Issue 22, 2021

Efficient energy storage in mustard husk derived porous spherical carbon nanostructures

Abstract

An environment-friendly synthesis of highly porous spherical carbon nanostructures (PSCNs), in situ doped with N and S, from mustard seed waste has been accomplished. The synthesised PSCNs have an interconnected network, abundant active interfaces, heteroatom rich content, and notably high porosity/surface area which are favourable for fast ion transport and efficient charge storage. This active material (PSCN), when employed as a lithium-ion battery (LIB) half-cell anode, shows a specific charge capacity of 714 mA h g−1 at a current density of 100 mA g−1 even after 550 cycles with 112% capacity retention and high restoration capability. Furthermore, PSCN//LiFePO4 full cell LIBs show an excellent performance with a highly reversible capacity of ∼195 mA h g−1 at a current density of 50 mA g−1 for 400 cycles. The PSCN electrode also exhibited a specific capacitance of 257.8 F g−1 at a current density of 0.1 A g−1 with ∼93% capacity retention after 10 000 cycles, when used as an electrochemical supercapacitor in aqueous 3 M KOH electrolyte. This work shows the preparation of high value and advanced carbon nanostructured material from renewable bio-mass waste for high-performance electrochemical energy storage applications.

Graphical abstract: Efficient energy storage in mustard husk derived porous spherical carbon nanostructures

Supplementary files

Article information

Article type
Paper
Submitted
02 ago 2021
Accepted
11 set 2021
First published
13 set 2021
This article is Open Access
Creative Commons BY-NC license

Mater. Adv., 2021,2, 7463-7472

Efficient energy storage in mustard husk derived porous spherical carbon nanostructures

A. Pramanik, S. Chattopadhyay, G. De and S. Mahanty, Mater. Adv., 2021, 2, 7463 DOI: 10.1039/D1MA00679G

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