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A kind of diaphragm of zinc-silver secondary battery and its preparation method and zinc-silver secondary battery

A secondary battery, zinc-silver technology, applied to secondary batteries, battery components, circuits, etc., can solve the problems of zinc-silver secondary batteries such as short life, waste of resources, high cost, etc., to improve cycle stability, prolong Lifespan, growth-inhibiting effect

Active Publication Date: 2021-08-17
SHENZHEN AUTOMOTIVE RES INST BEIJING INST OF TECH (SHENZHEN RES INST OF NAT ENG LAB FOR ELECTRIC VEHICLES)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, zinc-silver secondary batteries also have obvious disadvantages, such as short life and high cost.
Zinc-silver secondary batteries have a short lifespan, and their application causes a great waste of resources

Method used

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  • A kind of diaphragm of zinc-silver secondary battery and its preparation method and zinc-silver secondary battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment proposes a zinc-silver secondary battery diaphragm, which is formed by embedding a quaternized polyphenylene ether membrane with porous silicon-aluminum oxide. The amount of porous silicon-aluminum oxide is 5% of the weight of the quaternary ammonium salt anion exchange membrane. And the pore size of the porous silicon aluminum oxide is less than 2nm.

[0041] In this example, the zinc-silver secondary battery diaphragm is used for assembling button-type zinc-silver batteries for performance testing, and the specific preparation process is as follows:

[0042] Add 200 nM of NH 4-X zeolite was calcined at 350°C for 2 h to obtain porous silica-alumina oxide; 1 g of quaternized polyphenylene ether was dissolved in 100 mL nitrogen-nitrogen dimethylformamide (DMF), and 0.05 g of porous silica-alumina oxide was added to The above mixed solution is stirred and ultrasonically treated to obtain a uniformly mixed film solution; the prepared film solution is poure...

Embodiment 2

[0044] This embodiment proposes a zinc-silver secondary battery diaphragm, which is formed by embedding a quaternized polyphenylene ether membrane with porous silicon-aluminum oxide. The amount of porous silicon-aluminum oxide is 0.5% of the weight of the quaternary ammonium salt anion exchange membrane. And the pore size of the porous silicon aluminum oxide is less than 2nm.

[0045] In this example, the zinc-silver secondary battery diaphragm is used for assembling button-type zinc-silver batteries for performance testing, and the specific preparation process is as follows:

[0046] Add 200 nM of NH 4 -X zeolite was calcined at 350°C for 2 h to obtain porous silica-alumina oxide; 1 g of quaternized polyphenylene ether was dissolved in 100 mL nitrogen-nitrogen dimethylformamide (DMF), and 0.005 g of porous silica-alumina oxide was added to The above mixed solution is stirred and ultrasonically treated to obtain a uniformly mixed film solution; the prepared film solution is p...

Embodiment 3

[0048] This embodiment proposes a zinc-silver secondary battery diaphragm, which is formed by embedding a quaternized polyphenylene ether membrane with porous silicon-aluminum oxide. The amount of porous silicon-aluminum oxide is 20% of the weight of the quaternary ammonium salt anion exchange membrane. And the pore size of the porous silicon aluminum oxide is less than 2nm.

[0049] In this example, the zinc-silver secondary battery diaphragm is used for assembling button-type zinc-silver batteries for performance testing, and the specific preparation process is as follows:

[0050] Add 200 nM of NH 4 -X zeolite was calcined at 350°C for 2 h to obtain porous silica-alumina oxide; 1 g of quaternized polyphenylene ether was dissolved in 100 mL of nitrogen-nitrogen dimethylformamide (DMF), and 0.2 g of porous silica-alumina oxide was added to To the above mixed solution, after stirring, ultrasonic treatment, etc., a uniformly mixed membrane solution was obtained; the prepared m...

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Abstract

The present application discloses a zinc-silver secondary battery diaphragm, a preparation method thereof and a zinc-silver secondary battery. The zinc-silver secondary battery diaphragm is formed by embedding a quaternized polymer anion exchange membrane with a porous filler. The porous filler Including at least one of inorganic oxides and metal-organic frameworks; the amount of the porous filler is 0.5%-20% of the weight of the quaternized polymer anion exchange membrane, and the pore size of the porous filler is less than 2nm. The zinc-silver secondary battery separator of the present application can not only suppress the loss of the active material of the positive electrode, but also prevent silver ions from passing through the separator to form dendrites at the negative electrode and cause a short circuit, thereby improving the cycle stability of the battery and prolonging the service life of the battery ; At the same time, it can also rectify the ion flow of hydroxide to make it evenly transmitted, ensuring that the zinc oxide on the electrode plane is transferred to Zn(OH) 4 2‑ The conversion is carried out uniformly, and its local aggregation is inhibited, thereby inhibiting the growth of zinc dendrites and ensuring the normal operation of the battery.

Description

technical field [0001] The invention relates to the field of zinc-silver secondary batteries, in particular to a zinc-silver secondary battery diaphragm, a preparation method thereof, and a zinc-silver secondary battery. Background technique [0002] Aqueous zinc-ion batteries directly use metal zinc as the counter electrode, which is non-toxic, low in price, and high in specific capacity (820 mAhg -1 ) and other characteristics, so there are more and more researches on zinc-ion batteries in the world. Zinc-ion batteries currently being studied mainly include zinc-silver secondary batteries, zinc-nickel batteries, zinc-cobalt batteries, and zinc-copper batteries. Among them, the zinc-silver secondary battery is due to its high energy density (350Wh kg -1 、750 Wh L -1 ), stable output voltage, high power density, safety, reliability and other characteristics, it is widely used in military, aerospace and other special fields. However, zinc-silver secondary batteries also h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/414H01M50/446H01M50/403H01M10/36
CPCH01M10/36Y02E60/10
Inventor 崔彦辉王文伟
Owner SHENZHEN AUTOMOTIVE RES INST BEIJING INST OF TECH (SHENZHEN RES INST OF NAT ENG LAB FOR ELECTRIC VEHICLES)
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