FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2509760432> ?p ?o ?g. }

• W2509760432 endingPage "964" @default.
• W2509760432 startingPage "964" @default.
• W2509760432 abstract "While known for a higher power density than batteries, electrochemical capacitors are limited by their energy density for some energy storage applications. Since the energy density of the device is proportional to the square of operating potential window, an effective way to increase energy density of the device is by increasing the window. Ionic liquid electrolytes are beneficial for this reason since they can theoretically operate at up to 6 V, though experimentally, the value is between 3-4 V, depending on the properties of electrode materials. By employing a novel electrochemical technique to study symmetric supercapacitors with carbon electrodes and ionic liquid electrolytes, we have found one of the possible reasons for the observed smaller operating potential window of ionic liquids in practical applications. We observed that even for a symmetric device, the different properties of the cation and anion results in an asymmetric performance of the two electrodes. However, a solution to this asymmetry is found by mixing two ionic liquids with the same cation, which ultimately results in a higher operating potential window of the device and therefore a higher energy density. 1 Onion-like carbon (OLC) was used as the electrode material due to its large (>500 m 2 /g) outer surface available for ion adsorption and double layer formation, and no internal porosity that could restrict the movement of ions. 2 However, electrode materials can also be made from high surface area carbons that contain a network of pores (e.g., activated or carbide-derived carbon) in which ions are adsorbed during charging. Though they boast a large operating potential window, ionic liquids are known to contain large and bulky ions. This can make it difficult to use an ionic liquid on a porous carbon with a range of pore sizes, some being smaller than the ion size, even though the specific surface area of the electrode material measured by gas adsorption is high and therefore the energy storage capability is more impressive. It has also been shown that the capacitance of porous electrodes is maximized when the ion size and pore size are equal. 3 In this case, the ion is small enough to fit inside the pores while still large enough to take advantage of the surface area within the pore walls. While materials with a large outer surface allow a more accessible surface for adsorbing large ions, their capacitance is limited by their specific surface area. By designing an electrolyte based on mixed ionic liquids, we can match the ions in the mixture to the multiple pore sizes of the electrode material. Recently, it was found that the capacitance of porous carbon could be increased with the presence of multiple ions in the electrolyte mixture. Imidazolium-based ionic liquids are chosen based on their variable alkyl chain length which alters the cation size and bis(trifluoromethylsulfonyl)- imide (TFSI) is chosen as the anion for all ionic liquids. Different porous carbons with varying pore size distributions are used to illustrate the effect of ionic liquid mixture electrolytes. Finally, it has been shown previously that ionic liquid mixture electrolytes can be used to increase the operating temperature window of a supercapacitor to -50 °C – 100 °C. 4 Ionic liquid mixtures have therefore been shown to improve the potential window, the capacitive performance, and the temperature window of supercapacitors, becoming an important area of study in the field of energy storage. 1. Van Aken, K. L., Beidaghi, M. & Gogotsi, Y. Formulation of Ionic-Liquid Electrolyte to Expand the Voltage Window of Supercapacitors. Angew. Chemie 127, 4888–4891 (2015). 2. McDonough, J. K. et al. Influence of the structure of carbon onions on their electrochemical performance in supercapacitor electrodes. Carbon N. Y. 50, 3298–3309 (2012). 3. Lin, R. et al. Solvent effect on the ion adsorption from ionic liquid electrolyte into sub-nanometer carbon pores. Electrochim. Acta 54, 7025–7032 (2009). 4. Lin, R. et al. Capacitive Energy Storage from -50 to 100 C Using an Ionic Liquid Electrolyte. J. Phys. Chem. Lett. 2, 2396–2401 (2011). Figure 1" @default.
• W2509760432 created "2016-09-16" @default.
• W2509760432 creator A5025711704 @default.
• W2509760432 creator A5035467559 @default.
• W2509760432 date "2016-09-01" @default.
• W2509760432 modified "2023-09-27" @default.
• W2509760432 title "(Invited) Ionic Liquid Mixture Electrolytes to Increase the Performance of Electrochemical Capacitors" @default.
• W2509760432 doi "https://doi.org/10.1149/ma2016-02/7/964" @default.
• W2509760432 hasPublicationYear "2016" @default.
• W2509760432 type Work @default.
• W2509760432 sameAs 2509760432 @default.
• W2509760432 citedByCount "1" @default.
• W2509760432 countsByYear W25097604322019 @default.
• W2509760432 crossrefType "journal-article" @default.
• W2509760432 hasAuthorship W2509760432A5025711704 @default.
• W2509760432 hasAuthorship W2509760432A5035467559 @default.
• W2509760432 hasConcept C104779481 @default.
• W2509760432 hasConcept C113196181 @default.
• W2509760432 hasConcept C119599485 @default.
• W2509760432 hasConcept C121332964 @default.
• W2509760432 hasConcept C127413603 @default.
• W2509760432 hasConcept C138679309 @default.
• W2509760432 hasConcept C140205800 @default.
• W2509760432 hasConcept C145148216 @default.
• W2509760432 hasConcept C147789679 @default.
• W2509760432 hasConcept C152520256 @default.
• W2509760432 hasConcept C154881586 @default.
• W2509760432 hasConcept C159985019 @default.
• W2509760432 hasConcept C161790260 @default.
• W2509760432 hasConcept C163258240 @default.
• W2509760432 hasConcept C165801399 @default.
• W2509760432 hasConcept C17525397 @default.
• W2509760432 hasConcept C178790620 @default.
• W2509760432 hasConcept C185592680 @default.
• W2509760432 hasConcept C192562407 @default.
• W2509760432 hasConcept C2182769 @default.
• W2509760432 hasConcept C21881925 @default.
• W2509760432 hasConcept C30066665 @default.
• W2509760432 hasConcept C42360764 @default.
• W2509760432 hasConcept C52192207 @default.
• W2509760432 hasConcept C52859227 @default.
• W2509760432 hasConcept C6585489 @default.
• W2509760432 hasConcept C68801617 @default.
• W2509760432 hasConcept C97355855 @default.
• W2509760432 hasConceptScore W2509760432C104779481 @default.
• W2509760432 hasConceptScore W2509760432C113196181 @default.
• W2509760432 hasConceptScore W2509760432C119599485 @default.
• W2509760432 hasConceptScore W2509760432C121332964 @default.
• W2509760432 hasConceptScore W2509760432C127413603 @default.
• W2509760432 hasConceptScore W2509760432C138679309 @default.
• W2509760432 hasConceptScore W2509760432C140205800 @default.
• W2509760432 hasConceptScore W2509760432C145148216 @default.
• W2509760432 hasConceptScore W2509760432C147789679 @default.
• W2509760432 hasConceptScore W2509760432C152520256 @default.
• W2509760432 hasConceptScore W2509760432C154881586 @default.
• W2509760432 hasConceptScore W2509760432C159985019 @default.
• W2509760432 hasConceptScore W2509760432C161790260 @default.
• W2509760432 hasConceptScore W2509760432C163258240 @default.
• W2509760432 hasConceptScore W2509760432C165801399 @default.
• W2509760432 hasConceptScore W2509760432C17525397 @default.
• W2509760432 hasConceptScore W2509760432C178790620 @default.
• W2509760432 hasConceptScore W2509760432C185592680 @default.
• W2509760432 hasConceptScore W2509760432C192562407 @default.
• W2509760432 hasConceptScore W2509760432C2182769 @default.
• W2509760432 hasConceptScore W2509760432C21881925 @default.
• W2509760432 hasConceptScore W2509760432C30066665 @default.
• W2509760432 hasConceptScore W2509760432C42360764 @default.
• W2509760432 hasConceptScore W2509760432C52192207 @default.
• W2509760432 hasConceptScore W2509760432C52859227 @default.
• W2509760432 hasConceptScore W2509760432C6585489 @default.
• W2509760432 hasConceptScore W2509760432C68801617 @default.
• W2509760432 hasConceptScore W2509760432C97355855 @default.
• W2509760432 hasIssue "7" @default.
• W2509760432 hasLocation W25097604321 @default.
• W2509760432 hasOpenAccess W2509760432 @default.
• W2509760432 hasPrimaryLocation W25097604321 @default.
• W2509760432 hasRelatedWork W2271659520 @default.
• W2509760432 hasRelatedWork W2391265747 @default.
• W2509760432 hasRelatedWork W2531654170 @default.
• W2509760432 hasRelatedWork W2735808936 @default.
• W2509760432 hasRelatedWork W2789628159 @default.
• W2509760432 hasRelatedWork W2808290465 @default.
• W2509760432 hasRelatedWork W2919583959 @default.
• W2509760432 hasRelatedWork W2989453644 @default.
• W2509760432 hasRelatedWork W3092286451 @default.
• W2509760432 hasRelatedWork W3121633071 @default.
• W2509760432 hasVolume "MA2016-02" @default.
• W2509760432 isParatext "false" @default.
• W2509760432 isRetracted "false" @default.
• W2509760432 magId "2509760432" @default.
• W2509760432 workType "article" @default.