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

A kind of cobalt-free nickel-free cathode material, its preparation method and battery

A nickel positive electrode and battery technology, which is applied to cobalt-free and nickel-free positive electrode materials, its preparation method and the field of batteries, can solve problems such as environmental hazards and battery cost constraints, and achieve the effects of promoting production, improving cycle performance, and simple preparation process

Active Publication Date: 2021-08-24
SVOLT ENERGY TECHNOLOGY CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of the new energy market, due to the advantages of high energy density, high cycle and high safety, ternary cathode materials have attracted much attention. In the current power market, such as large-scale commercialization of NCM523 and NCM622 Ternary materials such as ternary materials can meet the needs of power vehicles to a certain extent, but their mileage and safety performance still need to be improved. In addition, the price of cobalt and nickel in NCM continues to rise, which restricts the cost of batteries, and cobalt metal is easy to use. environmental hazard

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
  • A kind of cobalt-free nickel-free cathode material, its preparation method and battery
  • A kind of cobalt-free nickel-free cathode material, its preparation method and battery
  • A kind of cobalt-free nickel-free cathode material, its preparation method and battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] This embodiment provides a method for preparing a cobalt-free and nickel-free positive electrode material. The preparation method specifically includes the following steps:

[0052] (I) Mix lithium carbonate, sodium carbonate and manganese carbonate, the molar ratio of lithium element, sodium element and manganese element is 0.25:1:0.75, and heat at 750°C for 10 hours in an air atmosphere to prepare the cobalt-free and nickel-free Matrix material, the general formula is NaLi 0.25 mn 0.75 o 2 , the air flow rate is 7.5L / min;

[0053] (II) Mix the cobalt-free and nickel-free base material prepared in step (I), lithium carbonate and MnO to obtain a mixture. The molar ratio of lithium element to manganese element in the mixture is 1.2:1, and conduct a melting reaction at 600°C for 6h, Add water to the reacted material, stir and wash for 10 minutes, the quality of the added water is twice the mass of the material, and dry after washing;

[0054] (Ⅲ) After drying, the cob...

Embodiment 2

[0057] This embodiment provides a method for preparing a cobalt-free and nickel-free positive electrode material. The preparation method specifically includes the following steps:

[0058] (I) Mix lithium hydroxide, sodium acetate and manganese monoxide, the molar ratio of lithium, sodium and manganese is 0.25:1:0.75, and heat at 500°C for 12 hours in an air atmosphere to prepare the cobalt-free Nickel-free matrix material, the general formula is NaLi 0.25 mn 0.75 o 2, the air flow rate is 5L / min;

[0059] (II) The cobalt-free and nickel-free base material prepared in step (I), lithium hydroxide and Mn 3 o 4 Mix to obtain a mixture, the molar ratio of lithium element to manganese element in the mixture is 0.9:1, conduct a melting reaction at 400°C for 8 hours, add water to the reacted material and stir and wash for 10 minutes, the quality of the added water is twice the mass of the material , dry after washing;

[0060] (Ⅲ) After drying, the cobalt-free and nickel-free c...

Embodiment 3

[0063] This embodiment provides a method for preparing a cobalt-free and nickel-free positive electrode material. The preparation method specifically includes the following steps:

[0064] (I) Mix lithium chloride, sodium chloride and manganese trioxide, the molar ratio of lithium element, sodium element and manganese element is 0.25:1:0.75, and heat at 800°C for 8 hours in an air atmosphere to prepare the described Cobalt-free and nickel-free matrix material, the general formula is NaLi 0.25 mn 0.75 o 2 , the air flow rate is 10L / min;

[0065] (II) The cobalt-free and nickel-free base material prepared in step (I), lithium chloride and MnCO 3 Mix to obtain a mixture, the molar ratio of lithium element to manganese element in the mixture is 1.5:1, conduct a melting reaction at 800°C for 4 hours, add water to the reacted material and stir and wash it for 10 minutes, the mass of water added is twice the mass of the material , dry after washing;

[0066] (Ⅲ) After drying, th...

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
diameteraaaaaaaaaa
heightaaaaaaaaaa
Login to View More

Abstract

The invention provides a cobalt-free and nickel-free positive electrode material, a preparation method thereof and a battery. The preparation method comprises: preparing a cobalt-free nickel-free base material, mixing the cobalt-free nickel-free base material, a lithium source and a divalent manganese compound After the reaction, the cobalt-free and nickel-free cathode material is prepared. The present invention effectively inhibits layered LiMnO by adding a divalent manganese compound in the preparation process 2 Generation and spinel LiMn 2 o 4 Generates, promotes layered Li 2 MnO 3 In the process of circulation, the cycle performance is improved, and the invention has the characteristics of simple preparation process, low cost, little pollution and high cycle performance.

Description

technical field [0001] The invention belongs to the technical field of batteries, and relates to a cobalt-free and nickel-free cathode material, in particular to a cobalt-free and nickel-free cathode material, a preparation method thereof and a battery. Background technique [0002] With the development of the new energy market, due to the advantages of high energy density, high cycle and high safety, ternary cathode materials have attracted much attention. In the current power market, such as large-scale commercialization of NCM523 and NCM622 Ternary materials such as ternary materials can meet the needs of power vehicles to a certain extent, but their mileage and safety performance still need to be improved. In addition, the price of cobalt and nickel in NCM continues to rise, which restricts the cost of batteries, and cobalt metal is easy to use. The environment poses a hazard. Contents of the invention [0003] In view of the deficiencies in the prior art, the purpose...

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 Patents(China)
IPC IPC(8): H01M4/36H01M4/485H01M4/505H01M4/58H01M4/62H01M10/052H01M10/0525C01B25/36C01G23/00C01G45/12
CPCH01M4/364H01M4/366H01M4/505H01M4/485H01M4/5825H01M4/628H01M10/052H01M10/0525C01G45/1257C01G45/1214C01B25/36C01G23/005H01M2220/20H01M2004/028C01P2004/80C01P2006/40Y02E60/10
Inventor 王鹏飞杨红新李子郯乔齐齐施泽涛郭丰许鑫培
Owner SVOLT ENERGY TECHNOLOGY 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