Cathode of lithium ion battery, all-solid-state lithium ion battery, preparation method and electric device thereof

A lithium-ion battery, all-solid-state technology, applied in the direction of electrode carrier/current collector, electrode manufacturing, battery electrode, etc., can solve the problems of difficult and difficult to realize microcircuit integration, detachment, etc., and achieve the effect of low preparation cost

Inactive Publication Date: 2019-01-04
THE NORTHERN RES INST OF NJUST
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first purpose of the present invention is to provide a lithium ion battery positive electrode to alleviate the existing problems of cracking, falling off, and difficulty in integrating with microcircuits and being difficult and not resistant to high temperature in the existing positive electrode suitable for all-solid lithium ion batteries under high temperature annealing. Technical Issues of Flexible Substrate Bonding
[0005] The second object of the present invention is to provide an all-solid-state lithium ion battery and a preparation method thereof, so as to alleviate the cracking and falling off of the positive electrode active material film easily caused by the lithium-containing positive electrode material for the existing all-solid-state lithium-ion battery The technical problem of circuit integration and not easy to combine with flexible substrates that are not resistant to high temperatures

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
  • Cathode of lithium ion battery, all-solid-state lithium ion battery, preparation method and electric device thereof
  • Cathode of lithium ion battery, all-solid-state lithium ion battery, preparation method and electric device thereof
  • Cathode of lithium ion battery, all-solid-state lithium ion battery, preparation method and electric device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This embodiment is an all-solid-state thin-film lithium-ion battery, and its structure is as follows: figure 1 Shown, its preparation method comprises the following steps:

[0055] S1) The DC magnetron sputtering method is adopted, a pure Mn metal target is used as the target material, and stainless steel is used as the positive current collector 1 . After installing the target and positive current collector, close the sputtering chamber and evacuate the sputtering chamber to 1.0×10 -4 Below Pa, feed 100sccm argon and 20sccm oxygen, and then adjust the gas pressure in the chamber to 1Pa; set the DC sputtering power to 1.4W / cm 2 , the base distance of the target is 80 mm, pre-sputtering for 5 minutes to clean the impurities on the target surface, and sputtering for 3 hours at room temperature can directly obtain the manganese tetraoxide thin film 2 on the substrate;

[0056] S2) In the obtained Mn 3 o 4 On the basis of the thin film, the LiPON solid electrolyte thin ...

Embodiment 2

[0063] This embodiment is an all-solid-state thin-film lithium-ion battery, and its preparation method comprises the following steps:

[0064] S1) The DC magnetron sputtering method is adopted, a pure Mn metal target is used as the target material, and a platinum-coated glass sheet is used as the positive current collector. After installing the target and positive current collector, close the sputtering chamber and evacuate the sputtering chamber to 1.0×10 -4 Below Pa, feed 100sccm argon and 20sccm oxygen, and then adjust the gas pressure in the chamber to 1Pa; set the DC sputtering power to 1.4W / cm 2 , target base distance 80mm, pre-sputtering for 5 minutes to clean the impurities on the surface of the target, heating the substrate to 400°C and sputtering for 3 hours, the trimanganese tetraoxide thin film can be obtained directly on the substrate;

[0065] S2) In the obtained Mn 3 o 4 On the basis of the thin film, the LiPON solid electrolyte thin film is prepared by magne...

Embodiment 3

[0071] This embodiment is an all-solid-state thin-film lithium-ion battery, and its preparation method comprises the following steps:

[0072] S1) Use gold-plated stainless steel foil as the working electrode, platinum sheet as the counter electrode, Ag / AgCl as the reference electrode, and a mixed solution of 0.1M manganese acetate and 0.1M sodium sulfate as the electrolyte. Deposited for 15min, Mn was prepared directly on gold-plated stainless steel foil 3 o 4 film;

[0073] S2) in Mn 3 o 4 On the basis of the thin film, the LiPON solid electrolyte thin film is prepared by magnetron sputtering;

[0074] S3) On the basis of the solid electrolyte film, thermal evaporation equipment is used to vapor-deposit metal lithium to form a negative electrode active material film. Finally, magnetron sputtering is used to obtain a negative electrode current collector film, and an all-solid-state thin film lithium-ion battery is obtained after packaging.

[0075] Figure 9 Mn in Examp...

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

No PUM Login to view more

Abstract

The invention provides a cathode of a lithium ion battery, an all-solid-state lithium ion battery, a preparation method and an electric device thereof. The lithium ion battery cathode comprise a cathode current collector and a cathode material layer arrange on that surface of the cathode current collector, wherein the cathode active material in the cathode material layer is manganese tetroxide. The lithium-free positive electrode can alleviate cracking under high temperature annealing of the positive electrode suitable for all-solid-state lithium ion batteries, The technical problems of peeling off and difficult to integrate with microcircuits and difficult to combine with the flexible substrate which is not resistant to high temperature can achieve the technical effect of improving the application range of all-solid-state lithium ion batteries, and can reduce the cost of raw materials and preparation at the same time.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a positive electrode of a lithium ion battery, an all-solid lithium ion battery, a preparation method thereof, and an electrical device. Background technique [0002] The all-solid-state thin-film lithium battery is a new type of lithium-ion battery developed on the basis of traditional lithium-ion batteries. Its basic working principle is similar to that of traditional lithium-ion batteries, that is, Li + It comes out of the positive electrode and undergoes a reduction reaction at the negative electrode through the solid electrolyte; the discharge process is the opposite. All-solid-state thin-film lithium batteries can completely solve the safety problems of current commercial lithium-ion batteries, and have the advantages of ultra-long cycle life, wide operating temperature range, and extremely small self-discharge rate. Therefore, all-solid-state lithium batteries have been ...

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): H01M4/66H01M4/505H01M10/0525H01M10/0565
CPCH01M4/505H01M4/667H01M10/0525H01M10/0565Y02E60/10H01M4/0404H01M4/0426H01M4/13H01M4/139H01M4/502H01M10/0562H01M2300/0068H01M6/40H01M4/483H01M2300/0071H01M2300/008
Inventor 夏晖夏求应孙硕昝峰徐璟岳继礼
Owner THE NORTHERN RES INST OF NJUST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap