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High-temperature fused salt battery

A high-temperature molten salt and battery technology, applied in the field of molten salt, can solve the problems of corrosion, leakage, processing cost, fragility, etc., and achieve the effects of avoiding battery short circuit or open circuit, reducing fluidity, improving cycle charge and discharge, and safety.

Active Publication Date: 2019-02-12
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of fragility, corrosion leakage and high processing cost in the existing high-temperature molten salt batteries in the above-mentioned prior art, the present invention aims to provide a high-temperature molten salt battery

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 Reference numeral 1 in the structural schematic diagram of the high-temperature molten salt battery shown is silver positive electrode; 2 is silver negative electrode; 3 is paste double electrolyte formed by mixing potassium carbonate and zirconia micron powder containing yttrium oxide; 4 is iron ; 5 is a high temperature sealant; 6 is a corundum tube.

[0028] Iron is deposited on the surface of the silver negative electrode by chemical deposition, and then placed in a corundum tube; at 950 ° C, potassium carbonate and solid electrolyte powder (zirconia micron powder containing yttrium oxide, that is, yttrium oxide doped in oxide The paste double electrolyte formed by mixing the yttrium oxide stabilized zirconia formed in zirconium) is added therein, wherein the content of potassium carbonate is 60%, and the mole percentage content of yttrium oxide in the solid electrolyte powder is 8mol%, and the The particle size is 2 microns; the silver positive el...

Embodiment 2

[0031] Such as figure 1 In the schematic diagram of the structure of the high-temperature molten salt battery shown, reference numeral 1 is a platinum positive electrode; 2 is a silver negative electrode; 3 is a paste double electrolyte formed by mixing potassium carbonate and zirconia micron powder containing yttrium oxide; 4 is copper ; 5 is a high temperature sealant; 6 is a corundum tube.

[0032] Copper is deposited on the surface of the silver negative electrode by chemical deposition, and then put into the corundum tube; at 950 ° C, the paste double electrolyte formed by mixing potassium carbonate and zirconia micron powder containing yttrium oxide is added to it, of which potassium carbonate The content of yttrium oxide in the solid electrolyte powder is 40%, the content of yttrium oxide in the solid electrolyte powder is 5mol%, and the particle size of the powder is 20 microns; the silver positive electrode is placed on the surface of the paste electrolyte, after cool...

Embodiment 3

[0035] Such as figure 1 In the schematic diagram of the structure of the high-temperature molten salt battery shown, reference numeral 1 is a silver positive electrode; 2 is a silver negative electrode; 3 is a paste double electrolyte formed by mixing sodium carbonate and zirconia micron powder containing yttrium oxide; 4 is zinc ; 5 high temperature sealant; 6 is corundum tube.

[0036] Zinc is deposited on the surface of the silver negative electrode by chemical deposition, and then placed in a corundum tube; at 900 ° C, the paste double electrolyte formed by mixing potassium carbonate and zirconia micron powder containing yttrium oxide is added to it, of which sodium carbonate The content of yttrium oxide in the solid electrolyte powder is 50%, the content of yttrium oxide in the solid electrolyte powder is 8mol%, and the particle size of the powder is 0.1 micron; The silver positive electrode is placed on the surface of the paste electrolyte, after cooling to room temperat...

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Abstract

The invention relates to a high-temperature fused salt battery which comprises a positive pole, pasty dual electrolyte and a negative pole, wherein the positive pole is exposed in air, the pasty dualelectrolyte is prepared from fused salt and solid electrolyte powder by mixing, the fused salt is potassium carbonate and / or sodium carbonate, the solid electrolyte powder is zirconium oxide micron powder containing yttrium oxide, and the negative pole is separated from the positive pole by the pasty dual electrolyte. The high-temperature fused salt battery disclosed by the invention is a high-temperature fused salt battery which can be applied to large-scale power grid energy storage and is based on the fused salt and the solid electrolyte powder material. The pasty dual electrolyte disclosedby the invention can be easily prepared from the fused salt and the solid electrolyte powder through direct mixing, so that the pasty dual electrolyte has the advantages of higher oxygen ion conductivity, lower fluidity and good filling ability; furthermore, the short circuit and open circuit phenomena between the positive pole and the negative pole of the battery are effectively avoided, circular charge-discharge property of the battery is remarkably improved, and the processing manufacturing cost of the high-temperature fused salt battery is obviously reduced.

Description

technical field [0001] The present invention relates to molten salt, more specifically to a high temperature molten salt battery. Background technique [0002] Renewable energy sources such as solar and wind power are playing an increasingly important role in modern electricity supplies. However, the intermittency and volatility of solar and wind power severely limit the role of these renewable energy sources in modern power systems. The development of a large-scale energy storage system based on efficient and cheap battery technology can fundamentally solve the above-mentioned instability problem of renewable energy generation, thereby supporting the efficient use of solar and wind energy and avoiding renewable energy such as solar photovoltaic power generation and wind power generation. Waste of resources. Molten salt battery is a battery energy storage technology that uses high-temperature molten salt to achieve battery energy storage. Its cost is low, and its capacity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/39
CPCH01M10/399Y02E60/10
Inventor 彭程张诗雨关成志肖国萍王建强
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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