ti<sub>4</sub>O<sub>15</sub> (CBT)<sub> </sub>Aurivillius ceramics in a Ca<sub>1-<em>x</em></sub>(Na<sub>0.5</sub>Ce<sub>0.5</sub>)<em><sub>x</sub></em>Bi<sub>4</sub>Ti<sub>4</sub>O<sub>15</sub> (CNCBT, <em>x </em>= 0, 0.03, 0.05, 0.08 0.12) system were synthesized by the conventional solid-state sintering method. All compositions show single-phase orthorhombic (space group <em>A</em>2<sub>1</sub><em>am</em>) structure at room temperature. shift of...
Thermoelectric (TE) devices can convert heat to electricity directly, which offers a unique opportunity realize waste recovery. However, conventional TE inevitably use sinks, are bulky, rigid and heavy, limiting practical applications. Herein, we propose fully integrated film-based device with intrinsically built-in fins as sink in hexagonal honeycomb structure, that simultaneously achieves high performance conformability, confirmed by experiments modelling. A flexible Kapton substrate...
Enhanced thermoelectric performance of Cu<sub>3</sub>SbS<sub>4</sub> with fine microstructure and optimized carrier concentration by Sn-doping.
Cu3SbS4 is a copper-based sulfide composed of earth-abundant elements. We present combined theoretical and experimental study the thermoelectric properties Ge-doped Cu3SbS4. On basis density functional theory, we found that pristine compound semiconductor with large density-of-state effective mass ∼2.2 me for holes. Ge was predicted to be an p-type dopant only slightly shifts band structure The power factor reach maximum value 10–15 mol % Ge-doping on Sb site (n = (6–9) × 1020 cm–3) at high...
Although Nd–Ce–Fe–B permanent magnets are inexpensive, they have degraded coercivity and poor thermal stability. To mitigate these disadvantages, in this work, we fabricated a core–shell grain structure with Y-rich core (Nd, Ce)-rich shell the Nd15.25(Ce1−xYx)15.25FebalAl0.1Cu0.1B (x = 0, 0.05, 0.10, 0.15, 0.20) system by substituting Y for Ce. Substituting increased from 7.13 kOe Ce1.00Y0.00 0) magnet to 9.73 Ce0.85Y0.15 0.15) magnet. The stability of its magnetic performance also improved...
Using high throughput screening, thirteen compounds were identified as promising thermoelectric materials and two of them successfully fabricated.
The high performance of the iron-stabilized cubic structure Cu<sub>3</sub>SbS<sub>3</sub>makes it a strong candidate for thermoelectric application.
In this work, Cu-based sulfides (chalcopyrite CuFeS2, mohite Cu2SnS3, tetrahedrite Cu12Sb4S13, mawsonite Cu6Fe2SnS8, and kesterite Cu2ZnSnS4) were synthesized by industrial milling in an eccentric vibratory mill to demonstrate the scalability of their synthesis. For a comparison, laboratory-scale planetary was performed. The properties obtained samples characterized X-ray diffraction and, some cases, also Mössbauer spectroscopy. densification powders, method spark plasma sintering applied...
Composition modification by doping and solid solution is a well-studied strategy in thermoelectric (TE) materials to optimise their properties. Recently, the concept of entropy stabilization has offered possibility forming random solutions that have properties go beyond rule mixture. In this study, we prepared series high-entropy half-Heusler (HEHHs) with varying valence electron counts (VEC), (Ti0.33Zr0.33Hf0.33)1-x(V0.33Nb0.33Ta0.33)xCoSb (x = 0.5 0.75). Compared medium- low-entropy...
Orientation of graphene platelets in SrTiO<sub>3</sub>ceramic composites leads to significant anisotropy electrical conductivity and thermal conductivity.
The shock-compression is a novel method to generate high-density dislocations in the thermoelectric materials and enhance their properties.
Calcium cobaltite (Ca3Co4O9) is a promising p-type thermoelectric oxide material. Here, we present an approach to optimize the performance of Ca3Co4O9 by controlling chemical composition and fabrication process. Ca3-xBixCo3.92O9+δ (0.1 ≤ x 0.3) Ca2.7Bi0.3CoyO9+δ (3.92 y 4.0) ceramics were prepared Spark Plasma Sintering (SPS). Stoichiometric mixtures raw materials combined calcined at 1203 K for 12 h, followed SPS 1023 5 min 50 MPa. The samples subsequently annealed or h in air. XRD HRTEM...
Carbon nanotubes (CNTs), with their combination of excellent electrical conductivity, Seebeck coefficient, mechanical robustness and environmental stability are highly desired as thermoelectric (TE) materials for a wide range fields including Internet Things, health monitoring remediation solutions. However, high thermal conductivity (κ) is an obstacle to practical TE applications. Herein, we present novel method reduce the κ CNT veils, by introducing defects, while preserving coefficient...