Patent · US Active

Method for manufacturing a polyacrylonitrile-sulfur composite material

US10096834B2 · kind B2 · utility

1Cited by

0References

21Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Martin Tenzer · Leverkusen, DE
Malte Rolff · Stockelsdorf, DE
Jean Fanous · Pfullingen, DE

Key dates

Filing date	May 3, 2013
Grant date	Oct 9, 2018
Priority date	—
Expiry date	Mar 16, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method is provided for manufacturing a polyacrylonitrile-sulfur composite material, the polyacrylonitrile-sulfur composite material having an sp2 hybrid proportion, with respect to the total carbon atoms included in the composite material, of greater than or equal to 85% including the method steps: a) reaction of polyacrylonitrile with sulfur at a temperature of greater than or equal to 450° C., in particular greater than or equal to 550° C.; b) immediate purification of the product obtained in method step a); and c) drying the purified product, if necessary. A composite material manufactured in this way may be used in particular in an active material of a cathode of a lithium-ion battery and offers a particularly high rate capacity. In addition, methods are provided for manufacturing an active material for an electrode, a polyacrylonitrile-sulfur composite material and an energy store.

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