Patent · US Active

Porous carbon particles having a core/shell structure, and method for producing same

US10468712B2 · kind B2 · utility

1Cited by

1References

8Claims

0Family size

Assignee

HERAEUS QUARZGLAS GMBH & CO. KG · DE

Inventors

Matthias Otter · Hamm, DE
Jörg Becker · Florstadt, DE
Sascha Pihan · Aschaffenburg, DE
Christian Neumann · Hungen, DE

Key dates

Filing date	Jan 26, 2015
Grant date	Nov 5, 2019
Priority date	—
Expiry date	Aug 4, 2035

Classification

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

Abstract

A method for producing carbon particles having a core/shell structure includes infiltrating a pore-containing template material with a first precursor for carbon of a first variety, carbonizing the first precursor to form a deposit of the carbon of the first variety, infiltrating the remaining pore space with a second precursor for carbon of a second variety to form a second deposit of the carbon of the second variety which has a second porosity lower than the first porosity, and removing the template material to form the carbon particles. The template material is provided as template particles and the first precursor is provided as precursor particles of meltable and polymerizable material. The infiltration occurs in the molten phase so that the first precursor is foamed before or during the carbonization to form a pore-containing carbon foam. In an intermediate product, pores of the template material are at least partially filled.

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