Bayesian optimization-based design of defect gamma-graphyne nanoribbons with high thermoelectric conversion efficiency

An n-type material with intrinsically higher thermoelectric conversion efficiency than Bi2Te3 in the low-grade waste-heat range has finally been developed.

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Improved Reversibility of Liquid Lithium-Ammonia Solutions in Vacuum Tube

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.605.306 ◽

2014 ◽

Vol 605 ◽

pp. 306-309

Author(s):

Miae Kim ◽

Ji Beom Kim ◽

Joon Hyeon Jeon

Keyword(s):

Power Generation ◽

Thermoelectric Power ◽

Conversion Efficiency ◽

High Efficiency ◽

Liquid Lithium ◽

Thermoelectric Power Generation ◽

Thermoelectric Conversion ◽

Pressure Equilibrium ◽

Long Time ◽

Solution Reaction

Lithium-ammonia (Li-NH3) solutions are possible to be successfully made under the vacuum condition but there still remains a problem of undergoing stable and reliable decomposition in vacuum for high-efficiency thermoelectric power generation. This paper describes a new method, which uses a tube giving pressure equilibrium between closed ends, for improving the thermoelectric conversion efficiency of Li-NH3solutions in vacuum. Thermoelectric experimental results show that solution reaction in the tube proceeds stably and efficiently, and this potentially leads to the improved reversibility of the reaction for deriving the long-time, high-efficiency thermoelectric power.

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Key properties of inorganic thermoelectric materials – tables (version 1)

Journal of Physics Energy ◽

10.1088/2515-7655/ac49dc ◽

2022 ◽

Author(s):

Robert Freer ◽

Dursun Ekren ◽

Tanmoy Ghosh ◽

Kanishka Biswas ◽

Pengfei Qiu ◽

...

Keyword(s):

Thermoelectric Properties ◽

Conversion Efficiency ◽

Thermoelectric Materials ◽

Room Temperature ◽

Temperature Data ◽

Inorganic Materials ◽

Peak Performance ◽

Thermoelectric Conversion ◽

Wide Range ◽

Higher Temperature

Abstract This paper presents tables of key thermoelectric properties, which define thermoelectric conversion efficiency, for a wide range of inorganic materials. The 12 families of materials included in these tables are primarily selected on the basis of well established, internationally-recognised performance and their promise for current and future applications: Tellurides, Skutterudites, Half Heuslers, Zintls, Mg-Sb Antimonides, Clathrates, FeGa3–type materials, Actinides and Lanthanides, Oxides, Sulfides, Selenides, Silicides, Borides and Carbides. As thermoelectric properties vary with temperature, data are presented at room temperature to enable ready comparison, and also at a higher temperature appropriate to peak performance. An individual table of data and commentary are provided for each family of materials plus source references for all the data.

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