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A kind of microphase separated high temperature anhydrous ion conductive nanocomposite and its preparation and application

A technology of micro-phase separation and conductive nano-technology, which is applied in non-aqueous electrolytes, circuits, fuel cells, etc., to achieve the effects of ensuring efficient delivery, easy control of product process quality, and conducive to industrial production

Active Publication Date: 2022-07-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention uniformly disperses the nanometer-sized multi-acid molecular clusters in the bicontinuous microphase separation structure formed by the polyethylene glycol-crosslinked polystyrene block copolymer, and obtains a non-conductive material with high electrical conductivity and high thermal stability at the same time. Water solid electrolyte materials, which have no dependence on the water content in the environment, solve the safety problems of traditional organic liquid electrolyte materials and the limitations of existing solid electrolyte materials that require high humidity environments, and broaden the limits of fuel cells and lithium-ion batteries in extreme Application prospects in the environment

Method used

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  • A kind of microphase separated high temperature anhydrous ion conductive nanocomposite and its preparation and application
  • A kind of microphase separated high temperature anhydrous ion conductive nanocomposite and its preparation and application
  • A kind of microphase separated high temperature anhydrous ion conductive nanocomposite and its preparation and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Dissolve 0.9 g polyethylene glycol-based macroinitiator (the molecular weight of polyethylene glycol monomethyl ether is 5000 g / mol), 2 mL styrene, 0.5 mL divinylbenzene and 3 mg azobisisobutyronitrile in 1 mL acetonitrile In the double-row tube, the oxygen was removed by liquid nitrogen freezing-vacuuming cycle three times, and after 70 °C oil bath heating and stirring reaction for 12 hours, the obtained solid was put into a vacuum oven for drying for 12 hours to obtain a composite material.

Embodiment 2

[0061] Put 0.1 g molecular cluster H 3 [PW 12 O 40 ]·6H 2 O, 0.9g polyethylene glycol-based macroinitiator (the molecular weight of polyethylene glycol monomethyl ether is 5000g / mol), 2mL styrene, 0.5mL divinylbenzene and 3mg azobisisobutyronitrile were dissolved in 1mL In acetonitrile, the oxygen was removed by liquid nitrogen freezing-vacuuming cycle three times on a double-row tube, and after the reaction was heated and stirred in an oil bath at 70 °C for 12 hours, the obtained solid was put into a vacuum oven for drying for 12 hours to obtain high temperature anhydrous ionic conductivity. Nanocomposites.

[0062] The optical diagram of the high-temperature anhydrous ion conductive nanocomposite prepared in this example is as follows: figure 2 shown.

Embodiment 3

[0064] 0.3857g molecular cluster H 3 [PW 12 O 40 ]·6H 2 O, 0.9g polyethylene glycol-based macroinitiator (the molecular weight of polyethylene glycol monomethyl ether is 5000g / mol), 2mL styrene, 0.5mL divinylbenzene and 3mg azobisisobutyronitrile were dissolved in 1mL In acetonitrile, the oxygen was removed by liquid nitrogen freezing-vacuuming cycle three times on a double-row tube, and after the reaction was heated and stirred in an oil bath at 70 °C for 12 hours, the obtained solid was put into a vacuum oven for drying for 12 hours to obtain high temperature anhydrous ionic conductivity. Nanocomposites.

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Abstract

The invention belongs to the technical field of solid electrolytes, and discloses a microphase-separated high-temperature anhydrous ion conductive nanocomposite material and its preparation and application. The high-temperature anhydrous ion conductive nano-composite material is mainly prepared from molecular clusters, polyethylene glycol-based macromolecular initiators, styrene and divinylbenzene monomers. The high-temperature anhydrous ion conductive nano-composite material of the invention has a bicontinuous microphase separation structure, good electrical conductivity, high thermal stability, good mechanical performance and high safety, and overcomes the safety of traditional solid-state electrolyte materials under high temperature conditions. It avoids the shortcomings of the existing solid electrolyte materials, which are easy to exude from the polymer matrix, and broadens the application of fuel cells and lithium-ion batteries in extreme environments. The method of the invention is simple and the quality is easy to control. The prepared composites are used as solid electrolytes for fuel cells and lithium-ion batteries.

Description

technical field [0001] The invention belongs to the technical field of solid electrolytes, and in particular relates to a microphase-separated high-temperature anhydrous ion conductive nanocomposite material and a preparation method and application thereof. Background technique [0002] The energy and environmental problems faced by contemporary society are becoming more and more serious. Clean and efficient electrochemical power generation devices - fuel cells and lithium-ion batteries have become an effective way to meet such challenges. The ion conductor material is the core component of the ion exchange membrane fuel cell and the lithium ion battery, which undertakes the important task of isolating the cathode and anode of the battery and conducting ions. Compared with the shortcomings of traditional organic liquid electrolyte materials such as flammability, toxicity, and limited electrochemical stability window, solid electrolytes have higher thermal stability, environm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1053H01M10/0565H01M10/0525
CPCH01M8/1053H01M10/0565H01M10/0525H01M2300/0082Y02E60/50
Inventor 吴梓成郑昭殷盼超
Owner SOUTH CHINA UNIV OF TECH
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