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

Composition for secondary battery electrodes

A composition and electrode technology, applied in battery electrodes, secondary batteries, secondary battery manufacturing, etc., can solve the problems of electrode degradation capacity, rapid attenuation, etc.

Pending Publication Date: 2022-02-25
SOLVAY SOLEXIS
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can also lead to the formation of an unstable solid electrolyte interfacial phase (SEI), leading to electrode degradation and rapid capacity fading (especially at high current densities)

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
  • Composition for secondary battery electrodes
  • Composition for secondary battery electrodes
  • Composition for secondary battery electrodes

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0207] Preparation of 5wt% Aqueous Solution of PAI Polymer

[0208]

[0209] ODA monomer (60.0 g, 0.3 mol) was charged into a 4 neck jacketed round bottom flask equipped with an overhead mechanical stirrer. NMP (250 mL) was charged to the flask and the mixture was cooled to 10 °C under nitrogen atmosphere with gentle stirring. Equipped with a heated addition funnel, the flask was charged with TMAC (64.0 g, 0.3 moles) and heated to a minimum of 100°C. With vigorous stirring, molten TMAC was added to the solution of the diamine in NMP at a rate sufficient not to exceed 40°C. . Once the addition was complete, external heat was applied to maintain 35°C-40°C for 2 hours. Additional NMP (50 mL) was added and the reaction mixture was drained into a 500 mL beaker. The polymer solution was slowly added to water (4000 mL) in a stainless steel high shear mixer. The precipitated polymer (PAI resin) was filtered and washed multiple times with water to remove residual solvent and ...

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
glass transition temperatureaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
number average molecular weightaaaaaaaaaa
Login to View More

Abstract

The present invention pertains to an electrode-forming composition comprising one or more aromatic polyamide-imide polymers (PAI), one or more electro-active compounds, one or more solvents and one or more co-binder materials being selected among polymers having a Tg below 30 DEG C and having an enthalpy of fusion from 0 to 90 J / g. The present invention also relates to the use of said electrode-forming composition in a process for the manufacture of an electrode, to said electrode and to an electrochemical device such as a secondary battery comprising said electrode.

Description

technical field [0001] This application claims priority from European Application No. 19183739.2 filed on 01.07.2019, the entire content of which application is incorporated by reference into this application for all purposes. [0002] The present invention relates to an electrode-forming composition, use of the electrode-forming composition in a method for manufacturing an electrode, the electrode, and an electrochemical device such as a secondary battery including the electrode. Background technique [0003] Electrochemical devices such as secondary batteries typically include a positive electrode, a negative electrode, a separator, and an electrolyte. [0004] Electrodes for secondary batteries are generally produced by applying an electrode-forming composition to a metal substrate, also called a "current collector". Compositions for forming electrodes are typically formed by mixing a binder with a powdered electroactive compound and optionally other ingredients such as ...

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): H01M4/04H01M4/60H01M4/62H01M10/04
CPCH01M4/606H01M4/622H01M4/04H01M10/04H01M4/0404H01M4/623H01M4/131H01M4/133H01M4/134H01M10/0525Y02E60/10C08G73/14H01M2004/027H01M2004/028
Inventor M·比索P·科约卡鲁
Owner SOLVAY SOLEXIS