@article{ART003274516},
author={Suman and Rani Gita and Bhawna and Kumar Harish and Devi Jai and Siddharth},
title={B, S doped zero-dimensional carbon quantum dots from bio-waste for high density supercapacitors},
journal={Carbon Letters},
issn={1976-4251},
year={2025},
volume={35},
number={6},
pages={2689-2702},
doi={10.1007/s42823-025-00945-z}
TY - JOUR
AU - Suman
AU - Rani Gita
AU - Bhawna
AU - Kumar Harish
AU - Devi Jai
AU - Siddharth
TI - B, S doped zero-dimensional carbon quantum dots from bio-waste for high density supercapacitors
JO - Carbon Letters
PY - 2025
VL - 35
IS - 6
PB - Korean Carbon Society
SP - 2689
EP - 2702
SN - 1976-4251
AB - Double-layer supercapacitors (SCs) based on carbon quantum dots (CQDs) are a novel and highly potential electrical energy storage technology. They have a high-power density (Pd) and a long span life, which are desirable for electric automobiles, however, their specific capacitance (Csp) needs to be improved. Here, we introduce an affordable and environmentally sustainable method to enhance the capacitance of Boron-Sulphur doped carbon quantum dots (B,S-CQDs) from Oloptum miliaceum (Grass) via the hydrothermal method. The findings show that heteroatom-doping might greatly enhance the Csp and energy density (Ed) when compared to undoped CQDs. As a consequence, the B,S-CQDs demonstrate a high Csp of 390 F g−1 at 0.1 A g−1 and 152 F g−1 at 1.0 A g−1, revealing excellent rate performance. Along with the electrode demonstrates superb coulombic efficiency with only 2% efficiency loss after 3000 cycles. Furthermore, the B,S-CQDs with a wide voltage range of 0.8 V yields a remarkable Ed of 48.0 Wh kg−1 and Pd of 524 W kg−1. These promising findings demonstrate an economical and environmentally friendly electrode material for high-performance SCs. This study offers ideas for the design and preparation of SCs electrode materials and represents a major endeavour to turn waste biomass (smilograss) into a useful electrode material.
KW - Nanomaterials;Carbon quantum dots;Super capacitor;Capacitance;Green synthesis
DO - 10.1007/s42823-025-00945-z
ER -
Suman, Rani Gita, Bhawna, Kumar Harish, Devi Jai and Siddharth. (2025). B, S doped zero-dimensional carbon quantum dots from bio-waste for high density supercapacitors. Carbon Letters, 35(6), 2689-2702.
Suman, Rani Gita, Bhawna, Kumar Harish, Devi Jai and Siddharth. 2025, "B, S doped zero-dimensional carbon quantum dots from bio-waste for high density supercapacitors", Carbon Letters, vol.35, no.6 pp.2689-2702. Available from: doi:10.1007/s42823-025-00945-z
Suman, Rani Gita, Bhawna, Kumar Harish, Devi Jai, Siddharth "B, S doped zero-dimensional carbon quantum dots from bio-waste for high density supercapacitors" Carbon Letters 35.6 pp.2689-2702 (2025) : 2689.
Suman, Rani Gita, Bhawna, Kumar Harish, Devi Jai, Siddharth. B, S doped zero-dimensional carbon quantum dots from bio-waste for high density supercapacitors. 2025; 35(6), 2689-2702. Available from: doi:10.1007/s42823-025-00945-z
Suman, Rani Gita, Bhawna, Kumar Harish, Devi Jai and Siddharth. "B, S doped zero-dimensional carbon quantum dots from bio-waste for high density supercapacitors" Carbon Letters 35, no.6 (2025) : 2689-2702.doi: 10.1007/s42823-025-00945-z
Suman; Rani Gita; Bhawna; Kumar Harish; Devi Jai; Siddharth. B, S doped zero-dimensional carbon quantum dots from bio-waste for high density supercapacitors. Carbon Letters, 35(6), 2689-2702. doi: 10.1007/s42823-025-00945-z
Suman; Rani Gita; Bhawna; Kumar Harish; Devi Jai; Siddharth. B, S doped zero-dimensional carbon quantum dots from bio-waste for high density supercapacitors. Carbon Letters. 2025; 35(6) 2689-2702. doi: 10.1007/s42823-025-00945-z
Suman, Rani Gita, Bhawna, Kumar Harish, Devi Jai, Siddharth. B, S doped zero-dimensional carbon quantum dots from bio-waste for high density supercapacitors. 2025; 35(6), 2689-2702. Available from: doi:10.1007/s42823-025-00945-z
Suman, Rani Gita, Bhawna, Kumar Harish, Devi Jai and Siddharth. "B, S doped zero-dimensional carbon quantum dots from bio-waste for high density supercapacitors" Carbon Letters 35, no.6 (2025) : 2689-2702.doi: 10.1007/s42823-025-00945-z
