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

Electrode material and secondary battery

A technology for electrode materials and secondary batteries, which is applied in the manufacture of secondary batteries, non-aqueous electrolyte batteries, and electrolyte batteries. It can solve problems affecting battery cycle performance and rate performance, and achieve both cycle stability and wettability. Effects of improved cycle life and rate performance

Inactive Publication Date: 2019-05-03
CONTEMPORARY AMPEREX TECH CO
View PDF7 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphite with a high degree of graphitization usually affects the cycle performance and rate performance of the battery

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
  • Electrode material and secondary battery
  • Electrode material and secondary battery
  • Electrode material and secondary battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] First, prepare the electrode material according to the specific process parameters (precursor particle size, graphitization temperature, etc.) listed in Table 1 according to "1. Preparation process of graphitized carbon electrode material", and then according to "2. Performance test" The graphitization degree, compacted density (30000N), gram capacity, rate performance and cycle performance of the obtained electrode materials were tested respectively, and the measured data are listed in Table 2.

Embodiment 2-6

[0078] The different process parameters listed in Table 1 were used to repeat Example 1 to prepare corresponding electrode materials, and the degree of graphitization, compaction density (30000N), gram capacity, and rate performance of the obtained electrode materials were tested respectively according to "two, performance test". And cycle performance, the measured data are listed in Table 2.

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
densityaaaaaaaaaa
densityaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses an electrode material and a secondary battery, wherein the electrode material is a graphitized carbon material with graphitization degree being 93-97%; the compaction density of the material is 1.40-1.85 g / cm<3> under the action force of 30000 N. A lithium ion secondary battery with the electrode material has both high capacity and excellent cycling stability.

Description

technical field [0001] The invention belongs to the field of battery technology, and more specifically, the invention relates to an electrode material and a secondary battery using the material. Background technique [0002] With the increasing popularity of electric vehicles, the requirements for batteries are becoming more and more stringent. Electric vehicles have higher and higher requirements for cruising range, which leads to a corresponding increase in the demand for energy density of batteries. Therefore, it is necessary to provide electrode materials with higher specific capacity for power battery cells. For graphite, which has the best overall performance and is the most widely used anode material for lithium-ion batteries, improving its lattice order (graphitization degree) can effectively increase its specific capacity. However, graphite with a high degree of graphitization usually affects the cycle performance and rate performance of batteries. [0003] There...

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): C01B32/205H01M4/587H01M10/0525H01M10/058
CPCY02E60/10Y02P70/50
Inventor 沈睿马建军何立兵
Owner CONTEMPORARY AMPEREX TECH CO
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