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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201900189
|2 doi
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|a pubmed25n0989.xml
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|a eng
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| 100 |
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|a Romero, Jorge
|e verfasserin
|4 aut
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| 245 |
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|a Giant Enhancement in the Supercapacitance of NiFe-Graphene Nanocomposites Induced by a Magnetic Field
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|c 2019
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a The rapid rise in energy demand in the past years has prompted a search for low-cost alternatives for energy storage, supercapacitors being one of the most important devices. It is shown that a dramatic enhancement (≈1100%, from 155 to 1850 F g-1 ) of the specific capacitance of a hybrid stimuli-responsive FeNi3 -graphene electrode material can be achieved when the charge/discharge cycling is performed in the presence of an applied magnetic field of 4000 G. This result is related to an unprecedented magnetic-field-induced metal segregation of the FeNi3 nanoparticles during the cycling, which results in the appearance of small Ni clusters (<5 nm) and, consequently, in an increase in pseudocapacitive sites. The results open the door to a systematic improvement of the capacitance values of hybrid supercapacitors, while moving the research in this area towards the development of magnetically addressable energy-storage devices
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|a Journal Article
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|a magnetic materials
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|a metal segregation
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4 |
|a nanocomposites
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4 |
|a supercapacitors
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|a Prima-Garcia, Helena
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Varela, Maria
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Miralles, Sara G
|e verfasserin
|4 aut
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|a Oestreicher, Víctor
|e verfasserin
|4 aut
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1 |
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|a Abellán, Gonzalo
|e verfasserin
|4 aut
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| 700 |
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|a Coronado, Eugenio
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 31(2019), 28 vom: 17. Juli, Seite e1900189
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
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|g volume:31
|g year:2019
|g number:28
|g day:17
|g month:07
|g pages:e1900189
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|u http://dx.doi.org/10.1002/adma.201900189
|3 Volltext
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