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Polyacid-based electrolyte conductor material as well as preparation method and application thereof

A technology of conductor materials and electrolytes, applied in the field of polyacid-based electrolyte conductor materials and their preparation, can solve problems such as gaps in conductivity, and achieve the effects of low cost, simple preparation methods, and good processability

Pending Publication Date: 2020-12-29
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the researchers blended polyacids with polymers to prepare a series of conductor materials, which have improved stability, but there is still a big gap between the conductivity and commercial conductor materials. How to prepare ultra-high conductivity Electrolyte conductor materials present a major challenge for researchers

Method used

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  • Polyacid-based electrolyte conductor material as well as preparation method and application thereof
  • Polyacid-based electrolyte conductor material as well as preparation method and application thereof
  • Polyacid-based electrolyte conductor material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Dissolve 1.0 g of polyacid in 9.0 g of polyethylene glycol (PEG) with a relative molecular weight of 400 in a melt at 67° C. to obtain blend A; heat and stir blend A at 67° C. for 12 h, and react After cooling to room temperature, the transparent polyacid-based electrolyte conductor material is prepared, denoted as PEG400-10%PW 12 .

Embodiment 2

[0056] Dissolve 2.0 g of polyacid in 8.0 g of polyethylene glycol (PEG) with a relative molecular weight of 400 in a melt at 67° C. to obtain blend A; heat and stir blend A at 67° C. for 12 h, and react After cooling to room temperature, the transparent polyacid-based electrolyte conductor material is prepared, denoted as PEG400-20%PW 12 .

Embodiment 3

[0058] Dissolve 3.0 g of polyacid in 7.0 g of polyethylene glycol (PEG) with a relative molecular weight of 400 in a melt at 67° C. to obtain blend A; heat and stir blend A at 67° C. for 12 h, and react After cooling to room temperature, the transparent polyacid-based electrolyte conductor material is prepared, denoted as PEG400-30%PW 12 .

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Abstract

The invention discloses a polyacid-based electrolyte conductor material as well as a preparation method and application thereof, and particularly discloses two preparation methods, namely a solid-state melting method and a solvent method. According to the polyacid-based electrolyte conductor material prepared by the invention, polyacid and a polymer form a three-dimensional network through hydrogen bond interaction, so effective transfer of protons is realized. When the polyacid mass ratio is 70%, the conductivity of the conductor material can reach 1.01*10 <-2> Scm < 1 > (-80 DEG C). In the aspect of mechanical properties, viscosity of the sample is 273 Pa.s, and safety of the sample as an electrolyte is guaranteed. Due to the shearing thinning behavior, the polyacid-based electrolyte conductor material has good processability.

Description

technical field [0001] The invention belongs to the field of battery materials, and in particular relates to a polyacid-based electrolyte conductor material and its preparation method and application. Background technique [0002] Improving the proton conductivity of polymer electrolytes is the key to improving the efficiency of fuel cells and secondary batteries. At present, the commercialized proton conductor material in proton exchange membrane fuel cells is perfluorosulfonic acid (Nafions). Nafions have extremely high proton conductivity (>10 -2 S cm -1 ). However, Nafions are expensive and have poor stability and mechanical properties. Therefore, it is an urgent problem to develop conductor materials that can replace Nafions. The development of electrolyte conductor materials with good conductivity, mechanical properties and processing properties has far-reaching significance for the development of batteries and capacitors. [0003] Polyoxometalates (POMs), als...

Claims

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Application Information

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IPC IPC(8): H01M8/1018H01M8/1069H01M8/1072H01M10/0525H01M10/0566H01G11/58
CPCH01M8/1069H01M8/1072H01M8/1018H01M10/0566H01M10/0525H01G11/58H01M10/056C08G65/48Y02E60/50Y02E60/10
Inventor 郑昭蔡林坤殷盼超
Owner SOUTH CHINA UNIV OF TECH
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