Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Integrated composite oxygen electrode, and preparation method and application thereof

A technology of oxygen electrodes and catalysts, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of complex electrode preparation and high energy consumption, achieve high specific capacity and cycle performance, reduce interface impedance, and low interface impedance

Inactive Publication Date: 2021-07-16
TIANJIN POLYTECHNIC UNIV
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of electrodes in this battery is complicated, high temperature sintering is required, and energy consumption is high.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Integrated composite oxygen electrode, and preparation method and application thereof
  • Integrated composite oxygen electrode, and preparation method and application thereof
  • Integrated composite oxygen electrode, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation method of the integrated composite oxygen electrode comprises the following steps:

[0044] (1) Preparation of electrolyte membrane slurry: dissolve polyoxyethylene in acetonitrile, add LiTFSI under stirring, then add inorganic electrolyte (Garnet type Li 6.4 La 3 Zr 1.4 Ta 0.6 o 12 ) to make a uniform mixed solution, and continue stirring for 12 hours at 60°C;

[0045] The Mv of polyoxyethylene=60w;

[0046] The molar ratio of polyoxyethylene to LiTFSI is 16:1;

[0047] The mass ratio of polyoxyethylene to acetonitrile is 1:13;

[0048] The mass of the inorganic electrolyte is 10% of the total mass of the polyoxyethylene and the inorganic electrolyte;

[0049] (2) Preparation of composite binder slurry: dissolve polyoxyethylene in N-methylpyrrolidone, add LiTFSI under stirring, then add inorganic electrolyte (Garnet type Li 6.4 La 3 Zr 1.4 Ta 0.6 o 12 ) to make a uniform mixed solution, and continue stirring for 12 hours at 60°C;

[0050] T...

Embodiment 2

[0060] The preparation method of the integrated composite oxygen electrode comprises the following steps:

[0061] (1) Preparation of electrolyte membrane slurry: dissolve polyoxyethylene in acetonitrile, stir at 60°C, add LiClO 4 , then add the inorganic electrolyte (Garnet type Li 6.5 La 3 Zr 1.5 Ta 0.5 o 12 ) to make a uniform mixed solution, and continue to stir for 16h;

[0062] The Mv of polyoxyethylene=80w;

[0063] Polyoxyethylene and LiClO 4 The molar ratio is 10:1;

[0064] The mass ratio of polyoxyethylene to acetonitrile is 1:9;

[0065] The mass of the inorganic electrolyte is 30% of the total mass of the polyoxyethylene and the inorganic electrolyte;

[0066] (2) Preparation of composite binder slurry: dissolve polyoxyethylene in N-methylpyrrolidone, stir at 60°C, add LiClO 4 , then add the inorganic electrolyte (Garnet type Li 6.5 La 3 Zr 1.5 Ta 0.5 o 12 ) to make a uniform mixed solution, and continue to stir for 16h;

[0067] The Mv of polyoxye...

Embodiment 3

[0077] The preparation method of the integrated composite oxygen electrode comprises the following steps:

[0078] (1) Preparation of electrolyte membrane slurry: dissolve polyoxyethylene in acetonitrile, stir at 60°C, add LiClO 4 , then add the inorganic electrolyte (Garnet type Li 6.75 La 3 Zr 1.75 Ta 0.25 o 12 ) to make a uniform mixed solution, and continue to stir for 14h;

[0079] The Mv of polyoxyethylene=70w;

[0080] Polyoxyethylene and LiClO 4 The molar ratio is 20:1;

[0081] The mass ratio of polyoxyethylene to acetonitrile is 1:10;

[0082] The mass of the inorganic electrolyte is 20% of the total mass of the polyoxyethylene and the inorganic electrolyte;

[0083] (2) Preparation of composite binder slurry: dissolve polyoxyethylene in N-methylpyrrolidone, stir at 60°C, add LiClO 4 , then add the inorganic electrolyte (Garnet type Li 6.75 La 3 Zr 1.75 Ta 0.25 o 12 ) to make a uniform mixed solution, and continue to stir for 14h;

[0084] The Mv of p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an integrated composite oxygen electrode, and a preparation method and application thereof. The preparation method comprises the following steps: dissolving polyoxyethylene in acetonitrile, and adding lithium salt and inorganic electrolyte to prepare uniform electrolyte membrane slurry; dissolving polyoxyethylene in N-methyl pyrrolidone, and adding lithium salt and inorganic electrolyte to prepare composite binder slurry; grinding the composite binder slurry and a catalyst, uniformly coating a current collector with the composite binder slurry and the catalyst, and drying to obtain a composite oxygen electrode; and pouring the electrolyte membrane slurry on the composite oxygen electrode, slicking and drying to obtain the integrated composite oxygen electrode. According to the integrated oxygen electrode, the composite electrolyte material with the ion conducting characteristic is used for replacing an inert binder, a lithium ion continuous transmission channel from the oxygen electrode to the electrolyte is constructed, low oxygen electrode / electrolyte interface impedance is achieved, a three-phase reaction interface in the oxygen electrode is expanded, and the charge-discharge cycle performance of the solid-state lithium-oxygen battery is improved.

Description

technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to an integrated composite oxygen electrode, a preparation method and an application. Background technique [0002] Solid-state lithium metal battery (SSLB) is a new type of battery system that is very promising to replace traditional lithium-ion batteries. The difference between the two is that lithium-ion batteries use carbon-based electrodes and liquid organic electrolytes, while solid-state batteries use solid-state Electrolyte (SSE) and lithium metal anode, which have higher energy density and are non-flammable, with high safety. Solid Lithium Oxygen (Li-O 2 ) battery (SSLOB) has a semi-open structure, which can maximize the advantages of high energy density of solid-state lithium metal batteries. In addition, based on the intrinsic high stability and mechanical strength of SSE, SSLOB can also suppress the irreversible side reactions and the accumulation of ins...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/86H01M12/08
CPCH01M4/88H01M4/8828H01M4/8657H01M12/08
Inventor 宋世栋张德权许永强赵宁波阮艳莉梅东海
Owner TIANJIN POLYTECHNIC UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com