Journal article
Recent advances in understanding the capacitive storage in microporous carbons
Fuel cells (Weinheim an der Bergstrasse, Germany), v 10(5), pp 819-824
29 Mar 2010
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Specific capacitance as high as 14µF/cm²-160F/g was obtained using well tailored subnanometer pore size activated carbons (6µF/cm²-100F/g for conventional activated carbons). Such high capacitance was obtained in several type of organic electrolyte with or without solvent. It came out a maximum is obtained for those carbons which mean pore size was close to the bare ion size ruling out the traditional point of view that mesoporous carbon are highly required to get the best. Surprisingly subnanometer activated carbons exhibit high capacitance retention since only 10% loss is measured when 6A/g discharge is drawn. These findings show the importance to fit ion size with mean activated pore size. Double layer theory falls short to explain such charge storage mechanisms at nanometer scale thus computational modeling is now currently under progress to find out an other charge storage model.
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Details
- Title
- Recent advances in understanding the capacitive storage in microporous carbons
- Creators
- Barbara DAFFOS - Centre interuniversitaire de recherche et d'ingenierie des matériauxPierre-Louis TABERNA - Centre interuniversitaire de recherche et d'ingenierie des matériauxYury GOGOTSI - Department of Materials Science and Engineering and A.J. Drexel Nanotechnology InstitutePatrice SIMON - Centre interuniversitaire de recherche et d'ingenierie des matériaux
- Publication Details
- Fuel cells (Weinheim an der Bergstrasse, Germany), v 10(5), pp 819-824
- Publisher
- Wiley-VCH Verlag
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000284057800011
- Scopus ID
- 2-s2.0-79959612326
- Other Identifier
- 991014969769904721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Electrochemistry
- Energy & Fuels