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Method for improving service stability of fast ion conductor thermoelectric material

A technology of thermoelectric materials and ionic conductors, applied in the manufacture/processing of thermoelectric devices, thermoelectric devices, thermoelectric devices that only use the Peltier or Seebeck effect, etc., can solve problems such as changing the thermoelectric properties of materials

Inactive Publication Date: 2019-12-06
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the introduced "pinning ions" may also introduce additional electrons / holes, second phases, and change the initial thermoelectric properties of the material while improving service stability.

Method used

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  • Method for improving service stability of fast ion conductor thermoelectric material
  • Method for improving service stability of fast ion conductor thermoelectric material
  • Method for improving service stability of fast ion conductor thermoelectric material

Examples

Experimental program
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Effect test

Embodiment 1

[0046] The present invention selects p-type fast ion conductor thermoelectric material Cu 2-δ S(δ=0.02), to verify the proposed method to improve the service stability of fast ion conductor thermoelectric materials. The present invention prepared two Cu 2-δ S (δ = 0.02) thermoelectric arm. the first Cu 2-δ The S (δ=0.02) thermoelectric arm consists of only a section of thermoelectric material with a length of 10mm. the second Cu 2-δ The S (δ=0.02) thermoelectric arm consists of three sections of Cu with a length of 3.3mm. 2-δ S (δ=0.02) material composition, pass conductive platinum paste (platinum powder: 78-82wt%, bisphenol A type epoxy resin: 8-12wt%, anhydride curing agent: 1-3wt) between every two sections of adjacent materials %) to connect. Apply conductive platinum paste to the end surface of the material by brushing, and then heat up to 800°C in a vacuum atmosphere furnace to remove the organic solvent in the platinum paste to obtain an ion barrier layer (that i...

Embodiment 2

[0048] The present invention prepared two Cu 2-δ S (δ = 0.02) thermoelectric arm. the first Cu 2-δ The S (δ=0.02) thermoelectric arm consists of only a section of thermoelectric material with a length of 10 mm. the second Cu 2-δ The S (δ=0.02) thermoelectric arm consists of ten sections of Cu with a length of 1mm 2-δ S (δ=0.02) thermoelectric arm material composition, pass conductive platinum paste (platinum powder: 78-82wt%, bisphenol A type epoxy resin: 8-12wt%, acid anhydride curing agent: 1- 3wt%) for connection. Apply the conductive platinum paste to the end surface of the material by brushing, and then heat up to 800°C in a vacuum atmosphere furnace to remove the organic solvent in the platinum paste to obtain an ion barrier layer (that is, a platinum layer with a thickness of 0.2mm). . Such as Figure 7 As shown, the ten segment Cu 2-δ The thermoelectric arm made of S (δ=0.02) material is better than a section of Cu 2-δ The Seebeck coefficient of the thermoelec...

Embodiment 3

[0050] The present invention selects N-type fast ion material thermoelectric material Ag 9 GaSe 6 The proposed method to improve the service stability of fast ion conductor thermoelectric materials is verified. The present invention prepared two Ag 9 GaSe 6 Thermoelectric arms, the first thermoelectric arm is composed of only one section of thermoelectric material with a length of 10mm, and the second thermoelectric arm is composed of three sections of 3.3mm long thermoelectric arms, connected with conductive platinum paste in the middle. Concrete experimental method is identical with embodiment 1, and thermoelectric property measurement result is as follows Figure 9 . It can be concluded from the figure that the three segments of Ag 9 GaSe 6 The conductivity and Seebeck coefficient of the thermoelectric arm composed of materials are compared with that of a section of Ag 9 GaSe 6 The material composition of the thermoelectric legs changes only slightly. This indicate...

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Abstract

The invention provides a method for improving the service stability of a fast ion conductor thermoelectric material. At least one ion barrier layer is distributed between any two adjacent fast ion conductor thermoelectric material segments in a thermoelectric arm formed by connecting n fast ion conductor thermoelectric material segments along the direction of an external field, so as to improve the service stability of the fast ion conductor thermoelectric material, wherein n is greater than or equal to 2; the material of the ion barrier layer is at least one of nickel, titanium, molybdenum, platinum, palladium, and carbon elements; the fast ion conductor thermoelectric material is one of Cu2-[delta]S, Cu2-[delta]Se, Cu2-[delta]Te, Ag2Se, CuAgSe, Cu5FeS4, CuCrSe2, Ag9GaSe6, and Ag8GeSe6, wherein 0 < [delta] < 0.1; and the length of the fast ion conductor thermoelectric material is from 0.1 mm to 20 mm.

Description

technical field [0001] The invention relates to a method for improving the service stability of a fast ion conductor thermoelectric material, in particular to a method for improving the service stability of a fast ion conductor thermoelectric material under the action of an external field (electric field, temperature field, magnetic field, etc.) while maintaining excellent thermoelectric performance The method belongs to the field of thermoelectric materials and devices. Background technique [0002] As a new type of renewable clean energy technology, thermoelectric conversion technology has attracted extensive attention in the world in recent years. It uses the Seebeck effect and Peltier effect of semiconductor materials to directly convert heat energy and electric energy into each other. It has the characteristics of long life, high reliability, environmental friendliness, wide operating temperature range, and effective use of low-density energy. Recycling of industrial w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/32H01L35/34H10N10/17H10N10/01
CPCH10N19/101H10N10/01H10N10/17
Inventor 仇鹏飞史迅陈立东毛滔顾明黄仲夫
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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