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Issue 7, 2021
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Effect of pomelo seed-derived carbon on the performance of supercapacitors

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Abstract

Electrochemical ultracapacitors derived from green and sustainable materials could demonstrate superior energy output and an ultra-long cycle life, which could contribute to next-generation applications. Herein, we utilize pomelo seeds, a bio-waste from pomelo, in high-energy and high-power supercapacitors by a facile low-cost pyrolysis and activation method. The as-synthesized hierarchically porous carbon is surface-engineered with a large quantity of nitrogen and sulfur heteroatoms to give a high specific capacitance of ∼845 F g−1 at 1 A g−1. An ultra-high stability of ∼93.8% even after 10 000 cycles (10 A g−1) is achieved at room temperature. Moreover, a maximum energy density of ∼85 W h kg−1 at a power density of 1.2 kW kg−1 could be achieved in 1.2 V aqueous symmetrical supercapacitors. The results provide new insights that will be of use in the development of high-performance, green supercapacitors for advanced energy storage systems.

Graphical abstract: Effect of pomelo seed-derived carbon on the performance of supercapacitors

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Supplementary files

Article information


Submitted
18 Sep 2020
Accepted
12 Feb 2021
First published
23 Feb 2021

This article is Open Access

Nanoscale Adv., 2021,3, 2007-2016
Article type
Paper

Effect of pomelo seed-derived carbon on the performance of supercapacitors

Z. Yin, Y. Xu, J. Wu and J. Huang, Nanoscale Adv., 2021, 3, 2007
DOI: 10.1039/D0NA00778A

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