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A kind of high specific energy composite electrode sheet for thermal battery and preparation method thereof

A composite electrode and thermal battery technology, which is applied in the electrodes, battery electrodes, circuits and other directions of primary batteries, can solve the problems of harsh requirements and lack of long-term working ability of composite electrode sheets, and achieves the goal of helping rapid activation and facilitating Large-scale production, good thermal shock effect

Active Publication Date: 2022-07-12
GUIZHOU MEILING POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, thermal batteries have strict requirements on composite electrodes, and only FeS can be used in engineering applications. 2 、CoS 2 Composite sheet of positive electrode material, but the working voltage of its single battery is below 2V; the halides in the conventional halide positive electrode composite sheet are not compatible with molten salt, and do not have the ability to work for a long time

Method used

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  • A kind of high specific energy composite electrode sheet for thermal battery and preparation method thereof
  • A kind of high specific energy composite electrode sheet for thermal battery and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] The preparation of a composite electrode sheet for a high specific energy thermal battery includes the following steps:

[0027] 1) Drying of the halide, first the halide NiCl 2 ·6H 2 O put it into 200 ℃ blast drying to remove water, and then put it into 450 ℃ inert gas ((argon, nitrogen) environment for sintering, and then pulverize it through a 100-mesh sieve and bottle it for use;

[0028] 2) Recombination of halides, firstly the NiCl prepared in step (1) 2 Add electrolyte to mix well, then add adsorbent MgO to mix well, and finally add carbon nanotubes, halide: electrolyte: adsorbent: carbon nanotube = 85:6:6:3, to obtain halide composite cathode material;

[0029] 3) RSEI material preparation, mix carbon nanotubes:electrolyte evenly at a weight ratio of 80:20, and finally put it at 450°C to dry in an inert gas environment, and the inert gas is argon or nitrogen;

[0030] 4) Preparation of diaphragm material, the electrolyte and MgO are mixed according to the wei...

Embodiment 2

[0034] The preparation of a composite electrode sheet for a high specific energy thermal battery includes the following steps:

[0035] 1) halide impurity removal, first remove the halide NiCl 2 ·6H 2 O put it into 200 ℃ blast drying to remove water, and then put it into 450 ℃ inert gas ((argon, nitrogen) environment for sintering, and then pulverize it through a 100-mesh sieve and bottle it for use;

[0036] 2) Recombination of halides, firstly the NiCl prepared in step (1) 2Add electrolyte and mix well, then add adsorbent MgO and mix well, and finally add carbon nanotubes, halide: electrolyte: adsorbent: carbon nanotube = 85:6:6:3;

[0037] 3) RSEI material preparation, mix the carbon nanotubes:electrolyte ratio according to 80:20, and finally put it into 200 ℃ and dry it in an inert gas, the inert gas is argon or nitrogen;

[0038] 4) Preparation of diaphragm material, the electrolyte and MgO are mixed according to the weight ratio of 7:3, and then dried in an inert gas ...

Embodiment 3

[0042] The preparation of a composite electrode sheet for a high specific energy thermal battery includes the following steps:

[0043] 1) halide impurity removal, first remove the halide NiCl 2 ·6H 2 O put it into 200 ℃ blast drying to remove water, and then put it into 450 ℃ inert gas ((argon, nitrogen) environment for sintering, and then pulverize it through a 100-mesh sieve and bottle it for use;

[0044] 2) Recombination of halides, firstly the NiCl prepared in step (1) 2 Add electrolyte and mix well, then add adsorbent MgO and mix well, and finally add carbon nanotubes, halide: electrolyte: adsorbent: carbon nanotube = 90:4:4:2;

[0045] 3) RSEI material preparation, mix the carbon nanotubes:electrolyte ratio according to 80:20, and finally put it into 200 ℃ and dry it in an inert gas, the inert gas is argon or nitrogen;

[0046] 4) Preparation of diaphragm material, the electrolyte and MgO are mixed according to the weight ratio of 3:2, and then dried in an inert gas...

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Abstract

The present application discloses a high specific energy composite electrode sheet for thermal batteries in the technical field of thermal batteries. The composite electrode sheet is the basic unit of a single thermal battery. The performance of the composite electrode sheet ultimately determines the performance of the unit cell. The sheet is mainly composed of diaphragm material, RSEI material and halide composite positive electrode material, wherein the RSEI material is mixed evenly by carbon nanotubes and electrolyte according to the weight ratio of 70-95:5-30, and placed in an inert gas at 100 ℃ ~ 600 ℃ Obtained by drying, the electrolyte is 9.56±1% LiF, 22±1% LiCl by weight 2 and a ternary molten salt composed of 68.44±1% LiBr. The composite electrode sheet of the present invention has higher specific capacity, compared with conventional CoS 2 The specific capacity of the composite sheet is increased by 15%; the specific capacity of the conventional halide composite sheet is increased by 50%.

Description

technical field [0001] The invention belongs to the technical field of thermal batteries, and in particular relates to a high specific energy composite electrode sheet for thermal batteries and a preparation method thereof. Background technique [0002] A thermal battery is a thermally activated reserve battery that relies on its own heating system to heat and melt a non-conductive solid state salt electrolyte into an ionic conductor and enter a working state. Thermal batteries have the characteristics of activation at any angle, fast activation speed, long storage time, and strong ability to withstand environmental mechanical conditions. They have been widely used in weapon systems, etc. In addition, thermal batteries have also received attention in civilian applications. Research reports on aircraft emergency power supply, fire alarm power supply, and underground high temperature prospecting power supply. [0003] With the continuous development and updating of military e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/58H01M4/583H01M4/06H01M4/08H01M6/36
CPCH01M4/366H01M4/48H01M4/582H01M4/583H01M4/06H01M4/08H01M6/36Y02P70/50
Inventor 唐军冉岭王毅唐立成赵文莉潘志鹏王京亮赵洪楷李云伟
Owner GUIZHOU MEILING POWER SUPPLY CO LTD
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