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Journal article
Transparent, Flexible, and Conductive 2D Titanium Carbide (MXene) Films with High Volumetric Capacitance
Advanced materials (Weinheim), v 29(36), pp 1702678-n/a
27 Sep 2017
PMID: 28741695
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
2D transition‐metal carbides and nitrides, known as MXenes, have displayed promising properties in numerous applications, such as energy storage, electromagnetic interference shielding, and catalysis. Titanium carbide MXene (Ti3C2Tx), in particular, has shown significant energy‐storage capability. However, previously, only micrometer‐thick, nontransparent films were studied. Here, highly transparent and conductive Ti3C2Tx films and their application as transparent, solid‐state supercapacitors are reported. Transparent films are fabricated via spin‐casting of Ti3C2Tx nanosheet colloidal solutions, followed by vacuum annealing at 200 °C. Films with transmittance of 93% (≈4 nm) and 29% (≈88 nm) demonstrate DC conductivity of ≈5736 and ≈9880 S cm−1, respectively. Such highly transparent, conductive Ti3C2Tx films display impressive volumetric capacitance (676 F cm−3) combined with fast response. Transparent solid‐state, asymmetric supercapacitors (72% transmittance) based on Ti3C2Tx and single‐walled carbon nanotube (SWCNT) films are also fabricated. These electrodes exhibit high capacitance (1.6 mF cm−2) and energy density (0.05 µW h cm−2), and long lifetime (no capacitance decay over 20 000 cycles), exceeding that of graphene or SWCNT‐based transparent supercapacitor devices. Collectively, the Ti3C2Tx films are among the state‐of‐the‐art for future transparent, conductive, capacitive electrodes, and translate into technologically viable devices for next‐generation wearable, portable electronics.
Highly transparent and conductive Ti3C2Tx films and their application as transparent, solid‐state supercapacitors are demonstrated. Films with transmittance of 93% (≈4 nm) and 29% (≈88 nm) demonstrate DC conductivity of ≈5736 and ≈9880 S cm−1, respectively. The Ti3C2Tx films display impressive volumetric capacitance (676 F cm−3), high areal capacitance, and long lifetime in the transparent solid‐state supercapacitor devices.
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Details
- Title
- Transparent, Flexible, and Conductive 2D Titanium Carbide (MXene) Films with High Volumetric Capacitance
- Creators
- Chuanfang (John) Zhang - Trinity College DublinBabak Anasori - Drexel UniversityAndrés Seral‐Ascaso - Trinity College DublinSang‐Hoon Park - Trinity College DublinNiall McEvoy - Trinity College DublinAleksey Shmeliov - Trinity College DublinGeorg S Duesberg - Universität der BundeswehrJonathan N Coleman - Trinity College DublinYury Gogotsi - Drexel UniversityValeria Nicolosi - Trinity College Dublin
- Publication Details
- Advanced materials (Weinheim), v 29(36), pp 1702678-n/a
- Publisher
- Wiley
- Number of pages
- 9
- Grant note
- European Research Council (2D NANOCAP) SFI (12/RC/2278; PI_15/IA/3131; 15/SIRG/3329)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000411379000027
- Scopus ID
- 2-s2.0-85026290807
- Other Identifier
- 991014877771604721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter