dc.contributor.author | MENDOZA SANCHEZ, BEATRIZ | en |
dc.contributor.author | NICOLOSI, VALERIA | en |
dc.date.accessioned | 2015-01-19T12:28:11Z | |
dc.date.available | 2015-01-19T12:28:11Z | |
dc.date.issued | 2013 | en |
dc.date.submitted | 2013 | en |
dc.identifier.citation | Mendoza-Sánchez, B., Rasche, B., Nicolosi, V., Grant, P.S., Scaleable ultra-thin and high power density graphene electrochemical capacitor electrodes manufactured by aqueous exfoliation and spray deposition, Carbon, 52, 2013, 337-346 | en |
dc.identifier.other | Y | en |
dc.identifier.uri | http://hdl.handle.net/2262/73012 | |
dc.description | PUBLISHED | en |
dc.description.abstract | Graphene electrodes of high power density were manufactured by a surfactant-water based exfoliation method followed by a scaleable spray-deposition process. Cyclic voltammetry and galvanostatic charge–discharge experiments revealed a combination of electric double layer and pseudocapacitive behavior that, unlike the many graphene-oxide derived electrodes, was maintained to unusually high scan rates of 10,000 mV s−1, reaching a maximum capacitance of 543 μF cm−2 and with a capacitive retention of 57% at 10,000 mV s−1. The performance of graphene electrodes was contrasted with carboxylated single walled carbon nanotubes that showed a sharp decrease in capacitance above 200 mV s−1. Electrochemical impedance spectroscopy analysis showed a fast capacitor response of 17.4 ms for as manufactured electrodes which was further improved to 2.3 ms for surfactant-free 40 nm thick electrodes. A maximum energy density of 75.4 nW h cm−2 gradually decreased as power density increased up to 2.6 mW cm−2. Graphene electrodes showed 100% capacitance retention for 5000 cycles at the high power scan rate of 10,000 mV s−1. | en |
dc.format.extent | 337-346 | en |
dc.language.iso | en | en |
dc.relation.ispartofseries | Carbon | en |
dc.relation.ispartofseries | 52 | en |
dc.rights | Y | en |
dc.subject | Graphene | en |
dc.title | Scaleable ultra-thin and high power density graphene electrochemical capacitor electrodes manufactured by aqueous exfoliation and spray deposition | en |
dc.type | Journal Article | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/nicolov | en |
dc.identifier.rssinternalid | 93181 | en |
dc.identifier.doi | http://dx.doi.org/10.1016/j.carbon.2012.09.035 | en |
dc.rights.ecaccessrights | openAccess | |