Borassus flabellifer Fruit Flesh Derived Hierarchical Porous Partly Graphitic Carbon as a Sustainable Electrode for Supercapacitors

Saha, Shalakha and Potphode, Darshna and Sharma, Chandra Shekhar (2022) Borassus flabellifer Fruit Flesh Derived Hierarchical Porous Partly Graphitic Carbon as a Sustainable Electrode for Supercapacitors. Energy & Fuels, 36 (1). pp. 638-654. ISSN 0887-0624

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Abstract

The present work provides a straightforward two-step strategy of carbonization, followed by KOH activation, for transforming Borassus flabellifer fruit flesh, one of the cost-effective and sustainable lignocellulose biomass to porous activated carbon for utilization in energy storage systems. The acquired activated Borassus flabellifer fruit flesh (ABFF) carbon exhibits features like high surface area (∼1087.8 m2 g-1) with surface functionalities, hierarchical porous morphology (presence of micropores and mesopores), together with some partially graphitic domain, some of the prerequisites for demonstration of excellent electrochemical performance. Taking advantage of the structural features and chemical composition, the ABFF carbon, when assembled in a symmetrical two-electrode configuration, exhibits an impressive specific capacitance of 226 F g-1 and 159 F g-1 in 1 M H2SO4 and neat ionic liquid (IL) EMIMBF4 electrolyte. The as-fabricated symmetric device attained a maximum energy density of 8 Wh kg-1 in the aqueous medium, while an enhanced energy density of 50 Wh kg-1 was achieved in the nonaqueous medium. ©

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IITH Creators:

IITH Creators	ORCiD
Sharma, Chandra Shekhar	https://orcid.org/0000-0003-3821-1471

Item Type:

Article

Additional Information:

The authors acknowledge the financial support received from the Ministry of Education and Department of Heavy Industries, Govt. of India through IMPRINT Project 7035. The JEOL scanning electron microscope (JEOL, Model JSM-7800F) used in this study was procured from the Department of Science and Technology funding under the DST-FIST program (Grant No. SR/FST/ETI- 421/2016). The authors acknowledge the contribution of Dr. Sai Santosh Kumar Raavi (IIT-Hyderabad) and his team for conducting the Photoluminescence (PL) study.

Uncontrolled Keywords:

Carbonisation; Cost effective; Energy density; Graphitic carbons; Hierarchical porous; High surface area; KOH activation; Storage systems; Surface functionalities; Two-steps strategy

Subjects:

Chemical Engineering

Divisions:

Department of Chemical Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

15 Jul 2022 12:07

Last Modified:

15 Jul 2022 12:07

URI:

http://raiithold.iith.ac.in/id/eprint/9738