Preparation of Hierarchical Porous Activated Carbon from Banana Leaves for High-performance Supercapacitor: Effect of Type of Electrolytes on Performance

Chanchal Kumar Roy; Syed Shaheen Shah; Akter H. Reaz; Sharmin Sultana; Al Nakib Chowdhury; Shakhawat H. Firoz; Md Hasan Zahir; Mohammed Ameen Ahmed Qasem; Md Abdul Aziz

doi:10.1002/asia.202001342

Preparation of Hierarchical Porous Activated Carbon from Banana Leaves for High-performance Supercapacitor: Effect of Type of Electrolytes on Performance

Chanchal Kumar Roy, Syed Shaheen Shah, Akter H. Reaz, Sharmin Sultana, Al Nakib Chowdhury, Shakhawat H. Firoz, Md Hasan Zahir, Mohammed Ameen Ahmed Qasem, Md Abdul Aziz^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

110 Scopus citations

Abstract

We demonstrate a facile efficient way to fabricate activated carbon nanosheets (ACNSs) consisting of hierarchical porous carbon materials. Simply heating banana leaves with K₂CO₃ produce ACNSs having a unique combination of macro-, meso- and micropores with a high specific surface area of ∼1459 m² g⁻¹. The effects of different electrolytes on the electrochemical supercapacitor performance and stability of the ACNSs are tested using a two-electrode system. The specific capacitance (C_sp) values are 55, 114, and 190 F g⁻¹ in aqueous 0.5 M sodium sulfate, organic 1 M tetraethylammonium tetrafluoroborate in acetonitrile, and pure ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF₆]) electrolytes, respectively. The ACNSs also shows the largest potential window of 3.0 V, the highest specific energy (59 Wh kg⁻¹) and specific power (750 W kg⁻¹) in [BMIM][PF₆]. A mini-prototype device is prepared to demonstrate the practicality of the ACNSs.

Original language	English
Pages (from-to)	296-308
Number of pages	13
Journal	Chemistry - An Asian Journal
Volume	16
Issue number	4
DOIs	https://doi.org/10.1002/asia.202001342
State	Published - 15 Feb 2021

Bibliographical note

Publisher Copyright:
© 2020 Wiley-VCH GmbH

Keywords

1-butyl-3-methylimidazolium hexafluorophosphate
Activated porous carbon nanosheets
Banana leaves
Energy storage
Mesoporous materials
Symmetric supercapacitor
Tetraethylammonium tetrafluoroborate/acetonitrile

ASJC Scopus subject areas

Biochemistry
Organic Chemistry

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Roy, C. K., Shah, S. S., Reaz, A. H., Sultana, S., Chowdhury, A. N., Firoz, S. H., Zahir, M. H., Ahmed Qasem, M. A., & Aziz, M. A. (2021). Preparation of Hierarchical Porous Activated Carbon from Banana Leaves for High-performance Supercapacitor: Effect of Type of Electrolytes on Performance. Chemistry - An Asian Journal, 16(4), 296-308. https://doi.org/10.1002/asia.202001342

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abstract = "We demonstrate a facile efficient way to fabricate activated carbon nanosheets (ACNSs) consisting of hierarchical porous carbon materials. Simply heating banana leaves with K2CO3 produce ACNSs having a unique combination of macro-, meso- and micropores with a high specific surface area of ∼1459 m2 g−1. The effects of different electrolytes on the electrochemical supercapacitor performance and stability of the ACNSs are tested using a two-electrode system. The specific capacitance (Csp) values are 55, 114, and 190 F g−1 in aqueous 0.5 M sodium sulfate, organic 1 M tetraethylammonium tetrafluoroborate in acetonitrile, and pure ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) electrolytes, respectively. The ACNSs also shows the largest potential window of 3.0 V, the highest specific energy (59 Wh kg−1) and specific power (750 W kg−1) in [BMIM][PF6]. A mini-prototype device is prepared to demonstrate the practicality of the ACNSs.",

keywords = "1-butyl-3-methylimidazolium hexafluorophosphate, Activated porous carbon nanosheets, Banana leaves, Energy storage, Mesoporous materials, Symmetric supercapacitor, Tetraethylammonium tetrafluoroborate/acetonitrile",

author = "Roy, {Chanchal Kumar} and Shah, {Syed Shaheen} and Reaz, {Akter H.} and Sharmin Sultana and Chowdhury, {Al Nakib} and Firoz, {Shakhawat H.} and Zahir, {Md Hasan} and {Ahmed Qasem}, {Mohammed Ameen} and Aziz, {Md Abdul}",

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AB - We demonstrate a facile efficient way to fabricate activated carbon nanosheets (ACNSs) consisting of hierarchical porous carbon materials. Simply heating banana leaves with K2CO3 produce ACNSs having a unique combination of macro-, meso- and micropores with a high specific surface area of ∼1459 m2 g−1. The effects of different electrolytes on the electrochemical supercapacitor performance and stability of the ACNSs are tested using a two-electrode system. The specific capacitance (Csp) values are 55, 114, and 190 F g−1 in aqueous 0.5 M sodium sulfate, organic 1 M tetraethylammonium tetrafluoroborate in acetonitrile, and pure ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) electrolytes, respectively. The ACNSs also shows the largest potential window of 3.0 V, the highest specific energy (59 Wh kg−1) and specific power (750 W kg−1) in [BMIM][PF6]. A mini-prototype device is prepared to demonstrate the practicality of the ACNSs.

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Preparation of Hierarchical Porous Activated Carbon from Banana Leaves for High-performance Supercapacitor: Effect of Type of Electrolytes on Performance

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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