Journal
SURFACES AND INTERFACES
Volume 23, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.surfin.2021.101025
Keywords
NB-GO; crumpled graphene oxide; redox reaction; pseudocapacitance; asymmetric supercapacitor
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Funding
- CSIR, New Delhi, India [03(1387)/16/EMR-II]
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N, B co-doped graphene oxide (NB-GO) demonstrates remarkable electrochemical properties, making it an ideal material for supercapacitor applications.
N, B co-doped graphene oxide (NB-GO) establishes a novel electronic structure owing to the distinctive B and N coupling significantly differs from the conventional electrical double-layer mechanism of carbon-based electrodes. The remarkable electrochemical properties of NB-GO are owed by the high content of N (4.61 at.%), and B (4.41 at.%) shrinkages charge transfer resistance, and inflation of the surface polarity as well as pseudocapacitive electm-active sites. The new motifs B-N, C-N, and C-B-N contribute affluent and stable redox-active sites for enhanced pseudocapacitive properties of NB-GO compared to that of the un-doped GO and B doped GO (B-GO), including excellent specific capacitance (885 Fg(-1)), outstanding rate capability (525 Fg(-1) at 10 Ag-1) and good cycle stability (77.8%) retained till 10,000 continuous cycles. NB-GO//RGO asymmetric supercapacitor (ASC) demonstrate an affordable energy density of 23.23 Wh/kg consistent with a massive power density of 872 W/kg with 80% capacitance retention after 10,000 cycles. Therefore, a facile hydrothermal mute will be a successful method for synthesizing NB-GO as an alternative for metal oxide/sulfide and polymer-based pseudocapacitive electrode materials for supercapacitor applications.
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