Interfacial engineering of reduced graphene oxide for high-performance supercapacitor materials
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Dosyalar
Tarih
2020
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier B.V.
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
To solve the problems related to the re-stacking of reduced graphene oxides (rGO) and further improve their surface chemical behaviors to satisfy supercapacitor demands. The rGO decorated with graphene quantum dots has been successfully prepared via a facile low-power ultrasonic method. It is demonstrated the graphene quantum dots/reduced graphene oxide electrode has a high specific capacitance of 312 F g?1, which is nearly three times higher than that of the reduced graphene oxide (132 F g?1). The enhanced super-capacitive performances of graphene quantum dots/reduced graphene oxide have been attributed to the introduction of graphene quantum dots, which effectively prevent the aggregation and restacking of reduced graphene oxide sheets, promoting its surface exposed to the electrolyte for sufficient mass transfer. Meanwhile, these features provide more pathways for the transportation of electrons between the interlayer of reduced graphene oxide sheets. Afterward, a detailed energy storage mechanism was analyzed.
Açıklama
*Akpınar, Işıl ( Aksaray, Yazar )
Anahtar Kelimeler
Asymmetric Supercapacitors, Graphene Quantum Dots, Reduced Graphene Oxide, Synergistic Effect
Kaynak
Journal of Electroanalytical Chemistry
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
878
Sayı
-
