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

Liquid-state electrolyte-based secondary lithium battery without negative electrode

A secondary lithium battery and liquid electrolyte technology, applied in the manufacture of secondary batteries, non-aqueous electrolyte batteries, electrolyte batteries, etc., can solve the problems of low energy density, reduce the contact area, simplify the technology, and inhibit the generation of dendrites Effect

Active Publication Date: 2018-03-06
INST OF PHYSICS - CHINESE ACAD OF SCI
View PDF2 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Based on this, the object of the present invention is to solve the problem of low energy density of lithium-ion secondary batteries in the prior art, and to provide a negative-electrode secondary lithium battery

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
  • Liquid-state electrolyte-based secondary lithium battery without negative electrode
  • Liquid-state electrolyte-based secondary lithium battery without negative electrode
  • Liquid-state electrolyte-based secondary lithium battery without negative electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Using 10 μm copper foil as the negative current collector, the copper foil was immersed in 1% HNO 3 The aqueous solution was ultrasonically cleaned for 5 min to remove the oxide layer. The acid-treated copper foil was cleaned with ethanol and allowed to dry at room temperature. Subsequently, Ar ion beam etching was used to further remove the residual oxide layer on the surface. The treated copper foil was quickly transferred to a glove box, and the copper foil was cut into discs with a diameter of 15 mm by a punching machine in the glove box. The gold-sprayed sample was directly stored in the glove box, ready for the next electrochemical performance test (this material is counted as A1).

Embodiment 2

[0055] Using 10 μm copper foil as the negative current collector, the copper foil was immersed in 1% HNO 3 The aqueous solution was ultrasonically cleaned for 5 min to remove the oxide layer. The acid-treated copper foil was cleaned with ethanol and allowed to dry at room temperature. Subsequently, Ar ion beam etching was used to further remove the residual oxide layer on the surface. The treated copper foil was quickly transferred to a glove box, and the current collector was cut into discs with a diameter of 15 mm by a punching machine in the glove box. Gold was sprayed on the sample using a small magnetron sputtering device placed in a glove box, and deposited at a current of 1 mA for 60 s.

[0056] The sample after gold spraying was directly stored in the glove box, and was prepared for the next step of electrochemical performance test (this material was counted as A2).

Embodiment 3

[0058] Using 10 μm copper foil as the negative current collector, the copper foil was immersed in 1% HNO 3 The aqueous solution was ultrasonically cleaned for 5 min to remove the oxide layer. Clean the acid-treated copper foil with deionized water and ethanol, and dry it at room temperature after cleaning. Subsequently, Ar ion beam etching was used to further remove the residual oxide layer on the surface. The treated copper foil was quickly transferred to a glove box, and the current collector was cut into discs with a diameter of 15 mm by a punching machine in the glove box. A small magnetron sputtering device placed in a glove box was used to spray gold on the sample, and deposited at a current of 1 mA for 120 s. The sample after spraying gold is directly stored in the glove box, and is ready for the next step of electrochemical performance test (this material is counted as A3).

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 provides a liquid-state electrolyte-based secondary lithium battery without a negative electrode. The secondary lithium battery without the negative electrode comprises a lithium-embedded positive electrode material, a diaphragm, a liquid-state electrolyte, a positive current collector and a negative current collector, wherein a seed crystal layer is deposited on a surface of the negative current collector, and the liquid-state electrolyte comprises non-lithium metal ions. The invention also provides preparation method and application of the liquid-state electrolyte-based secondary lithium battery without the negative electrode. In the secondary lithium battery without the negative electrode, provided by the invention, a liquid-state electrolyte system is employed, the secondary lithium battery without the negative electrode can work in a circulation way, and dendrite generation can be effectively prevented; and moreover, a metal mechanical blocking layer of the secondarylithium battery without the negative electrode is not needed to be fabricated and packaged, and the secondary lithium battery without the negative electrode is simple in technology and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of batteries, and relates to a negative-electrode secondary lithium battery and a preparation method thereof, more specifically, to a negative-electrode secondary lithium battery based on a liquid electrolyte and a preparation method thereof. Background technique [0002] Since metal lithium has a very high theoretical capacity (3840mAh / g) and the lowest reduction potential, metal lithium becomes the most ideal negative electrode material for lithium batteries. Using metal lithium as the negative electrode can greatly improve the energy density of the battery. Taking the currently commercialized positive electrode materials as examples, they are mainly lithium iron phosphate, lithium manganese oxide and lithium nickel cobalt manganese oxide (ternary materials), and their reversible specific capacities are 155, 110 and 160mAh / g, respectively. The current commercialized graphite is used as a negative electrod...

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): H01M10/058H01M4/64H01M4/66H01M10/0566H01M10/0568
CPCH01M4/64H01M4/66H01M4/661H01M4/667H01M10/0566H01M10/0568H01M10/058Y02E60/10Y02P70/50
Inventor 俞海龙黄学杰詹元杰赵俊年
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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