A5100601275- Advanced Surface Polishing Techniques
- Advanced machining processes and optimization
- Advanced Thermoelectric Materials and Devices
- Laser Material Processing Techniques
- Advanced Machining and Optimization Techniques
- Thermal properties of materials
- Thermal Radiation and Cooling Technologies
- Water Systems and Optimization
- Chalcogenide Semiconductor Thin Films
- Design Education and Practice
- Piezoelectric Actuators and Control
- Surface Roughness and Optical Measurements
- Engineering Applied Research
- Advanced Measurement and Metrology Techniques
- Structural Analysis and Optimization
- Advanced Materials and Mechanics
- Metal and Thin Film Mechanics
- Diamond and Carbon-based Materials Research
- Cellular and Composite Structures
- Manufacturing Process and Optimization
- Structural Behavior of Reinforced Concrete
- Modular Robots and Swarm Intelligence
- Crystallization and Solubility Studies
- Erosion and Abrasive Machining
- Geotechnical Engineering and Underground Structures
North China University of Water Resources and Electric Power
2010-2024
Beihang University
2017-2024
Hebei University of Technology
2022-2023
Tianjin Economic-Technological Development Area
2022-2023
Harbin Institute of Technology
2013-2023
Hohai University
2023
Hunan University
2022-2023
Jiangsu Vocational College of Medicine
2021-2023
Ningbo Institute of Industrial Technology
2019-2021
Chinese Academy of Sciences
2019-2021
Bi–Zn codoping promotes valence band convergence and strengthens multiple defect-phonon scattering in GeTe, leading to obviously improved thermoelectric properties.
In recent decades, bismuth telluride (Bi2Te3) has been in widespread use for normal-temperature thermoelectric cooling. However, commercial zone-melted faces the big challenge of dramatically decreased properties at higher temperature, which limits its usage intermediate temperature. this contribution, performance p-type is enhanced via a synergistic optimization by hot deformation and copper doping. Hot treatment boosts grain growth exhibits donor-like effects, leading to improved...
Phonon engineering is a core stratagem to improve the thermoelectric performance, and multi-scale defects are expected scatter broad range of phonons compress lattice thermal conductivity. Here, we demonstrate obviously enhanced properties in Bi0.48Sb1.52Te3 alloy by hot-pressing texture method along axial direction zone-melted ingot. It found that plastic deformation grain refinement rearrangement occurs during textured pressing process. Although obtained power factor slightly decreased,...
Fermi-surface dynamics drives the thermoelectric performance of n-type SnSe along out-of-plane direction.
Bismuth telluride has been the only commercial thermoelectric candidate, but n-type sintered material lags well behind p-type one in zT value, which severely limits further development of thermoelectrics. Here, we report a promising technique named hot-stacked deformation to effectively improve properties Bi2Te2.79Se0.21 + 0.067 wt % BiCl3 materials based on zone-melting ingots. It is found that high grain alignment maintained during plastic and carrier concentration properly optimized owing...
A novel expandable wheel body assembly is designed in this paper. The utilizes the elastic deformation of hub clamp bearing assembly. gaps between them are effectively eliminated by structure, improving rotational precision and operational stability momentum wheel. finite element model was established, stress analysis conducted under constant acceleration using software ANSYS. results demonstrate that meets required strength specifications. Additionally, random vibration characteristics...
A unique open-framework chalcogenide was constructed from two kinds of cluster-based secondary building units (SBUs), namely, the icosahedral Cu<sub>8</sub>Se<sub>13</sub> cluster and octahedral Cu<sub>4</sub>Se<sub>6</sub> cluster.
Bismuth telluride alloys are the only commercialized thermoelectric materials, which have successfully realized practical applications of active cooling and waste heat harvesting near room temperature. However, drawbacks intermediate ZT values brittle nature zone-melted materials limited their future development. Herein, we show that AgBiSe2 alloying is an effective approach to improve both mechanical performance sintered Bi0.48Sb1.52Te3 materials. The addition can not suppress bipolar...
GeTe-based compounds are promising thermoelectric materials at medium temperature, while the performance of GeTe matrix is mercy its high hole concentration and thermal conductivity. This work reports optimization by alloying with CuSbSe2. With only 5% CuSbSe2 being introduced, p-type greatly decreased from ∼1021 to ∼1020 cm–3, conductivity room temperature reduced more than 70%. Interestingly, also induces a crystal structure transition which results in cubic spite noncubic orthorhombic...