Rapid microwave synthesis of Cu2Se thermoelectric material with high conductivity

2021 ◽  
pp. 2151005
Author(s):  
Yongpeng Wang ◽  
Wenying Wang ◽  
Haoyu Zhao ◽  
Lin Bo ◽  
Lei Wang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Grain Growth ◽  
Microwave Synthesis ◽  
Annealing Process ◽  
High Electrical Conductivity ◽  
Cooling Process ◽  
Slow Cooling ◽  
Te Material ◽  
Hot Pressing Sintering

In this study, the dense bulk Cu2Se thermoelectric (TE) materials were prepared by microwave melting and hot pressing sintering. The effects of different cooling processes on the microstructure and TE properties of Cu2Se were investigated. The results showed that the Cu2Se TE material prepared by microwave synthesis had high electrical conductivity, which was about 105 S⋅ m[Formula: see text]. The annealing process can lead to grain growth of Cu2Se and the formation of micropores in the Cu2Se, which deteriorated the thermal conductivity. The Cu2Se material prepared by the microwave melting and slow cooling process had the best TE performance, and the ZT value can reach 0.68 at 700 K.

COPPER ALLOY No. 815

Alloy Digest ◽  
1977 ◽  
Vol 26 (5) ◽  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Copper Alloy ◽  
Heat Treating ◽  
Chromium Alloy ◽  
High Electrical Conductivity ◽  
Medium Hardness ◽  
Hardened Condition

Abstract Copper Alloy No. 815 is an age-hardenable cast copper-chromium alloy. It is characterized by high electrical and thermal conductivities combined with medium hardness and strength in the age-hardened condition. It is used for components requiring high electrical conductivity or high thermal conductivity. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Cu-332. Producer or source: Copper alloy foundries.

scholarly journals Large-scalable RTCVD Graphene/PEDOT:PSS hybrid conductive film for application in transparent and flexible thermoelectric nanogenerators

RSC Advances ◽  
2017 ◽  
Vol 7 (41) ◽  
pp. 25237-25243 ◽  
Author(s):  
Chanil Park ◽  
Dohyuk Yoo ◽  
Soeun Im ◽  
Soyeon Kim ◽  
Wonseok Cho ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
High Electrical Conductivity ◽  
Styrene Sulfonate ◽  
Conductive Film ◽  
Te Material ◽  
Poly Styrene Sulfonate ◽  
Flexible Thermoelectric

Poly(3,4-ethyldioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), as a thermoelectric(TE) material, exhibits a high electrical conductivity and ZT value (10−1–100).

scholarly journals Ultralow thermal conductivity in all-inorganic halide perovskites

2017 ◽  
Vol 114 (33) ◽  
pp. 8693-8697 ◽  
Author(s):  
Woochul Lee ◽  
Huashan Li ◽  
Andrew B. Wong ◽  
Dandan Zhang ◽  
Minliang Lai ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Acoustic Phonon ◽  
Hole Mobility ◽  
High Electrical Conductivity ◽  
Microelectronic Devices ◽  
Collective Motions ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Energy Conversion Devices

Controlling the flow of thermal energy is crucial to numerous applications ranging from microelectronic devices to energy storage and energy conversion devices. Here, we report ultralow lattice thermal conductivities of solution-synthesized, single-crystalline all-inorganic halide perovskite nanowires composed of CsPbI3 (0.45 ± 0.05 W·m−1·K−1), CsPbBr3 (0.42 ± 0.04 W·m−1·K−1), and CsSnI3 (0.38 ± 0.04 W·m−1·K−1). We attribute this ultralow thermal conductivity to the cluster rattling mechanism, wherein strong optical–acoustic phonon scatterings are driven by a mixture of 0D/1D/2D collective motions. Remarkably, CsSnI3 possesses a rare combination of ultralow thermal conductivity, high electrical conductivity (282 S·cm−1), and high hole mobility (394 cm2·V−1·s−1). The unique thermal transport properties in all-inorganic halide perovskites hold promise for diverse applications such as phononic and thermoelectric devices. Furthermore, the insights obtained from this work suggest an opportunity to discover low thermal conductivity materials among unexplored inorganic crystals beyond caged and layered structures.

Where Should We Look For High Zt Materials: Suggestions From Theory.

2000 ◽  
Vol 626 ◽  
Author(s):  
M. Fornari ◽  
D. J. Singh ◽  
I. I. Mazin ◽  
J. L. Feldman
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
First Principles ◽  
Room Temperature ◽  
First Principles Calculations ◽  
High Electrical Conductivity ◽  
Bulk Materials ◽  
Low Thermal Conductivity ◽  
Computational Exploration ◽  
Single Material

ABSTRACTThe key challenges in discovering new high ZT thermoelectrics are understanding how the nearly contradictory requirements of high electrical conductivity, high thermopower and low thermal conductivity can be achieved in a single material and based on this identifying suitable compounds. First principles calculations provide a material specific microscopic window into the relevant properties and their origins. We illustrate the utility of the approach by presenting specific examples of compounds belonging to the class of skutterudites that are or are not good thermoelectrics along with the microscopic reasons. Based on our computational exploration we make a suggestion for achieving higher values of ZT at room temperature in bulk materials, namely n-type La(Ru,Rh)4Sb12 with high La-filling.

COPPER ALLOY No. C80100

Alloy Digest ◽  
1987 ◽  
Vol 36 (2) ◽  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Corrosion Resistance ◽  
Copper Alloy ◽  
Room Temperature ◽  
Heat Treating ◽  
High Electrical Conductivity ◽  
Good Resistance ◽  
Corrosion And Oxidation ◽  
Room Temperature Strength

Abstract Copper No. C80100 is a casting copper with high electrical conductivity (100% IACS). It has low room-temperature strength and hardness and medium-to-good ductility. It has excellent thermal conductivity and good resistance to corrosion, these characteristics make it highly suitable for many applications requiring good electrical and or thermal conductivity and resistance to corrosion and oxidation. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as casting, heat treating, machining, joining, and surface treatment. Filing Code: Cu-521. Producer or source: Copper alloy foundries.

Ultralow thermal conductivity and high thermoelectric figure of merit in mixed valence In5X5Br (X = S, and Se) compounds

2020 ◽  
Vol 8 (27) ◽  
pp. 13812-13819 ◽  
Author(s):  
Tribhuwan Pandey ◽  
Arun S. Nissimagoudar ◽  
Avanish Mishra ◽  
Abhishek K. Singh
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Figure Of Merit ◽  
Mixed Valence ◽  
Thermoelectric Figure Of Merit ◽  
High Electrical Conductivity ◽  
Thermoelectric Figure ◽  
Low Thermal Conductivity ◽  
Indium Compounds

We predict that mixed valent indium compounds exhibit a combination of high electrical conductivity, high thermopower, and low thermal conductivity, resulting in a large thermoelectric figure of merit.

Annealing Effect on the Thermoelectric Properties of Hot Extruded Bi2(Te0.94Se0.06)3+0.07wt%I+0.03wt%CuBr+0.02wt%Te Compound

2006 ◽  
Vol 15-17 ◽  
pp. 404-409
Author(s):  
Wang Kee Min ◽  
Sung Doo Hwang ◽  
Chang Ho Lee ◽  
Young Do Park ◽  
Yang Do Kim ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Figure Of Merit ◽  
Room Temperature ◽  
Annealing Temperature ◽  
Raw Materials ◽  
Extrusion Process ◽  
Annealing Process ◽  
Annealing Effect ◽  
Z Value

The n-type Bi2(Te0.94Se0.06)3 thermoelectric compound was prepared by the direct extrusion process using the powder as raw materials. Hot extruded specimens were annealed at 200°C and 350°C for 2hrs. The electrical conductivity, thermoelectric power and thermal conductivity of hot extruded and annealed specimens were measured at room temperature. The fractographs of the specimens showed that the grain size became coarser and a lot of porosities were generated during annealing process. The power factor value (PF) decreased with increasing the annealing temperature. The electric conductivity and thermal conductivity of the specimens also decreased with the increase of annealing temperature. This may be reasoned that the generated porosities affect the thermal conductivity of the specimens prepared in this study. The figure of merit (Z) value of the annealed specimens at 350°C was improved about 10%. The highest Z value of the specimens annealed at 350°C was 2.0 x 10-3/K among the prepared specimens.

Liquid metal biomaterials for biomedical imaging

2022 ◽  
Author(s):  
Wenwen Gao ◽  
Yige Wang ◽  
Qian Wang ◽  
Guolin Ma ◽  
Jing Liu
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Liquid Metal ◽  
Biomedical Imaging ◽  
Liquid Metals ◽  
High Thermal Conductivity ◽  
High Electrical Conductivity ◽  
Good Adhesion ◽  
Basic Properties ◽  
Metallic Biomaterials

Liquid metals (LMs) not only retain the basic properties of metallic biomaterials, such as high thermal conductivity, high electrical conductivity, but also possess flexibility, flowability, deformability, plasticity, good adhesion, and...

A Study on Thermal Conductivity and Mechanical Properties of Al-Zn-Mg Aluminum Alloys

2012 ◽  
Vol 724 ◽  
pp. 169-172
Author(s):  
Je Sik Shin ◽  
Se Hyun Ko ◽  
Ki Tae Kim
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Aluminum Alloy ◽  
Aluminum Alloys ◽  
Precipitation Hardening ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet ◽  
High Electrical Conductivity ◽  
Conductivity Loss

In this paper, it was aimed to develop a new Al-Zn-Mg base aluminum alloy having high electrical conductivity, strength, and formability simultaneously. As a result, Al-Zn-Mg base low aluminum alloy sheet can be effectively strengthened without significant thermal conductivity loss by multiply alloying precipitation hardening elements and properly controlling production process parameters.

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