Journal article
2D Titanium Carbide/Reduced Graphene Oxide Heterostructures for Supercapacitor Applications
Batteries & supercaps, v 1(1), pp 33-38
Jul 2018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Solution‐processable two‐dimensional (2D) materials offer the possibility of manufacturing heterostructures with various properties, creating a way to tune materials towards a specific application. Two different 2D materials, titanium carbide MXene (Ti3C2Tx) and reduced graphene oxide (rGO), have shown promising results for supercapacitor applications due to their flake‐like morphology, high conductivity; and ability to intercalate molecules or ions for charge storage. Here, we demonstrate the self‐assembly of a heterostructure between negatively charged Ti3C2Tx and positively charged modified rGO after shear mixing. Changes in zeta (ζ) potential, X‐ray diffraction (XRD) patterns; and Raman spectra confirm the assembly of this heterostructure. The produced rGO : Ti3C2Tx heterostructures were used as electrodes for supercapacitors. The addition of rGO to Ti3C2Tx allowed some widening of the voltage window. Moreover, due to the synergistic effect of these materials, an increase of the capacitance value was observed. An electrode film composed of rGO (1 wt.%) and Ti3C2Tx (99 wt.%) achieved capacitance values up to 254 F ⋅ g−1 at 2 mV ⋅ s−1 and 193 F ⋅ g−1 at 100 mV ⋅ s−1.
Layer cake: A heterostructure between negatively charged Ti3C2Tx and positively charged modified rGO is synthesized through self‐assembly. The rGO : Ti3C2Tx heterostructure exhibits a wider voltage window and higher capacitance than Ti3C2Tx, suggesting promising applications in energy storage devices.
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Details
- Title
- 2D Titanium Carbide/Reduced Graphene Oxide Heterostructures for Supercapacitor Applications
- Creators
- Adriana M Navarro‐Suárez - Chalmers University of TechnologyKathleen Maleski - Drexel UniversityTaron Makaryan - Drexel UniversityJun Yan - Harbin Engineering UniversityBabak Anasori - Drexel UniversityYury Gogotsi - Drexel University
- Publication Details
- Batteries & supercaps, v 1(1), pp 33-38
- Publisher
- Wiley
- Number of pages
- 6
- Grant note
- Basque Government Scholarship for pre-doctoral formation (PRE_2015_2_0096) Egonlabur Traveling Grant (EP_2016_1_0030) CIC energiGUNE
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000493564600005
- Scopus ID
- 2-s2.0-85056589677
- Other Identifier
- 991014970038304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Electrochemistry
- Materials Science, Multidisciplinary