Lithium-ion storage in honeycomb-structured biomass-derived porous carbon

NurulHuda, Shah and Ling, Jin Kiong and Bindhu, Devu and Ghufira, . and Izan Izwan, Misnon and Sreekala, Chandrasekharan Nair Omanaamma and Yang, Chun-Chen and Jose, Rajan (2025) Lithium-ion storage in honeycomb-structured biomass-derived porous carbon. Diamond and Related Materials, 15 (111797). pp. 1-12. ISSN 0925-9635. (Published)

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Abstract

Honeycomb-shaped porous carbon (HSPC) offers unique surface properties for rapid ion transport through the bulk and hence could deliver desirable electrochemical charge storage performance; however, their fabrication is through time and cost intensive sacrificial template methods. Herein, HSPC was synthesized from a carefully selected plant component (coconut rachis) containing a dense network of phloem and xylem. The synthesized activated carbon has relatively high carbon content (>80 %), desirable textural characteristics (specific surface area ~ 1290 m2⸱g−1 and pore diameter ~ 2.0 nm), and high edge-plane fraction (ratio between relative density of edge and basal plane ~0.26). The HSPC electrodes delivered specific capacitance up to ~126 F⸱g−1 at 100 mA⸱g−1 at a potential window of 2–4 V in the HSPC//LiPF6//Li lithium metal capacitor configuration and retained ~98 % of its initial capacity after 1000 cycles with coulombic efficiency ~100 %. The performance of the device has been validated by electrochemical impedance spectroscopy before and after cycling. A postmortem analysis confirmed structural and chemical stability of the device upon cycling.

Item Type:	Article
Uncontrolled Keywords:	Biowaste; Energy storage; Electric double layer; Materials sustainability; Supercapacitors
Subjects:	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:	20 Nov 2024 06:28
Last Modified:	21 Nov 2024 23:46
URI:	http://umpir.ump.edu.my/id/eprint/42953
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