High carbon containing biomaterial offering honeycomb morphology as a charge storing electrode in aqueous alkaline electrolytes

Bindhu, Devu and Sreekala, Chandrasekharannair Omanaamma and Nurulhuda, Mohamed Shah and Ling, JinKiong and Izan Izwan, Misnon and Yang, Chun-Chen and Jose, Rajan (2024) High carbon containing biomaterial offering honeycomb morphology as a charge storing electrode in aqueous alkaline electrolytes. Journal of Electroanalytical Chemistry, 967 (118423). pp. 1-10. ISSN 1572-6657. (Published)

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Abstract

Research on unconventional carbon structures and morphologies obtainable from renewable sources are a way forward in realizing sustainable materials for the next-generation industry. Herein, renewable porous carbon from a biomass (coconut rachis) with high carbon content (∼81 %) and honeycomb morphology (inner diameter ∼60 μm and wall thickness ∼500 nm) is developed as an electrochemical capacitor electrode. The coconut rachis upon chemical activation yield a surface area ∼1,630 m2‧g−1 and desirable pore characteristics for storing aqueous cations. The electrochemical charge storability of the porous carbon electrodes in 1 M KOH, NaOH and LiOH electrolytes showed specific capacitances ∼320, ∼140 and ∼102 F‧g−1, respectively. Electrochemical impedance spectra validated the higher capacitance in the KOH electrolyte. Besides, symmetric supercapacitor full cells were fabricated using the present electrode in 1 M KOH electrolyte with desirable charge storage properties. Given the abundance of the precursor and desirable charge storage characteristics, the present work could be useful in developing the coconut rachis-resourced honeycomb-shaped porous carbon as a charge storing electrode.

Item Type:	Article
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	Bioresources; Carbon negative precursors; Electrochemical double layer capacitors (EDLC); Materials sustainability; Supercapacitors
Subjects:	Q Science > Q Science (General) T Technology > TP Chemical technology
Faculty/Division:	Faculty of Industrial Sciences And Technology Institute of Postgraduate Studies Centre for Advanced Intelligent Materials
Depositing User:	Mrs Norsaini Abdul Samat
Date Deposited:	13 Aug 2024 04:35
Last Modified:	13 Aug 2024 04:35
URI:	http://umpir.ump.edu.my/id/eprint/42329
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