Synthesis of porous carbon material based on biomass derived from hibiscus sabdariffa fruits as active electrodes for high-performance symmetric supercapacitors

Carbon-based materials are manufactured as high-performance electrodes using biomass waste in the renewable energy storage field. Herein, four types of hierarchical porous activated carbon using hibiscus sabdariffa fruits (HBFs) as a low-cost biomass precursor are synthesized through carbonization a...

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Bibliographic Details
Published in:RSC advances 2021-01, Vol.11 (1), p.354-363
Main Authors: Hamouda, Hamouda Adam, Cui, Shuzhen, Dai, Xiuwen, Xiao, Lele, Xie, Xuan, Peng, Hui, Ma, Guofu
Format: Article
Language:English
Subjects:
Activated carbon
Ammonium chloride
Biomass
Biomass energy production
Blowing agents
Carbon
Chemistry
Display devices
Electrodes
Energy storage
Flux density
Fruits
Hibiscus sabdariffa
Porous materials
Roselle
Supercapacitors
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Summary:Carbon-based materials are manufactured as high-performance electrodes using biomass waste in the renewable energy storage field. Herein, four types of hierarchical porous activated carbon using hibiscus sabdariffa fruits (HBFs) as a low-cost biomass precursor are synthesized through carbonization and activation. NH 4 Cl is used as a chemical blowing agent to form carbon nanosheets, which are the first types of hibiscus sabdariffa fruit-based carbon (HBFC-1) sample, and KOH also forms a significant bond in the activation process. The prepared HBFC-1 is chosen to manufacture the symmetric supercapacitor due to its rough surface and high surface area (1720.46 m 2 g −1 ), making it show a high specific capacity of 194.50 F g −1 at a current density of 0.5 A g −1 in a three-electrode system. Moreover, the HBFC-1 based symmetric supercapacitor devices display a high energy density of 13.10 W h kg −1 at a power density of 225.00 W kg −1 , and a high specific capacity of 29 F g −1 at 0.5 A g −1 . Additionally, excellent cycle life is observed (about 96% of capacitance retained after 5000 cycles). Therefore, biomass waste, especially hibiscus sabdariffa fruit based porous carbon, can be used as the electrode for high-performance supercapacitor devices. Carbon-based materials are manufactured as high-performance electrodes using biomass waste in the renewable energy storage field.
ISSN:2046-2069
2046-2069
DOI:10.1039/d0ra09509e