Journal article
Two-Dimensional Vanadium Carbide (MXene) as Positive Electrode for Sodium-Ion Capacitors
The journal of physical chemistry letters, v 6(n° 12), pp 2305-2309
18 Jun 2015
PMID: 26266609
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Ion capacitors store energy through intercalation of cations into an electrode at a faster rate than in batteries and within a larger potential window. These devices reach a higher energy density compared to electrochemical double layer capacitor. Li-ion capacitors are already produced commercially, but the development of Na-ion capacitors is hindered by lack of materials that would allow fast intercalation of Na-ions. Here we investigated the electrochemical behavior of 2D vanadium carbide, V2C, from the MXene family. We investigated the mechanism of Na intercalation by XRD and achieved capacitance of ∼100 F/g at 0.2 mV/s. We assembled a full cell with hard carbon as negative electrode, a known anode material for Na ion batteries, and achieved capacity of 50 mAh/g with a maximum cell voltage of 3.5 V.
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Details
- Title
- Two-Dimensional Vanadium Carbide (MXene) as Positive Electrode for Sodium-Ion Capacitors
- Creators
- Yohan Dall’Agnese - Centre interuniversitaire de recherche et d'ingenierie des matériauxPierre-Louis Taberna - Centre interuniversitaire de recherche et d'ingenierie des matériauxYury Gogotsi - Drexel UniversityPatrice Simon - Centre interuniversitaire de recherche et d'ingenierie des matériaux
- Publication Details
- The journal of physical chemistry letters, v 6(n° 12), pp 2305-2309
- Publisher
- American Chemical Society; Washington, DC
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000356758100026
- Scopus ID
- 2-s2.0-84934982691
- Other Identifier
- 991014878364804721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Atomic, Molecular & Chemical