Design of Porous Carbons for Supercapacitor Applications for Different Organic Solvent-Electrolytes
The challenge of optimizing the pore size distribution of porous electrodes for different electrolytes is encountered in supercapacitors, lithium-ion capacitors and hybridized battery-supercapacitor devices. A volume-averaged continuum model of ion transport, taking into account the pore size distri...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-01-01
|
| Series: | C |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2311-5629/7/1/15 |
| _version_ | 1827596993981054976 |
|---|---|
| author | Joshua Bates Foivos Markoulidis Constantina Lekakou Giuliano M. Laudone |
| author_facet | Joshua Bates Foivos Markoulidis Constantina Lekakou Giuliano M. Laudone |
| author_sort | Joshua Bates |
| collection | DOAJ |
| description | The challenge of optimizing the pore size distribution of porous electrodes for different electrolytes is encountered in supercapacitors, lithium-ion capacitors and hybridized battery-supercapacitor devices. A volume-averaged continuum model of ion transport, taking into account the pore size distribution, is employed for the design of porous electrodes for electrochemical double-layer capacitors (EDLCs) in this study. After validation against experimental data, computer simulations investigate two types of porous electrodes, an activated carbon coating and an activated carbon fabric, and three electrolytes: 1.5 M TEABF<sub>4</sub> in acetonitrile (AN), 1.5 M TEABF<sub>4</sub> in propylene carbonate (PC), and 1 M LiPF<sub>6</sub> in ethylene carbonate:ethyl methyl carbonate (EC:EMC) 1:1 v/v. The design exercise concluded that it is important that the porous electrode has a large specific area in terms of micropores larger than the largest desolvated ion, to achieve high specific capacity, and a good proportion of mesopores larger than the largest solvated ion to ensure fast ion transport and accessibility of the micropores. |
| first_indexed | 2024-03-09T03:20:54Z |
| format | Article |
| id | doaj.art-e248d12160dc4f93ae86374e145f92e1 |
| institution | Directory Open Access Journal |
| issn | 2311-5629 |
| language | English |
| last_indexed | 2024-03-09T03:20:54Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | C |
| spelling | doaj.art-e248d12160dc4f93ae86374e145f92e12023-12-03T15:12:21ZengMDPI AGC2311-56292021-01-01711510.3390/c7010015Design of Porous Carbons for Supercapacitor Applications for Different Organic Solvent-ElectrolytesJoshua Bates0Foivos Markoulidis1Constantina Lekakou2Giuliano M. Laudone3Centre for Engineering Materials, University of Surrey, Guildford GU2 7XH, UKCentre for Engineering Materials, University of Surrey, Guildford GU2 7XH, UKCentre for Engineering Materials, University of Surrey, Guildford GU2 7XH, UKFaculty of Science and Engineering, University of Plymouth, Plymouth PL4 8AA, UKThe challenge of optimizing the pore size distribution of porous electrodes for different electrolytes is encountered in supercapacitors, lithium-ion capacitors and hybridized battery-supercapacitor devices. A volume-averaged continuum model of ion transport, taking into account the pore size distribution, is employed for the design of porous electrodes for electrochemical double-layer capacitors (EDLCs) in this study. After validation against experimental data, computer simulations investigate two types of porous electrodes, an activated carbon coating and an activated carbon fabric, and three electrolytes: 1.5 M TEABF<sub>4</sub> in acetonitrile (AN), 1.5 M TEABF<sub>4</sub> in propylene carbonate (PC), and 1 M LiPF<sub>6</sub> in ethylene carbonate:ethyl methyl carbonate (EC:EMC) 1:1 v/v. The design exercise concluded that it is important that the porous electrode has a large specific area in terms of micropores larger than the largest desolvated ion, to achieve high specific capacity, and a good proportion of mesopores larger than the largest solvated ion to ensure fast ion transport and accessibility of the micropores.https://www.mdpi.com/2311-5629/7/1/15EDLCactivated carbon coatingactivated carbon fabricporous electrodeselectrolyteion transport |
| spellingShingle | Joshua Bates Foivos Markoulidis Constantina Lekakou Giuliano M. Laudone Design of Porous Carbons for Supercapacitor Applications for Different Organic Solvent-Electrolytes C EDLC activated carbon coating activated carbon fabric porous electrodes electrolyte ion transport |
| title | Design of Porous Carbons for Supercapacitor Applications for Different Organic Solvent-Electrolytes |
| title_full | Design of Porous Carbons for Supercapacitor Applications for Different Organic Solvent-Electrolytes |
| title_fullStr | Design of Porous Carbons for Supercapacitor Applications for Different Organic Solvent-Electrolytes |
| title_full_unstemmed | Design of Porous Carbons for Supercapacitor Applications for Different Organic Solvent-Electrolytes |
| title_short | Design of Porous Carbons for Supercapacitor Applications for Different Organic Solvent-Electrolytes |
| title_sort | design of porous carbons for supercapacitor applications for different organic solvent electrolytes |
| topic | EDLC activated carbon coating activated carbon fabric porous electrodes electrolyte ion transport |
| url | https://www.mdpi.com/2311-5629/7/1/15 |
| work_keys_str_mv | AT joshuabates designofporouscarbonsforsupercapacitorapplicationsfordifferentorganicsolventelectrolytes AT foivosmarkoulidis designofporouscarbonsforsupercapacitorapplicationsfordifferentorganicsolventelectrolytes AT constantinalekakou designofporouscarbonsforsupercapacitorapplicationsfordifferentorganicsolventelectrolytes AT giulianomlaudone designofporouscarbonsforsupercapacitorapplicationsfordifferentorganicsolventelectrolytes |