Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing transition metal composite oxide, transition metal composite oxide prepared thereby, and lithium composite oxide prepared using same

A technology for composite oxides and manufacturing methods, applied in chemical instruments and methods, nickel compounds, manganese compounds, etc., can solve the problems of reduced density and reduced tap density, achieve high tap density, improve particle density, The effect of high capacity

Active Publication Date: 2016-05-18
IUCF HYU (IND UNIV COOP FOUNDATION HANYANG UNIV)
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when the nickel-manganese-chromium composite oxide is produced by the above-mentioned co-precipitation method, when the amount of nickel increases, the compactness between the primary particles decreases during the formation of the initial grains, thereby reducing the tap density.

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
  • Method for preparing transition metal composite oxide, transition metal composite oxide prepared thereby, and lithium composite oxide prepared using same
  • Method for preparing transition metal composite oxide, transition metal composite oxide prepared thereby, and lithium composite oxide prepared using same
  • Method for preparing transition metal composite oxide, transition metal composite oxide prepared thereby, and lithium composite oxide prepared using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Initial NaOH was injected at a ratio of 2.5L / 9g of distilled water, and the pH of the reaction solution was adjusted to 11.9, and then the central part was supplied with a composition ratio of Ni:Co:Mn of 85:5:10 to form a solution through coprecipitation reaction Particles with a radius of 0.2um were produced. A surface portion forming solution having a composition ratio of Ni:Co:Mn of 60:15:25 was produced, and the aqueous metal salt solution for forming the central portion and the aqueous metal salt solution for forming the surface portion were mixed so that the mixing ratio was changed from 100v% : 0v% to 0v%: 100v% was gradually changed, and at the same time, the chelating agent and the alkaline aqueous solution were mixed and supplied to the reactor, and the transition metal composite oxide particles were produced.

[0054] The particle size and the particle size distribution at the end of the reaction after 30 minutes have been measured after the start of the co-...

Embodiment 2

[0057] A central part forming solution with a composition ratio of Ni:Co:Mn of 95:2:3 was prepared, and the initial stage NaOH was added at a ratio of 2.5L / 10g of distilled water, and the pH of the reaction solution was adjusted to 11.9, and the reaction was carried out by coprecipitation The reaction produced transition metal composite oxide particles with a radius of 0.2 um.

[0058] The 2-1 interior forming solution with a composition ratio of Ni:Co:Mn of 85:6:9 was produced, and the 2-2 interior with a composition ratio of Ni:Co:Mn of 65:10:25 was produced forming a solution, and mixing the aqueous metal salt solution for forming the central portion and the 2-1 internal forming solution such that the mixing ratio is gradually changed from 100v%:0v% to 0v%:100v%, whereby the first mixed At the same time as the metal aqueous solution, the chelating agent and the alkaline aqueous solution are mixed and supplied to the reactor, and firstly the 2-1 interior is produced on the 1...

Embodiment 3

[0068] The first internal formation solution with a composition ratio of Ni:Co:Mn of 95:2:3 was prepared, and the initial stage NaOH was added at a ratio of 2.5L / 7g of distilled water, and the pH was adjusted to 11.7, and produced by coprecipitation reaction Precursor particles with a radius of 0.2um.

[0069] The second internal forming solution having a composition ratio of Ni:Co:Mn of 95:2:3 is produced, and the first mixing solution that is a mixed solution of the metal salt solution for forming the center portion and the second internal forming solution is produced. In the case of the aqueous metal solution, the chelating agent and the alkaline The aqueous solution was mixed and supplied to the reactor to manufacture transition metal composite oxide particles in which nickel, manganese, and chromium showed concentration gradients throughout the particles.

[0070] The particle size at 30 minutes after the start of the co-precipitation reaction and the particle size distr...

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 present invention relates to a method for preparing a lithium composite oxide and a lithium composite oxide prepared thereby and, more specifically, to: a method for preparing a lithium composite oxide, capable of preparing a lithium-ion secondary battery with high capacity by adjusting the amount of a basic solution added according to the nickel content during the preparation of a lithium composite oxide through a co-precipitational reaction, thereby adjusting the pH of the reactor, and thus improving the particle density and increasing the tap density; and a lithium composite oxide prepared thereby.

Description

technical field [0001] The present invention relates to a method for manufacturing a transfer metal composite oxide, a transfer metal composite oxide manufactured based on the transfer metal composite oxide, and a lithium composite oxide manufactured using the transfer metal composite oxide. Transition metal composite oxides and lithium composite oxides produced therefrom, when the transition metal composite oxides are produced by co-precipitation reactions, adjust the pH in the positive electrode reaction solution of the alkaline solution, thereby improving the subsequent formation of co-precipitation reactions. The density of the particles, and can manufacture high-capacity lithium-ion secondary batteries with high tap density. Background technique [0002] Lithium-ion secondary batteries are small, lightweight, and high-capacity batteries. Since their introduction in 1991, they have been widely used as power sources for portable devices. [0003] Recently, with the rapid...

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
IPC IPC(8): H01M4/525H01M4/505C01G53/00C01G45/00C01G15/00
CPCC01G1/02C01G53/006C01G53/50C01P2004/03C01P2004/53C01P2004/61C01P2004/62C01P2006/11H01M4/505H01M4/525H01M10/0525Y02E60/10H01M4/48H01M4/485H01M4/50H01M4/52H01M10/052
Inventor 宣良国尹诚晙
Owner IUCF HYU (IND UNIV COOP FOUNDATION HANYANG UNIV)
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com