Journal article
High capacitance of surface-modified 2D titanium carbide in acidic electrolyte
Electrochemistry communications, v 48, pp 118-122
Nov 2014
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The electrochemical behavior of Ti3C2, a two-dimensional titanium carbide from the MXene family, in H2SO4 electrolyte is reported. To demonstrate the effect of surface chemistry on capacitive performance, Ti3C2 was modified by delamination or intercalation treatments. Electrochemical testing revealed an increase in capacitance, which was attributed to oxygen-containing functional groups. An extraordinary high intercalation capacitance of 415F·cm−3 at 5A·g−1 was obtained from electrodes with a specific surface area of just 98m2·g−1. Values up to 520F·cm−3 were recorded for delaminated MXene films at 2mV·s−1. This study highlights that the behavior of materials from the large family of two-dimensional MXene can be tuned by suitable modification of their surface chemistry.
•Surface chemistry of two-dimensional Ti3C2 has been modified.•XPS analysis confirms replacement of terminal F-groups by oxygenated groups.•We demonstrate the contribution of pseudocapacitance mechanism.•We report excellent volumetric capacitance of 520F·cm−3.
Metrics
Details
- Title
- High capacitance of surface-modified 2D titanium carbide in acidic electrolyte
- Creators
- Yohan Dall'Agnese - Université Paul Sabatier, CIRIMAT UMR CNRS 5085, 118 route de Narbonne, 31062 Toulouse, FranceMaria R Lukatskaya - Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USAKevin M Cook - Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USAPierre-Louis Taberna - Université Paul Sabatier, CIRIMAT UMR CNRS 5085, 118 route de Narbonne, 31062 Toulouse, FranceYury Gogotsi - Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USAPatrice Simon - Université Paul Sabatier, CIRIMAT UMR CNRS 5085, 118 route de Narbonne, 31062 Toulouse, France
- Publication Details
- Electrochemistry communications, v 48, pp 118-122
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000345208000030
- Scopus ID
- 2-s2.0-84907469994
- Other Identifier
- 991014969773904721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Electrochemistry