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Modified particle loaded fiber diaphragm for thermal battery and preparation method of modified particle loaded fiber diaphragm

A thermal battery and modification technology, which is applied to battery components, circuits, electrical components, etc., can solve problems such as low loading efficiency and small loading of modified particles, and achieve diffusion and uniform distribution. The method is simple and widely used The effect of applying the foreground

Active Publication Date: 2022-01-28
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fiber diaphragm loaded with modified particles for thermal batteries and a preparation method thereof, which can solve the problem of small loading capacity of modified particles and low loading efficiency when the fiber diaphragm used for thermal batteries is loaded with modified particles in the existing method. low level problem

Method used

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  • Modified particle loaded fiber diaphragm for thermal battery and preparation method of modified particle loaded fiber diaphragm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment provides a method of loading MGO modified particles for a thermal cell BN fiber membrane, and specifically includes the following steps:

[0024] (1) Weigh 0.65G mg (NO 3 ) 2 · 6h 2 O, and transfer to the surface of the thermal cell;

[0025] (2) Low melting point metal salt Mg will carry 3 ) 2 · 6h 2 The thermal cell of O transfer from the BN fiber diaphragm to the oven at 100 ° C under the protection of nitrogen, so that low melting metal salt Mg (NO 3 ) 2 · 6h 2 O Uniformly distributed in the BN fiber diaphragm of the thermal cell to make a load of alkali Mg (NO 3 ) 2 BN fiber diaphragm for thermal cells;

[0026] (3) Load a basic mg (NO 3 ) 2 The thermal cell is transferred to the muffle furnace in the muffle furnace, calcined at 450 ° C for 2 h, so that the base mg (NO 3 ) 2 Decompose at 450 ° C, and MgO modified particles were generated in a BN fiber diaphragm in a thermal cell to prepare a BN fiber diaphragm for a thermal cell loaded with MgO modified...

Embodiment 2

[0028] This embodiment provides a BN fiber diaphragm load Al for a thermal cell 2 O 3 Modified particle preparation method, specifically includes the following steps:

[0029] (1) Weigh 0.74G Al (NO 3 ) 3 · 9h 2 O, and transfer to the surface of the thermal cell;

[0030] (2) Low melting point metal salt Al (NO) 3 ) 3 · 9h 2 The thermal cell of O was transferred to the oven under an oven under an oven at 100 ° C insulation treatment for 2 h, so that the low melting point metal salt Al (NO 3 ) 3 · 9h 2 O Uniformly distributed in the BN fiber diaphragm of the thermal cell to make a load Al (NO 3 ) 3 BN fiber diaphragm for thermal cells;

[0031] (3) A load is Al (NO 3 ) 3 The thermal cell is transferred to the muffle furnace with a BN fiber membrane, calcined at 200 ° C for 2 h, so that Al (NO 3 ) 3 Decompose at 200 ° C, and generate Al in the primary bn fiber diaphragm in the thermal cell 2 O 3 Modified particles, make loads with Al 2 O 3 BN fiber diaphragm of modified particles. T...

Embodiment 3

[0033] This embodiment provides a thermal battery mullite (Al 2 O 3 And complexes and SIO 2 And the mixture of the complex) Fiber diaphragm load MgO modified particles, including the steps of:

[0034] (1) Weigh 0.32G mg (NO 3 ) 2 · 6h 2 O, and transfer to the heat battery of φ32mm mullite fiber diaphragm diaphragm;

[0035] (2) Low melting point metal salt Mg will carry 3 ) 2 · 6h 2 The thermal cell of O was transferred to a mixed gas of nitrogen and argon in a mixed gas treatment for 3 h under a mixed gas of nitrogen and argon, so that low melting point metal salt Mg (NO 3 ) 2 · 6h 2 O Uniformly distributed in the Mohuoite fiber diaphragm in the thermal cell to make a load of alkali Mg (NO 3 ) 2 Thermal cell with mullite fiber diaphragm;

[0036] (3) Load a basic mg (NO 3 ) 2 The thermal cell is transferred to the muffle furnace with a mullite furnace, calcined at 450 ° C for 2 h, so that the base mg (NO 3 ) 2 Decompose at 450 ° C, and MgO modified particles were generated in t...

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Abstract

The invention discloses a modified particle loaded fiber diaphragm for a thermal battery and a preparation method of the modified particle loaded fiber diaphragm, and belongs to the technical field of preparation of a thermal battery electrolyte. The preparation method comprises the following specific steps: heating metal low-melting-point salt corresponding to loaded particles to above the melting point, fully compounding the low-melting-point metal salt and the thermal battery fiber diaphragm through heat preservation, and then heating the metal low-melting-point salt to above the decomposition temperature of the metal low-melting-point salt in an electric furnace or an atmosphere furnace to form corresponding oxide or fluoride, and achieving the purpose of quickly and uniformly loading the modified particles in the fiber diaphragm for the thermal battery. According to the invention, the modified particles can be rapidly and uniformly loaded on the surface of the fiber diaphragm for the thermal battery in quantity, and the preparation method is simple and has wide application prospect.

Description

Technical field [0001] The present invention belongs to the preparation of fiber diaphragm for the thermal cell, and is specifically involved in a thermal cell load-modified particle, a fiber membrane, and a preparation method thereof. Background technique [0002] The thermal cell is a thermal activation, which is mainly composed of positive electrode, electrolyte, negative electrode, heating material, etc., has the advantages of short activation time, long storage time, wide operating temperature range, high than power, widely used in various military and civil Field. [0003] At present, the thermal cell mainly uses particles or fiber membranes as a molten salt electrolyte adsorbent and positive and negative isolation layers. When the fiber diaphragm is used as the electrolyte adsorbent and the positive and negative electrode isolation layers, it has the advantages of small thickness and easy molding, and can be widely used in thermal cell production manufacturing. However, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/403H01M50/431H01M50/44H01M6/36
CPCH01M50/403H01M50/431H01M50/44H01M6/36Y02E60/10
Inventor 张晨光曹勇兰伟王超谢勇赵宇高晨阳崔艳华崔益秀刘效疆
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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