Carbon nanosheets

US9478365B2 · kind B2 · utility

Assignee

• The Governors of the University of Alberta · CA

Inventors

• David Mitlin · Hannawa Falls, US
• Huanlei Wang · Edmonton, CA
• Zhanwei Xu · Longbeilingcun, CN
• Zhi Li · Suzhou, CN
• Chris Holt · Edmonton, CA

Key dates

• Filing date: May 5, 2014
• Grant date: Oct 25, 2016
• Expiry date: Nov 4, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/948
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

There is disclosed a combined hydrothermal and activation process that uses hemp bast fiber as the precursor to achieve graphene-like carbon nanosheets, a carbon nanosheet comprising carbonized crystalline cellulose, a carbon nanosheet formed by carbonizing crystalline cellulose, a capacitative structure comprises interconnected carbon nanosheets of carbonized crystalline cellulose, a method of forming a nanosheet comprising carbonizing crystalline cellulose to create carbonized crystalline cellulose. The interconnected two-dimensional carbon nanosheets also contain very high levels of mesoporosity.