Patent · US Expired

Method for producing electrode sheets for electrochemical elements

US7157184B2 · kind B2 · utility

2Cited by

10References

11Claims

0Family size

Assignee

Microbatterie GmbH · DE

Inventors

Thomas Wöhrle · Kornwestheim, DE
Peter Birke · Hohen Neuendorf, DE
Heinrich Stelzig · Ellwangen (Jagst), DE
Konrad Holl · Aalen, DE
Dejan llic · Ellwangen, DE

Key dates

Filing date	May 22, 2002
Grant date	Jan 2, 2007
Priority date	—
Expiry date	May 22, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49115
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for producing electrode sheets for electrochemical elements which contain at least one lithium-intercalating electrode which is composed of a mixture of at least two copolymerized fluorized polymers in whose polymer matrix electrochemically active materials which are insoluble in the polymer are finely dispersed, the fluorized polymers are, having being dissolved as a solvent, mixed with electrochemically active materials, the resulting pasty substance is extruded to form a sheet and then laminated with a polyolefin separator, which is provided with a mixture of the two polymers, PVDF-HFP copolymers in each case being used as the polymer, and the proportion of HFP being less than about 8 percent by weight.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.