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

Negative pole active substance, method for producing same, and nonaqueous secondary battery

A technology of negative electrode active material and manufacturing method, which is applied in the direction of active material electrode, secondary battery, electrode manufacturing, etc., can solve the problems of low conductivity and low conductivity of negative electrode active material, and achieve high load characteristics and high long-term reliability. , the effect of excellent discharge rate characteristics

Active Publication Date: 2019-04-02
MURATA MFG CO LTD
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, since silicon is a semiconductor, the electrical conductivity is inherently low, and SiO x is an oxide, so the conductivity is lower
Therefore, the conductivity of the negative electrode active material as a whole is very low

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
  • Negative pole active substance, method for producing same, and nonaqueous secondary battery
  • Negative pole active substance, method for producing same, and nonaqueous secondary battery
  • Negative pole active substance, method for producing same, and nonaqueous secondary battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 2. Example 1 (negative electrode active material of the present invention, method for producing the same, and non-aqueous secondary battery)

Embodiment 2

[0035] 3. Example 2 (Application example of the non-aqueous secondary battery of Example 1)

[0036] 4. Other

[0037]

[0038] In the method for producing a negative electrode active material of the present invention, the nickel-containing solution preferably contains a nickel acetate salt. However, it is not limited to such a form, and any nickel-containing material (eg, nickel carbonate, nickel nitrate, nickel sulfate, etc.) can be used as long as it is a material capable of preparing a solution.

[0039] In the production method of the negative electrode active material of the present invention including the preferred aspect, the heat treatment may be performed at 600° C. to 1,000° C. for 1 hour or longer. In addition, in the production method of the negative electrode active material of the present invention including these preferred aspects, the reducing atmosphere is preferably an inert gas atmosphere containing hydrogen, but it is not limited to this, and an inert g...

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
electrical resistivityaaaaaaaaaa
electrical resistivityaaaaaaaaaa
Login to View More

Abstract

The purpose of the present invention is to provide a negative pole active substance which displays sufficient high-speed charge-discharge properties and cycle properties, which improves the conductivity and structural stability of the active substance having an island-sea structure, and which has a peel-resistant surface stabilized structure; a method for producing the negative pole active substance; and a nonaqueous secondary battery comprising a negative pole having the negative pole active substance. This negative pole active substance (10) is formed from particles comprising a core part (11) and a covering layer (14) that covers at least a portion of the surface of the core part (11). The core part (11) comprises a nickel silicide material (12) and a silicon oxide material (13) and thecoating layer (14) comprises a nickel silicide material.

Description

technical field [0001] The present invention relates to a negative electrode active material, a method for producing the same, and a non-aqueous secondary battery. Background technique [0002] In recent years, the demand for high capacity, high cycle characteristics, and high load characteristics of lithium ion secondary batteries has been increasing. x It is difficult for a negative electrode active material formed from an active material to fully satisfy these requirements. SiO formed based on a non-homogenization reaction (unhomogenization treatment) x The active substance usually has a sea-island structure. Here, the silicon fine particles correspond to the islands, and the SiO x Equivalent to the sea. Also, since silicon is a semiconductor, its electrical conductivity is inherently low, and SiO x It is an oxide, so the conductivity is lower. Therefore, the electrical conductivity of the entire negative electrode active material is very low. [0003] In order to ...

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): H01M4/38H01M4/36H01M4/48
CPCH01M2004/027H01M4/364H01M4/366H01M4/386H01M4/525H01M10/0525H01M4/0471H01M4/1395H01M4/1391Y02E60/10H01M4/38H01M4/48H01M4/36H01B1/06H01M4/045H01M4/131H01M4/134H01M2220/20H01M2220/30
Inventor 伊藤大辅
Owner MURATA MFG CO LTD
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