Mesoporous Carbon/MXene Heterostructures for Supercapacitors

  • Author: ChemSusChem
  • Published Date: 10 September 2021
  • Copyright: Wiley-VCH GmbH
thumbnail image: Mesoporous Carbon/MXene Heterostructures for Supercapacitors

Related Societies

Two-dimensional transition-metal carbonitrides (MXenes), such as Ti3C2Tx, could be useful electrode materials, especially for supercapacitors. However, a tendency to aggregate and the easy oxidation of MXene nanosheets limit their electrochemical performance.


Zhen-An Qiao, Jilin University, China, and colleagues have developed a self-assembly strategy to synthesize ordered mesoporous carbon/Ti3C2Tx heterostructures (OMCTs, pictured below). In this method, the surfactant Pluronic F127 is used together with low-molecular-weight phenolic resol to form stable micelles (pictured in blue and red). The hydroxy groups of the micelles can interact with the surface functional groups of Ti3C2Tx by hydrogen bonding and prevent the aggregation of Ti3C2Tx nanosheets, as well as their oxidation. A subsequent carbonization creates ordered mesoporous carbon layers (pictured in black) around the MXene nanosheets (pictured in yellow) and gives the desired OMCT heterostructures.

 


The resulting OMCTs have ordered mesoporous structures with high surface areas and large pore volumes. OMCTs serving as electrode materials for supercapacitors showed good performance, with a high capacitance of 247 F g–1 at 0.2 A g–1, a satisfactory rate performance of 190 F g–1 at 5 A g–1, and excellent cyclability.


 

 

Article Views: 952

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission and consult our permission guidance prior to making your request

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH