Sulfonic polymer eutectic solid electrolyte and preparation method thereof

A solid electrolyte and sulfonic acid-based technology, applied in solid electrolytes, non-aqueous electrolytes, non-aqueous electrolyte batteries, etc., can solve the problems of failure to meet practical application requirements, breakthrough improvement in electrolyte conductivity, high dissociation transition energy barrier, etc. problems, achieve the effect of realizing large-scale continuous production and equipment, expanding the scope of use, and improving ion transmission efficiency

Active Publication Date: 2021-09-07
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the room temperature conductivity of most single-ion conductor polymer electrolytes is always lower than 10 -5 S / cm, unable to meet the actual application requirements
[0004] The conductivity of single-ion conductor polymer electrolytes cannot achieve a breakthrough improvement, the main reason is that the dissociation transition energy barrier of metal ions in the electrolyte is high, and this problem needs to be solved

Method used

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  • Sulfonic polymer eutectic solid electrolyte and preparation method thereof
  • Sulfonic polymer eutectic solid electrolyte and preparation method thereof
  • Sulfonic polymer eutectic solid electrolyte and preparation method thereof

Examples

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Effect test

Embodiment 1

[0059] Polystyrene sulfonate and the acetamide at different mass ratings were mixed with acetamide, and different mass ratios were 1 / 0.8, 1 / 1, 1 / 1 / 1 / 2, and then placed under a high temperature environment (80 ° C) stir, After the mutual dissolution, cool to room temperature, resulting in a uniform mass of polystyrenesulfonate and acetamide polymer, melt electrolyte (see figure 2 ).

[0060] The polystyrenesulfonate preparation process: aqueous solution of polystyrene sulfonic acid is blended with zinc sheet, stirred for 1 day, filtered, and dried in vacuo. The structure of the product is characterized, that is, the zinc content in the sample is titrated, theoretical calculations and ICP measurements, as shown in Table 1.

[0061] Table 1 Zinc concentration test in zinc polystyrenesulfonate

[0062] Test Methods WT.% a

WT.% b

WT.% c

Zinc ion content 17.2 16.7 17.0

[0063] a Theoretical calculation b ICP analysis calculation c Zinc ion titration

...

Embodiment 2

[0069] 1.00g of polystyrenesulfonate, 1.00 g of acetamide and 0.05 g of TiO 2 The powder is mixed at room temperature, and then placed under a high temperature environment (80 ° C) stir, the mutually soluble union, cool to room temperature, to obtain zinc polystyrenesulfonate, acetamide, and TiO 2 Polymer coputical electrolyte.

Embodiment 3

[0071] 0.45 g of polystyrene sulfonate and 0.50 g of acetamide were mixed, and then stirred at a high temperature environment (80 ° C), the mutiny was mixed, cooled to room temperature to obtain polystyrene sulfonate and acetamide Polymer coputical electrolyte.

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Abstract

The invention discloses a sulfonic polymer eutectic solid electrolyte and a preparation method thereof. The sulfonic polymer solid electrolyte comprises at least one sulfonic high-molecular polymer and amido compound ligand, and can also comprise an inorganic inert filler, a fast ion conductor and an organic porous filler. The sulfonic high-molecular polymer may include an aliphatic sulfonic acid high-molecular polymer, an aromatic sulfonic acid high-molecular polymer and a silicon-based sulfonic acid high-molecular polymer. The amide compound ligand may include an aliphatic amide compound, an aromatic amide compound, and a silicon-containing amide compound.

Description

Technical field [0001] The present invention is in the field of polymer electrolyte material, particularly a sulfonic acid group, to a polymer solid electrolyte and co-melt preparation method and application. Background technique [0002] Ion batteries as a portable power supply system to provide essential support for the development of energy and convenience of life of modern technology. However, commercial ion batteries using a liquid electrolyte multiple material, the presence of such release of flammable material safety hazard, the metal dendrite growth and short-circuited cell temperature tolerance defects and poor, a serious impediment to the promotion and application of the corresponding cell . Therefore, the development of solid state electrolyte material become the focus of widespread concern. [0003] The solid electrolyte material comprises a polymer solid electrolyte and an inorganic solid electrolyte. Compared to an inorganic solid electrolyte, polymer solid electrol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M10/0525H01M10/05
CPCH01M10/0565H01M10/0525H01M10/05H01M2300/0085H01M2300/0082H01M2220/10H01M2220/20H01M2220/30Y02P70/50
Inventor 崔光磊张尧剑赵井文王佳徐红霞
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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