Process for preparing a porous carbon material and a porous carbon material obtainable by this process

US12297110B2 · kind B2 · utility

Assignee

• HERAEUS BATTERY TECHNOLOGY GMBH · DE

Inventors

• Julie Michaud-Bernlochner · Bonn, DE
• Andreas Kuhn · Goldbach, DE
• Evgeniia Komarova · Hanau, DE
• Benjamin Krüner · Hanau, DE
• Jörg Becker · Florstadt, DE

Key dates

• Filing date: Mar 19, 2020
• Grant date: May 13, 2025
• Expiry date: Feb 27, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/6584
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Known processes for preparing a porous carbon material with a hierarchical porosity comprise the steps of a) providing at least one carbon source and at least one amphiphilic species, b) combining the carbon source and the amphiphilic species to obtain a precursor material, and c) heating the precursor material to obtain the porous carbon material having a modal pore size and a pore volume. In order to avoid a lengthy hydrothermal treatment and to allow tunability of the pore size, pore size distribution and pore volume in carbon material, it is proposed that the heating step c) comprises a low temperature treatment in which the precursor material is heated to a first temperature in the range between 300° C. and 600° C. to obtain a self-assembled porous carbonaceous material, and wherein heating to the first temperature comprises a first average heating rate in the range of 0.5° C./min to 5° C./min.