2024-03-28T17:33:56Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1364462016-10-20T09:46:55Zcom_10261_115com_10261_3col_10261_368
DIGITAL.CSIC
author
Yang, Fan
author
Brede, Jens
author
Rogero, Celia
author
Chuvilin, Andrey
author
Knez, Mato
funder
Eusko Jaurlaritza
funder
Ministerio de Economía y Competitividad (España)
funder
European Commission
2016-09-07T09:57:07Z
2016-09-07T09:57:07Z
2015
ACS Applied Materials and Interfaces 7(37): 20513-20519 (2015)
http://hdl.handle.net/10261/136446
10.1021/acsami.5b04704
http://dx.doi.org/10.13039/501100003329http://dx.doi.org/10.13039/501100000780http://dx.doi.org/10.13039/501100003086
Graphene is an attractive material for its physicochemical properties, but for many applications only chemically synthesized forms such as graphene oxide (GO) and reduced graphene oxide (rGO) can be produced in sufficient amounts. If considered as electrode material, the intrinsic defects of GO or rGO may have negative influence on the conductivity and electrochemical properties. Such defects are commonly oxidized sites that offer the possibility to be functionalized with other materials in order to improve performance. In this work, we demonstrate how such ultimately efficient functionalization can be achieved: namely, through controlled binding of very small amount of materials such as RuO2 to rGO by atomic layer deposition (ALD), in this way substituting the native defect sites with RuO2 defects. For the example of a supercapacitor, we show that defect functionalization results in significantly enhanced specific capacitance of the electrode and that its energy density can be stabilized even at high consumption rates.
eng
closedAccess
Ruthenium oxide
Functionalization
Atomic layer deposition
Supercapacitors
Reduced graphene oxide
Functionalization of defect sites in graphene with RuO2 for high capacitive performance
artículo
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URL
https://digital.csic.es/bitstream/10261/136446/1/accesoRestringido.pdf
File
MD5
42637ae8545636bc41605c1740a9a84e
15753
application/pdf
accesoRestringido.pdf