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A kind of soft clad metal graphite medium temperature energy storage battery and preparation method thereof

A metal graphite, energy storage battery technology, applied in the manufacture of electrolyte batteries, battery electrodes, secondary batteries, etc., can solve the problem that metal graphite batteries cannot be made into soft packs, and achieve good electrochemical performance, high specific energy, and safety. good effect

Active Publication Date: 2021-04-20
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The soft pack battery process mainly uses polypropylene material for sealing, but the polypropylene material begins to soften at about 150°C or above, and the metal graphite battery using a single tetrachloroaluminate as electrolyte generally operates at a temperature above 150°C, that is, this This metal graphite battery cannot be made into a soft pack

Method used

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  • A kind of soft clad metal graphite medium temperature energy storage battery and preparation method thereof
  • A kind of soft clad metal graphite medium temperature energy storage battery and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] refer to figure 1 , a soft metal-graphite medium-temperature energy storage battery, the internal cell of the battery is made of four layers of wound active materials, and the four layers of active materials are positive electrode 3, first separator 51, negative electrode 4 and second Diaphragm 52. Wherein, the positive electrode 3 is graphite, and the negative electrode is metal Ni whose electronegativity is higher than that of Al. The positive electrode 3 and the negative electrode 4 are separated by the first separator 51, and the function of the second separator 52 is to isolate the electrode material from the casing 6, The negative electrode 4 is led out of the housing 6 through the negative pole tab 2 , and the positive pole 3 is drawn out of the housing 6 through the positive pole tab 1 . Electrolyte is injected into the casing, and the gap of the casing is sealed with a gasket to improve the sealing effect.

[0041] refer to figure 2 , LiAlCl 4 and NaAlCl ...

Embodiment 2

[0043] A soft metal-graphite medium-temperature energy storage battery. The internal cell of the battery is made of four layers of wound active materials. The four layers of active materials are positive electrode 3, first separator 51, negative electrode 4 and second separator in sequence from inside to outside. 52. Wherein, the positive electrode 3 is graphene, the negative electrode is metal Fe with higher electronegativity than Al, the positive electrode 3 and the negative electrode 4 are separated by the first diaphragm 51, and the function of the second diaphragm 52 is to isolate the electrode material from the casing 6 , the negative electrode 4 is drawn out of the case 6 through the negative pole tab 2 , and the positive pole 3 is drawn out of the case 6 through the positive pole tab 1 . Electrolyte is injected into the casing, and the gap of the casing is sealed with a gasket to improve the sealing effect.

[0044] refer to figure 2 , LiAlCl 4 and NaAlCl 4 The me...

Embodiment 3

[0046] A soft metal-graphite medium-temperature energy storage battery. The internal cell of the battery is made of four layers of wound active materials. The four layers of active materials are positive electrode 3, first separator 51, negative electrode 4 and second separator in sequence from inside to outside. 52. Wherein, the positive electrode 3 is carbon nanotubes, the negative electrode is metal Cr with higher electronegativity than Al, the positive electrode 3 and the negative electrode 4 are separated by the first diaphragm 51, and the function of the second diaphragm 52 is to isolate the electrode material from the casing 6 Next, the negative electrode 4 is drawn out of the case 6 through the negative tab 2 , and the positive pole 3 is drawn out of the case 6 through the positive tab 1 . Electrolyte is injected into the casing, and the gap of the casing is sealed with a gasket to improve the sealing effect.

[0047] refer to figure 2 , LiAlCl 4 and NaAlCl 4 The ...

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Abstract

The invention discloses a soft-coated metal-graphite medium-temperature energy storage battery and a preparation method thereof. The soft-coated metal-graphite medium-temperature energy storage battery includes a casing filled with an electrolyte, and the inner wall of the casing is sequentially provided with positive electrodes, The first separator, the negative electrode and the second separator, the positive electrode is made of graphite material, the negative electrode is made of metal X with higher electronegativity than Al, and the electrolyte is LiAlCl 4 , NaAlCl 4 and KAlCl 4 Two or three mixed molten salts; by LiAlCl 4 , NaAlCl 4 and KAlCl 4 The method of mixing two or three molten salts to form a low-melting-point electrolyte with a melting point lower than 150°C reduces the operating temperature of the metal-graphite battery, so that the metal-graphite battery can be assembled using the existing pouch battery process. The operating temperature of the battery is greatly reduced, allowing the battery to be assembled using a mature pouch battery process.

Description

technical field [0001] The invention belongs to the technical field of electrochemical energy storage batteries, and in particular relates to a soft-coated metal-graphite medium-temperature energy storage battery and a preparation method thereof. Background technique [0002] After my country's economy experienced a period of extensive and rapid growth with large-scale resource input, overcapacity reduction and structural adjustment have become the key content of my country's economic transformation into an intensive development model at this stage. Among them, the energy issue is the most critical issue in many fields of economic development. Its main content is to eliminate backward and inefficient energy output, improve the utilization efficiency of existing energy output, vigorously develop renewable energy such as wind energy and solar energy, and build a smart grid to Solving the distribution regulation and efficient utilization of electric energy, etc., all of these p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/38H01M4/583H01M4/133H01M4/134H01M4/1393H01M4/1395H01M10/0562H01M10/058
CPCH01M4/133H01M4/134H01M4/1393H01M4/1395H01M4/38H01M4/583H01M10/0562H01M10/058H01M2300/0022Y02E60/10Y02P70/50
Inventor 宁晓辉代涛廖陈正单智伟
Owner XI AN JIAOTONG UNIV