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Large-scale single-step synthesis of wrinkled N–S doped 3D graphene like nanosheets from Tender palm shoots for high energy density supercapacitors
Mangisetti S.R., ,
Published in Elsevier
Volume: 46
Issue: 1
Pages: 403 - 415
Herein, we present a simple, large-scale and low-cost process to develop hierarchically porous N–S co-doped 3D wrinkled graphene like nanosheets (3D H-GNS) from carbonization of biomass Tender palm shoots and NaHCO3. Non-corrosive and non-toxic Na2CO3 acts as a reaction mean to control the activation process, developing 3D H-GNS with a high specific surface area of 2095 m2 g−1. A 3D H-GNS-900 electrode exhibits a high specific capacitance of 529 F g−1 (1.5 A g−1) and 330 F g−1 (1 A g−1) in 1 M H2SO4 for 3-electrode and 2-electrode systems respectively. Further, a longer cycle life with 93% capacitance retention over 10,000 cycles at 5 A g−1 is realized. Also, we are successful in fabricating biocompatible solid-state flexible supercapacitor device with 3D H-GNS-900 electrodes in organic electrolyte with 3 V voltage range, demonstrating to run a toy fan and lightning a LED for 15 min after charging for 60 s. © 2020 Hydrogen Energy Publications LLC
About the journal
JournalData powered by TypesetInternational Journal of Hydrogen Energy
PublisherData powered by TypesetElsevier
Open AccessNo