Porous aromatic polymer with good lithium storage capacity and high proton transmission efficiency, and preparation method and application thereof

A technology with porous fragrance and high transmission efficiency, applied in electrical components, electrochemical generators, secondary batteries, etc., can solve the problems of high proton transmission rate and interface resistance, and achieve simple process, reduce explosion, and small self-discharge Effect

Inactive Publication Date: 2019-05-07
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the technical problem of interfacial resistance between the solid electrolyte and the electrode of the all-solid electrolyte battery in the prior art, and provide a porous aromatic polymer and its preparation method and application. The porous aromatic polymer has the ability to withstand current High density, good safety performance, long cycle life and other advantages, the most prominent is its strong lithium storage capacity and high proton transmission rate

Method used

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  • Porous aromatic polymer with good lithium storage capacity and high proton transmission efficiency, and preparation method and application thereof
  • Porous aromatic polymer with good lithium storage capacity and high proton transmission efficiency, and preparation method and application thereof
  • Porous aromatic polymer with good lithium storage capacity and high proton transmission efficiency, and preparation method and application thereof

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preparation example Construction

[0059] The preparation method of the porous aromatic polymer with strong lithium storage ability and high proton transport efficiency of the present invention comprises the following steps:

[0060] Step 1: Mix the porous aromatic polymer with an organic solvent containing lithium salt, and stir for 8-15h at a stirring speed of 200-2000 r / min in an anhydrous and oxygen-free glove box at room temperature (25°C) to obtain mixture;

[0061] Among them, the organic solvent is not particularly limited, as long as it can achieve the dissolving function, preferably a mixture of EC, DMC and EMC with a mass ratio of 1:1:1; the mass ratio of lithium salt and porous aromatic polymer is not particularly limited, as long as it contains Both the lithium salt and the porous aromatic polymer can play an adsorption role, and the adsorption is at most supersaturated soaking adsorption, that is, the addition amount of the lithium salt is above the saturated adsorption amount of the porous aromat...

Embodiment 1

[0077] Preparation of porous aromatic polymers with strong lithium storage capacity and high proton transport efficiency:

[0078] Step 1. Add 70mg PAF-1 into a 20ml vial, then add an organic solvent containing LiPF6 to the vial and mix, and in an anhydrous and oxygen-free glove box, stir overnight at room temperature to obtain a mixture;

[0079] Among them, LiPF 6 The organic solvent consists of organic solvent and LiPF 6 Composition, LiPF 6 The concentration is 1M, and the organic solvent is a mixture of EC, DMC and EMC with a mass ratio of 1:1:1;

[0080] Step 2. In an anhydrous and oxygen-free glove box, the mixture is suction filtered through a glass membrane filter, the filter cake is recovered, heated and dried at 80°C for 10 hours under vacuum conditions, so that the organic solvent is completely volatilized to obtain strong lithium storage capacity and proton transport. Highly efficient porous aromatic polymers, denoted LiPF 6 @PAF-1, the yield is 407mg, i.e. LiP...

Embodiment 2

[0086] Preparation of solid electrolyte sheets:

[0087] Take 137 mg of LiPF prepared in Example 1 6 @PAF-1, put it into a tableting mold, press it with a pressure of 20KPa for 30 seconds, and make a wafer with a diameter of 14mm and a thickness of 0.58mm. This wafer is a solid electrolyte sheet.

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Abstract

The invention relates to a porous aromatic polymer with a good lithium storage capacity and high proton transmission efficiency, and a preparation method and application thereof, and belongs to the technical field of electrolyte materials. The invention solves the interface resistance between the solid electrolyte and the electrode of an all-solid electrolyte battery in the prior art. The porous aromatic polymer is a porous aromatic polymer where lithium salt is dispersed in pores. The porous aromatic polymer is ground into uniform powders to be placed in a tableting mold. Pressure is appliedto press the powders into sheets, thus, the solid electrolyte sheet is obtained. The porous aromatic polymer has excellent electrochemical performance, and the prepared solid electrolyte sheet can beapplied in an all-solid electrolyte lithium ion battery, achieves a conduction effect instead of the electrolyte and the diaphragm of the liquid electrolyte lithium ion battery, has high safety, largespecific energy, low self-discharge, no environmental pollution, a long cycle life, stable materials, high lithium storage performance and high proton transfer efficiency.

Description

technical field [0001] The invention belongs to the technical field of electrolyte materials, and in particular relates to a porous aromatic polymer with strong lithium storage capacity and high proton transmission efficiency, and a preparation method and application thereof. Background technique [0002] In today's society that attaches great importance to environmental protection and advocates the development of new energy to replace non-renewable energy, it is an inevitable choice for mankind to explore materials that can be used as new energy. As an important part of the new energy field, the battery industry has become a new hot spot in global economic development. At present, lithium-ion batteries have been widely used as an important energy source. Whether it is in the field of electronic communication or in the field of transportation, it plays an extremely important role and has a wide range of application prospects. [0003] A lithium ion battery is a secondary ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M10/0525
CPCY02E60/10
Inventor 贲腾裘式纶邹俊彦
Owner JILIN UNIV
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