The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 2025
Filed:
May. 25, 2022
Tongji University, Shanghai, CN;
Ying Wang, Shanghai, CN;
Yilong Yan, Shanghai, CN;
TONGJI UNIVERSITY, Shanghai, CN;
Abstract
A method and a device for preparing graphene and hydrogen gas by converting waste plastics with Joule heat are provided according to the present application. The method uses the Joule heat generated when a strong current passes through the mixed plastic material mixed with conductive additive, as the reaction driving energy. By Joule heating, carbon-carbon bonds and carbon-hydrogen bonds are broken, amorphous carbon is converted into sphybridized high-purity graphene, and hydrogen atoms are converted into hydrogen gas. The reaction device used by the method is mainly composed of three parts: an airtight reaction chamber, a gas collecting system and a power control system.