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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1021/la500636m
|2 doi
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|a pubmed25n0792.xml
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|a eng
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|a Wee, Boon-Hong
|e verfasserin
|4 aut
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|a Multilayered poly(p-phenylenevinylene)/reduced graphene oxide film
|b an efficient organic current collector in an all-plastic supercapacitor
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 15.04.2015
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|a Date Revised 13.05.2014
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a This article describes the preparation, using layer-by-layer deposition techniques, of an all-solid-state flexible in-plane supercapacitor based on a poly(ethylene terephthalate) (PET) substrate, laminated with two strata of ultrathin multilayer films composed of 30 polyaniline (PANi)/reduced graphene oxide (RGO) bilayers and 30 poly(p-phenylenevinylene) (PPV)/RGO bilayers. The influence of the (PPV/RGO)30 stratum on the electrochemical properties of the (PANi/RGO)30/(PPV/RGO)30 film (denoted P30) (d = 90.1 nm) supported on a PET was evaluated and compared to the corresponding influence of the (PANi/RGO)53 film (denoted P53) (d = 91.5 nm). The volumetric capacitance of P30 at a discharge current of 20 A/cm(3) (957 F/cm(3)) was much higher than that obtained from P53 (733 F/cm(3)), indicating that the (PPV/RGO)30 film performed well as a current collector. Furthermore, an all-solid-state flexible in-plane EC assembled with P30 electrodes in parallel mode (denoted EC30) exhibited an outstanding volumetric capacitance (152 F/cm(3) at 20 A/cm(3)) with a high energy density (9.4 mW h/cm(3)) and power density (6.5 W/cm(3)), compared to EC53 (assembled with P53). The electron-transfer resistance of the P30 electrode corresponded to only 59% of the P53's value (1.53 vs 2.60 kΩ cm(2)). The high capacitance of EC30 was attributed to the low internal resistance of P30, which resulted from the presence of additional in-plane electrical pathways in the electrode. The enhanced transport led to 85% capacitance retention by EC30 (69% for EC53) after a 1000 charge/discharge cycles test. The series resistance variations (ΔR/R0) of EC30 also indicated good electromechanical durability in the device, with a 5.0% increase in the resistance (contrasted with a 10.8% increase in EC53) over 1000 bending cycles at a minimum radius of 5 mm. The excellent electrochemical properties of EC30 may potentially meet the requirements for miniaturized electrodes in the manufacture of flexible, lightweight, mechanically durable microelectronic applications
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|a Journal Article
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|a Hong, Jong-Dal
|e verfasserin
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 30(2014), 18 vom: 13. Mai, Seite 5267-75
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:30
|g year:2014
|g number:18
|g day:13
|g month:05
|g pages:5267-75
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|u http://dx.doi.org/10.1021/la500636m
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