Conducting polymer micro-supercapacitors for flexible energy storage and Ac line-filtering

Handle URI:
http://hdl.handle.net/10754/575733
Title:
Conducting polymer micro-supercapacitors for flexible energy storage and Ac line-filtering
Authors:
Kurra, Narendra ( 0000-0002-0916-7902 ) ; Hota, Mrinal Kanti ( 0000-0003-4336-8051 ) ; Alshareef, Husam N. ( 0000-0001-5029-2142 )
Abstract:
We propose a novel surfactant-mediated process to fabricate flexible microsupercapacitors (MSCs) combining conventional photolithography and electrochemical deposition. The anionic surfactant mediates the process of electropolymerisation at a lower anodic potential while causing template effects in producing porous conducting poly(3,4-ethylenedioxythiophene) (PEDOT) electrodes. Using this strategy, PEDOT MSCs with remarkable performance in terms of tunable frequency response and energy density are achieved. Specifically, ultrahigh scan rate capability up to 500V/s is achieved with a crossover frequency of 400Hz at a phase angle of -45°. This is the first polymer-based redox microsupercapacitor with excellent frequency characteristics other than carbonaceous-based electrochemical double layer capacitors reported so far in the literature. Thus, the micro-supercapacitors exhibit maximum areal cell capacitance of 9mF/cm2 with a volumetric stack capacitance of 50F/cm3 in 1M H2SO4 aqueous electrolyte. The flexibility and stability of these PEDOT MSCs is tested in aqueous gel electrolyte which showed a capacitance retention up to 80% over 10,000 cycles with a Coulombic efficiency of 100%. The maximum energy density of solid state ion gel based PEDOT MSCs was found to be 7.7mWh/cm3, which is comparable to the lithium based thin film batteries and superior to the current state-of-the-art carbon and metal oxide based MSCs. Further, the tandem configuration of flexible solid state ion gel based PEDOT MSCs is employed to demonstrate it as a power source for glowing a red light emitting diode. © 2015 Elsevier Ltd.
KAUST Department:
Materials Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Functional Nanomaterials and Devices Research Group
Publisher:
Elsevier BV
Journal:
Nano Energy
Issue Date:
Apr-2015
DOI:
10.1016/j.nanoen.2015.03.018
Type:
Article
ISSN:
2211-2855
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorKurra, Narendraen
dc.contributor.authorHota, Mrinal Kantien
dc.contributor.authorAlshareef, Husam N.en
dc.date.accessioned2015-08-24T08:36:48Zen
dc.date.available2015-08-24T08:36:48Zen
dc.date.issued2015-04en
dc.identifier.issn2211-2855en
dc.identifier.doi10.1016/j.nanoen.2015.03.018en
dc.identifier.urihttp://hdl.handle.net/10754/575733en
dc.description.abstractWe propose a novel surfactant-mediated process to fabricate flexible microsupercapacitors (MSCs) combining conventional photolithography and electrochemical deposition. The anionic surfactant mediates the process of electropolymerisation at a lower anodic potential while causing template effects in producing porous conducting poly(3,4-ethylenedioxythiophene) (PEDOT) electrodes. Using this strategy, PEDOT MSCs with remarkable performance in terms of tunable frequency response and energy density are achieved. Specifically, ultrahigh scan rate capability up to 500V/s is achieved with a crossover frequency of 400Hz at a phase angle of -45°. This is the first polymer-based redox microsupercapacitor with excellent frequency characteristics other than carbonaceous-based electrochemical double layer capacitors reported so far in the literature. Thus, the micro-supercapacitors exhibit maximum areal cell capacitance of 9mF/cm2 with a volumetric stack capacitance of 50F/cm3 in 1M H2SO4 aqueous electrolyte. The flexibility and stability of these PEDOT MSCs is tested in aqueous gel electrolyte which showed a capacitance retention up to 80% over 10,000 cycles with a Coulombic efficiency of 100%. The maximum energy density of solid state ion gel based PEDOT MSCs was found to be 7.7mWh/cm3, which is comparable to the lithium based thin film batteries and superior to the current state-of-the-art carbon and metal oxide based MSCs. Further, the tandem configuration of flexible solid state ion gel based PEDOT MSCs is employed to demonstrate it as a power source for glowing a red light emitting diode. © 2015 Elsevier Ltd.en
dc.publisherElsevier BVen
dc.subjectAc-line filteringen
dc.subjectConducting polymeren
dc.subjectFlexibleen
dc.subjectMicropseudocapacitorsen
dc.subjectSolid stateen
dc.titleConducting polymer micro-supercapacitors for flexible energy storage and Ac line-filteringen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentFunctional Nanomaterials and Devices Research Groupen
dc.identifier.journalNano Energyen
kaust.authorKurra, Narendraen
kaust.authorHota, Mrinal Kantien
kaust.authorAlshareef, Husam N.en
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