@article{ART003342007},
author={Kalla Reddi Mohan Naidu and Cheruku Rajesh and Lakkaboyana Sivarama Krishna and Doraswamy Sreedhar and Lee Jaewoong},
title={Thin-walled porous carbon from black-eyed pea peels: a green route toward high-power supercapacitors},
journal={Carbon Letters},
issn={1976-4251},
year={2026},
volume={36},
number={1},
pages={533-545},
doi={10.1007/s42823-026-01028-3}
TY - JOUR
AU - Kalla Reddi Mohan Naidu
AU - Cheruku Rajesh
AU - Lakkaboyana Sivarama Krishna
AU - Doraswamy Sreedhar
AU - Lee Jaewoong
TI - Thin-walled porous carbon from black-eyed pea peels: a green route toward high-power supercapacitors
JO - Carbon Letters
PY - 2026
VL - 36
IS - 1
PB - Korean Carbon Society
SP - 533
EP - 545
SN - 1976-4251
AB - Biomass-derived porous carbons are increasingly examined as practical electrode materials for supercapacitors because they combine low cost with adaptable structural features. In this study, black-eyed pea peels, a widely available agricultural residue, is used as the precursor and activated with either K2CO3 or KMnO4, which resulted in noticeable differences in pore development and electrochemical behaviour. Thermogravimetric analysis showed that the derived carbons retain good thermal stability. X-ray diffraction, X-ray photoelectron spectroscopy, and Raman measurements indicated a largely disordered carbon framework with only limited graphitic domains, offering numerous defect sites that support ion adsorption. Scanning electron microscopy revealed thin carbon walls and an ultra-microporous network with a considerable proportion of mesopores, which was further supported by Brunauer–Emmett–Teller analysis. The material obtained using K2CO3 delivered a capacitance of around 236 F g− 1, sustained almost 99% of its performance during long cycling, and responded better at high current. The KMnO4 activated sample exhibited additional pseudocapacitive contributions but lower stability. Overall, these results underline the role of activation chemistry in governing pore architecture and surface functionality and show that agricultural residues can be transformed into viable electrode materials for high-power energy-storage applications.
KW - Black-eyed pea peels Supercapacitor Cycling stability Large surface area Mesoporous nature Graphitic carbon structure
DO - 10.1007/s42823-026-01028-3
ER -
Kalla Reddi Mohan Naidu, Cheruku Rajesh, Lakkaboyana Sivarama Krishna, Doraswamy Sreedhar and Lee Jaewoong. (2026). Thin-walled porous carbon from black-eyed pea peels: a green route toward high-power supercapacitors. Carbon Letters, 36(1), 533-545.
Kalla Reddi Mohan Naidu, Cheruku Rajesh, Lakkaboyana Sivarama Krishna, Doraswamy Sreedhar and Lee Jaewoong. 2026, "Thin-walled porous carbon from black-eyed pea peels: a green route toward high-power supercapacitors", Carbon Letters, vol.36, no.1 pp.533-545. Available from: doi:10.1007/s42823-026-01028-3
Kalla Reddi Mohan Naidu, Cheruku Rajesh, Lakkaboyana Sivarama Krishna, Doraswamy Sreedhar, Lee Jaewoong "Thin-walled porous carbon from black-eyed pea peels: a green route toward high-power supercapacitors" Carbon Letters 36.1 pp.533-545 (2026) : 533.
Kalla Reddi Mohan Naidu, Cheruku Rajesh, Lakkaboyana Sivarama Krishna, Doraswamy Sreedhar, Lee Jaewoong. Thin-walled porous carbon from black-eyed pea peels: a green route toward high-power supercapacitors. 2026; 36(1), 533-545. Available from: doi:10.1007/s42823-026-01028-3
Kalla Reddi Mohan Naidu, Cheruku Rajesh, Lakkaboyana Sivarama Krishna, Doraswamy Sreedhar and Lee Jaewoong. "Thin-walled porous carbon from black-eyed pea peels: a green route toward high-power supercapacitors" Carbon Letters 36, no.1 (2026) : 533-545.doi: 10.1007/s42823-026-01028-3
Kalla Reddi Mohan Naidu; Cheruku Rajesh; Lakkaboyana Sivarama Krishna; Doraswamy Sreedhar; Lee Jaewoong. Thin-walled porous carbon from black-eyed pea peels: a green route toward high-power supercapacitors. Carbon Letters, 36(1), 533-545. doi: 10.1007/s42823-026-01028-3
Kalla Reddi Mohan Naidu; Cheruku Rajesh; Lakkaboyana Sivarama Krishna; Doraswamy Sreedhar; Lee Jaewoong. Thin-walled porous carbon from black-eyed pea peels: a green route toward high-power supercapacitors. Carbon Letters. 2026; 36(1) 533-545. doi: 10.1007/s42823-026-01028-3
Kalla Reddi Mohan Naidu, Cheruku Rajesh, Lakkaboyana Sivarama Krishna, Doraswamy Sreedhar, Lee Jaewoong. Thin-walled porous carbon from black-eyed pea peels: a green route toward high-power supercapacitors. 2026; 36(1), 533-545. Available from: doi:10.1007/s42823-026-01028-3
Kalla Reddi Mohan Naidu, Cheruku Rajesh, Lakkaboyana Sivarama Krishna, Doraswamy Sreedhar and Lee Jaewoong. "Thin-walled porous carbon from black-eyed pea peels: a green route toward high-power supercapacitors" Carbon Letters 36, no.1 (2026) : 533-545.doi: 10.1007/s42823-026-01028-3
