Metal ion supplementing composite alloy powder as well as preparation method and application thereof

A composite alloy and metal ion technology, which is applied in the direction of electrical components, electrochemical generators, battery electrodes, etc., to achieve the effects of low cost, improved stability, and improved performance

Inactive Publication Date: 2019-11-22
BEIJING WELION NEW ENERGY TECH CO LTD
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no lithium supplement additive that can exist stably in the air and is compatible with the current battery manufacturing process

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
  • Metal ion supplementing composite alloy powder as well as preparation method and application thereof
  • Metal ion supplementing composite alloy powder as well as preparation method and application thereof
  • Metal ion supplementing composite alloy powder as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 As shown, lithium cobaltate, A1 (see Table 1), acetylene black, and polyvinylidene fluoride are mixed according to the mass ratio of 91:5:2:2, N-methylpyrrolidone is added, and the mixture is stirred at high speed to obtain a uniform positive electrode slurry. And double-sided coating on 12 μm aluminum foil to obtain a positive electrode sheet, dried at 90°C for 4 hours to obtain a positive electrode sheet S1, rolled and punched for later use.

Embodiment 2

[0039]Mix lithium cobaltate, A2 (see Table 1), acetylene black, and polyvinylidene fluoride in a mass ratio of 90:6:2:2, add N-methylpyrrolidone, and stir the mixture at high speed to obtain a uniform positive electrode slurry The material was coated on 12 μm aluminum foil on both sides, and dried at 70°C for 6 hours to obtain the positive electrode sheet S2, which was rolled and punched for later use.

Embodiment 3

[0041] Mix NCM532, A3 (see Table 1), SP, and polyvinylidene fluoride according to a mass ratio of 92:4:2:2, add N-methylpyrrolidone, and stir the mixture at high speed to obtain a uniform positive electrode slurry, and Double-sided coating on a 12 μm aluminum foil to obtain a positive electrode sheet, dried at 70°C for 8 hours to obtain a positive electrode sheet S3, rolled and punched for later use.

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
sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses metal ion supplementing composite alloy powder. The composite alloy powder comprises: alloy AxBy powder particles and a protective layer M covering the surfaces of the alloy AxBy powder particles, wherein A is one of Li, Na, Mg and K; B is one or more of Mg, Ca, Al, Ge, Sn, Sb, Zn, Si, Si / C, SiOz and SiOz / C materials; wherein AxBy is an alloy, an intermetallic compound or asolid solution of A and B, and the protective layer M is a single-layer protective layer or a double-layer protective layer composed of one or more of a metal simple substance, a metal oxide, carbon,carbonate of A, silicate of A or carbonate containing metal elements in B. The metal ions compensated by the alloy powder can meet the requirements of the battery on the active metal ions, so that the performance of the battery is obviously improved.

Description

technical field [0001] The invention relates to the technical field of metal ion batteries, in particular to a composite alloy powder supplemented with metal ions and its preparation method and application. Background technique [0002] Metal-ion batteries have the advantages of high voltage, long life and high energy density, and have been widely used in consumer electronics, energy storage systems, power systems, etc., but how to improve their energy density has become an obstacle that limits their further application and development. One of the technical bottlenecks. [0003] Taking lithium-ion batteries as an example, during the first charging process of lithium-ion batteries, when the SEI film is formed on the surface of the positive and negative electrodes, some active lithium ions will be irreversibly consumed, reducing the discharge capacity of the battery. Due to the lack of reversible active lithium ions, the positive electrode material is greatly wasted, which li...

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): H01M4/36H01M4/38H01M4/62H01M4/134H01M10/0525H01M10/42
CPCH01M4/134H01M4/366H01M4/38H01M4/62H01M10/0525H01M10/4235Y02E60/10
Inventor 黄杰刘娜张振宇张坤李振飞
Owner BEIJING WELION NEW ENERGY TECH CO LTD
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