Patent · US Expired

Method for producing a secondary lithium cell comprising a heat-sensitive protective mechanism

US6511517B1 · kind B1 · utility

21Cited by

7References

20Claims

0Family size

Assignee

NBT Co., Ltd. · DE

Inventors

Matthias Ullrich · Albeck, DE
Dieter Bechtold · Bad Vilbel, DE
Heinrich Rabenstein
Thomas Brohm · Eppertshausen, DE

Key dates

Filing date	Apr 17, 2000
Grant date	Jan 28, 2003
Priority date	—
Expiry date	Apr 17, 2020

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 a secondary lithium cell which has at least one lithium-cycling negative electrode, at least one lithium-intercalating positive electrode, at least one separator disposed between the positive and the negative electrode, and a nonaqueous lithium ion-conducting electrolyte. The method is carried out by the electrodes and/or the separator being coated, by means of electrostatic powder coating, with wax particles which are insoluble in the electrolyte and have a melting temperature of from about 50 to about 150 ° C. and a mean particle size of from about 6 to about 20 &mgr;m, the amount of wax being between about 0.5 and about 2.5 mg/cm2 of electrode area.

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