Relation between the Ion Size and Pore Size for an Electric Double-Layer Capacitor
Centre National de la Recherche Scientifique · Drexel University · +2 more institutions
Abstract
The research on electrochemical double layer capacitors (EDLC), also known as supercapacitors or ultracapacitors, is quickly expanding because their power delivery performance fills the gap between dielectric capacitors and traditional batteries. However, many fundamental questions, such as the relations between the pore size of carbon electrodes, ion size of the electrolyte, and the capacitance have not yet been fully answered. We show that the pore size leading to the maximum double-layer capacitance of a TiC-derived carbon electrode in a solvent-free ethyl-methylimmidazolium-bis(trifluoro-methane-sulfonyl)imide (EMI-TFSI) ionic liquid is roughly equal to the ion size (approximately 0.7 nm). The capacitance…
Citation impact
- FWCI
- 22.28
- Percentile
- 100%
- References
- 12
Authors
6- CLCéline LargeotCorresponding
Centre National de la Recherche Scientifique, Drexel University, Université Toulouse III - Paul Sabatier, Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux
- CPCristelle Portet
Centre National de la Recherche Scientifique, Drexel University, Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux, Université Toulouse III - Paul Sabatier
- JCJohn Chmiola
Université Toulouse III - Paul Sabatier, Drexel University, Centre National de la Recherche Scientifique, Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux
- PTPierre‐Louis Taberna
Université Toulouse III - Paul Sabatier, Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux, Centre National de la Recherche Scientifique, Drexel University
- YGYury Gogotsi
Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux, Université Toulouse III - Paul Sabatier, Drexel University, Centre National de la Recherche Scientifique
Topics & keywords
- Supercapacitor
- Capacitance
- Chemistry
- Electrolyte
- Ionic liquid
- Capacitor
- Ion
- Electrochemistry
- Affordable and clean energy