Electrochemical device and electronic device

An electrochemical and discharge capacity technology, applied in the field of electrochemical energy storage, can solve problems such as unsatisfactory

Pending Publication Date: 2022-06-03
NINGDE AMPEREX TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in order to improve the low-temperature charge-discharge performance of electrochemical devices,

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
  • Electrochemical device and electronic device
  • Electrochemical device and electronic device
  • Electrochemical device and electronic device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0071] Example 1

[0072] Preparation of positive electrode: Lithium cobaltate, conductive carbon black (Super P), and polyvinylidene fluoride (PVDF) were mixed in a weight ratio of 97.5:1.0:1.5, and N-methylpyrrolidone (NMP) was added as a solvent, and stirred evenly . The slurry is uniformly coated on the positive electrode current collector aluminum foil with a coating thickness of 80 μm, and the positive electrode is obtained after drying, cold pressing and cutting.

[0073] Preparation of negative electrode: dissolving epoxy resin in ethanol and stirring for a period of time to obtain a mixed solution, then adding a curing agent (m-phenylenediamine) (epoxy resin: curing agent mass ratio = 10:1) and transferring the mixed solution to a hydrothermal reaction In the kettle, the hydrothermal reaction was carried out under the condition of 180°C, and the solid part was taken out after the temperature was cooled down. It was placed in a box furnace, heated to 200°C for 1 h at...

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
Adhesionaaaaaaaaaa
Compaction densityaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

Provided are an electrochemical device and an electronic device wherein the 0.2 C discharge capacity of the electrochemical device at-20 DEG C is A, the 0.2 C discharge capacity of the electrochemical device at 25 DEG C is B, and 70% < = A/B < = 90%. The electrochemical device provided by the embodiment of the invention has relatively good low-temperature charge-discharge performance at a low temperature of-20 DEG C.

Description

technical field [0001] The present application relates to the field of electrochemical energy storage, in particular to electrochemical devices and electronic devices. Background technique [0002] With the development and progress of electrochemical devices (eg, lithium-ion batteries), higher and higher requirements have been placed on their low-temperature charge-discharge performance. At present, in order to improve the low-temperature charge-discharge performance of electrochemical devices, although some measures have been taken to obtain some improvements, they are still unsatisfactory. [0003] Therefore, improving the low-temperature charge-discharge performance of electrochemical devices is still an urgent problem to be solved. SUMMARY OF THE INVENTION [0004] Some embodiments of the present application provide an electrochemical device, the 0.2C discharge capacity of the electrochemical device at -20°C is A, the 0.2C discharge capacity of the electrochemical dev...

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): H01M10/0525H01M4/13H01M4/64
CPCH01M10/0525H01M4/13H01M4/64Y02E60/10
Inventor 刘茜郑席杜鹏谢远森
Owner NINGDE AMPEREX TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap