Novel fluorine ion thermal battery and preparation method thereof

A fluoride ion, thermal battery technology, applied in the manufacture of primary battery equipment, primary battery, primary battery use/maintenance, etc., can solve the problems of lack of capacity, increase the production cost of thermal batteries, etc. The effect of high specific energy and improved discharge capacity

Inactive Publication Date: 2020-06-30
GUIZHOU MEILING POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, there is no report on the use of fluoride as a positive electrode material, but in the actual test process, the capacity of the fluoride positive electrode material has no advantage, and the negative electrode material must be lithium alloy, which increases the production cost of thermal batteries

Method used

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  • Novel fluorine ion thermal battery and preparation method thereof
  • Novel fluorine ion thermal battery and preparation method thereof
  • Novel fluorine ion thermal battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A new type of fluorine ion thermal battery, the new type of fluorine ion thermal battery is composed of a substrate 1, a positive electrode sheet 2, a diaphragm sheet 3, a negative electrode sheet 4, a current collector sheet 5, and a heating sheet 6, and the diaphragm sheet 3 is a ternary The perfluorinated diaphragm sheet is formed by mixing and sintering electrolyte and asbestos fiber modified by magnesium oxide, and the positive electrode sheet 2 is made of fluoride, conductive material, and electrolyte.

[0062] Further, the electrolyte is a high-conductivity ternary perfluorinated electrolyte, namely LiF-NaF-KF; the fluoride is Bi-Co-F x composite; the analytical grade fluoride starting material, dehydrated in an argon atmosphere at 220°C, followed by molar ratio BiF 3 :CoF 3 = 1:1 mixing, adding 1% lithium-silicon alloy powder and 5% ultra-fine light magnesium oxide at the same time, and finally keeping it in an argon atmosphere at 450°C for 2 hours; the negativ...

Embodiment 2

[0077] A new type of fluorine ion thermal battery, the new type of fluorine ion thermal battery is composed of a substrate 1, a positive electrode sheet 2, a diaphragm sheet 3, a negative electrode sheet 4, a current collector sheet 5, and a heating sheet 6, and the diaphragm sheet 3 is a ternary The perfluorinated diaphragm sheet is formed by mixing and sintering electrolyte and asbestos fiber modified by magnesium oxide, and the positive electrode sheet 2 is made of fluoride, conductive material, and electrolyte.

[0078] Further, the electrolyte is a high-conductivity ternary perfluorinated electrolyte, namely LiF-NaF-KF; the fluoride is Bi-CoF X Composite; the mass percentage of the fluoride is more than 99%, analytical grade fluoride raw material, water is removed in an argon atmosphere at 220 ° C, and then the molar ratio BiF 3 :CoF 3 = 1:1 mixing, adding 1% lithium-silicon alloy powder and 5% ultra-fine light magnesium oxide at the same time, and finally keeping it in ...

Embodiment 3

[0093] A new type of fluorine ion thermal battery, the new type of fluorine ion thermal battery is composed of a substrate 1, a positive electrode sheet 2, a diaphragm sheet 3, a negative electrode sheet 4, a current collector sheet 5, and a heating sheet 6, and the diaphragm sheet 3 is a ternary The perfluorinated diaphragm sheet is formed by mixing and sintering electrolyte and asbestos fiber modified by magnesium oxide, and the positive electrode sheet 2 is made of fluoride, conductive material, and electrolyte.

[0094] Further, the electrolyte is a high-conductivity ternary perfluorinated electrolyte, namely LiF-NaF-KF; the fluoride is CuF 2 , FeF 3 and CoF 3 ; The fluoride is an analytical grade raw material, water is removed in an argon atmosphere at 220 ° C, and then the molar ratio BiF 3 :CoF 3 = 1:1 mixing, adding 1% lithium-silicon alloy powder and 5% ultra-fine light magnesium oxide at the same time, and finally keeping it in an argon atmosphere at 450°C for 2 hou...

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Abstract

The invention discloses a novel fluorine ion thermal battery, which is composed of a substrate (1), a positive electrode sheet (2), a diaphragm sheet (3), a negative electrode sheet (4), a current collecting sheet (5) and a heating sheet (6); the diaphragm sheet (3) is a ternary perfluorinated diaphragm sheet and is formed by mixing and sintering an electrolyte and magnesium oxide modified asbestos fibers, and the positive electrode sheet (2) is prepared from fluoride, a conductive material, and electrolyte. The novel fluorine ion thermal battery is good in chemical stability, and capacity loss does not exist in the high-temperature working process; the specific energy is high, and the specific energy of the thermal battery can be improved; the fluorine ion discharge capacity can be improved, and other metals except lithium alloy can be selected as the negative electrode, so that the cost of the thermal battery is reduced; and the open-circuit voltage of the thermal battery monomer isgreater than 2.8 V, so that the battery space height can be reduced.

Description

technical field [0001] The invention belongs to the technical field of thermal battery production and processing, and in particular relates to a novel fluorine ion thermal battery and a preparation method thereof. Background technique [0002] Thermal battery is a kind of molten salt electrolyte reserve battery. The electrolyte is a non-conductive solid at normal temperature. When in use, the pyrotechnic heat source inside the unit thermal battery is ignited by hitting the cap or igniting the electric ignition head to melt the electrolyte and activate the thermal battery. Group, so as to provide the required current and voltage to the electrical equipment. Existing electrolytes for thermal batteries are generally a mixture of binary E (LiCl, KCL) or ternary all-lithium (LiCl, LiBr, and LiF). The conductive ions in the electrolyte are lithium ions, and the positive electrode material is FeS. 2 or CoS 2 . The reaction of the two electrodes occurs at different positions. Whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/36H01M6/00H01M6/18H01M6/50H01M4/62H01M4/58H01M2/16
CPCH01M4/5815H01M4/624H01M6/005H01M6/183H01M6/36H01M6/50H01M50/431
Inventor 唐军占志强贾怀杰赵文莉谢天舒赵贵平
Owner GUIZHOU MEILING POWER SUPPLY CO LTD
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