Composite material, preparation method of composite material, and lithium ion battery comprising composite material
A composite material, lithium source technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of organic consumption, increased cost, and insufficient connection, achieving obvious cost-effective advantages, improved pressure resistance, and good consistency Effects of Sex and Uniformity
Active Publication Date: 2014-10-01
NEC (CHINA) CO LTD
4 Cites 9 Cited by
AI-Extracted Technical Summary
Problems solved by technology
View more
Method used
View more
Abstract
The invention discloses a composite material, a preparation method of the composite material, and a lithium ion battery comprising the composite material, and belongs to the field of lithium ion battery materials. The composite material is in a core-shell structure. A shell layer of the composite material comprises a middle layer and an outer layer coated outside the middle layer. An inner core of the composite material is Li(NixCoyAlz)O2; the middle layer is Li(Ni1/3Co1/3Mn1/3)O2; the outer layer is LiNi0.5Mn1.5O4; and a molar ratio of the inner core to the middle layer to the outer layer of the composite material is a:b:c, wherein a+b+c=1, b is greater than 0 and less than 0.5, c is greater than 0 and less than 0.5, x+y+z=1, y=0.15, and z is greater than or equal to 0.03 and is less than or equal to 0.05. The composite material has the characteristics of comparatively high capacity, low alkalinity and electrolyte resistance, has good cycling stability and safety performance, has an obvious cost performance advantage, and is more suitable for application of a power battery. Structural precursors of the layers of the composite material are sequentially formed by utilizing a coprecipitation synthesis technology, so that good consistency and good homogeneity are achieved and the layers are tightly connected with each other. Besides, the composite material can be obtained by a single roasting process; and the cost can be lowered effectively.
Application Domain
Cell electrodesSecondary cells
Technology Topic
CoprecipitationCyclic stability +9
Image
Examples
- Experimental program(17)
- Comparison scheme(3)
Example Embodiment
Example Embodiment
Example Embodiment
PUM


Description & Claims & Application Information
We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
Similar technology patents
High-temperature and high-pressure clamp holder and using method thereof
Owner:QINGDAO SHIDA HUASONG SCI & TECH
Electrostatic protection chip based on power management and preparation method thereof
Owner:深圳市鑫飞宏电子有限公司
Small high-pressure storage tank
Owner:SHANGHAI AUTOMATION INSTRAION CO LTD +1
Anti-interference and high-voltage-resistant magnetic core material and preparation method thereof
Owner:江西瑞吉磁电子科技有限公司
Classification and recommendation of technical efficacy words
- Improve safety performance and stability performance
- Improve pressure resistance
Protective device for agricultural buried line
InactiveCN109936122AImprove safety performance and stability performanceRealize remote sending and receiving
Owner:南晓鹏