A method for rapid preparation of high-performance GeTe thermoelectric materials

By employing low-energy ball milling, cold pressing, high-energy ball milling, and cyclic solid sintering methods, combined with inert atmosphere protection and discharge plasma sintering technology, the problems of high cost, long preparation time, and poor controllability of GeTe-based thermoelectric materials have been solved, enabling the rapid preparation and performance improvement of high-performance GeTe thermoelectric materials.

CN117464011BActive Publication Date: 2026-05-26DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
Filing Date
2022-07-21
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing methods for preparing GeTe-based thermoelectric materials are costly, time-consuming, and poorly controllable, resulting in unstable thermoelectric performance.

Method used

GeTe thermoelectric materials were prepared by using low-energy ball milling, cold pressing, high-energy ball milling and cyclic solid sintering, combined with inert atmosphere protection and discharge plasma sintering technology.

Benefits of technology

This has enabled the rapid and low-cost preparation of GeTe thermoelectric materials, improved the thermoelectric properties and compressive strength of the materials, and expanded the application fields of thermoelectric materials.

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Abstract

This invention discloses a method for rapidly preparing high-performance GeTe thermoelectric materials, wherein the thermoelectric material has the general chemical formula Ge. x M 1‑ x Te y N 1‑y Where M is one or more of the elements Cd, Mn, Cr, Fe, Cu, Sb, Ag, In, Pb, and Zn, and N is one or more of the elements Se, I, S, Si, Br, and C, where x and y are the molar numbers, 0.6 <x≀1,0.5<y≀1。Ge x M 1‑x Te y N 1‑y The preparation methods mainly include low-energy ball milling mixing, cold pressing, high-energy ball milling, and spark plasma sintering. The Ge described in this invention... x M 1‑x Te y N 1‑y Thermoelectric materials have the advantages of simple, rapid, and safe preparation methods, and can effectively reduce thermal conductivity, improve power factor, and enhance compressive strength, thus expanding the application fields of thermoelectric materials.
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