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@article{ART003185721},
author={Guanru Chang and Lei Wang and Kunzhen Li and Chang Zhu and Hui Zhang and Min Guo},
title={Preparation and performance study of flexible all-solid-state Co9S8@P–C @ NiCo-LDH / / AC asymmetric supercapacitors},
journal={Carbon Letters},
issn={1976-4251},
year={2025},
volume={35},
number={1},
pages={211-219},
doi={10.1007/s42823-024-00784-4}

TY - JOUR
AU - Guanru Chang
AU - Lei Wang
AU - Kunzhen Li
AU - Chang Zhu
AU - Hui Zhang
AU - Min Guo
TI - Preparation and performance study of flexible all-solid-state Co9S8@P–C @ NiCo-LDH / / AC asymmetric supercapacitors
JO - Carbon Letters
PY - 2025
VL - 35
IS - 1
PB - Korean Carbon Society
SP - 211
EP - 219
SN - 1976-4251
AB - Supercapacitors, emerging as energy storage devices, face challenges in practical applications due to their relatively low energy density. In this study, we fabricate a novelty supercapacitor cathode composed of Co9S8, conductive phosphorus-doped carbon (P–C), and layered double hydroxides (LDH). The incorporation of a conductive layer significantly enhances charge transfer, capacity, and electrochemical stability, ultimately elevating the electrochemical performance of the cathode. The fabricated Co9S8@P–C@NiCo-LDH demonstrates an exceptional area-specific capacitance of 3.9 F cm−2 at a current density of 2 mA cm−2, along with remarkable cyclic stability, maintaining 98.9% of their capacity after 2000 cycles. The flexible asymmetric all-solid-state supercapacitor (AAS) assembled with Co9S8@P–C@NiCo-LDH and activated carbon (AC) exhibits a remarkable energy density of 0.065 mWh cm−2, corresponding to 325.0 W h kg−1. Moreover, it maintains excellent cycling stability even at elevated current densities of 10 mA cm−2. Following 5000 consecutive charge/discharge cycles, the AAS device maintains approximately 91.1% of its initial specific capacity. The AAS device successfully powered a 3V white LED for 5 min, further emphasizing its practicality.
KW - Co9S8 nanotubes;Asymmetric supercapacitor;NiCo-LDH;P–C charge transfer layer
DO - 10.1007/s42823-024-00784-4
ER -

Guanru Chang, Lei Wang, Kunzhen Li, Chang Zhu, Hui Zhang and Min Guo. (2025). Preparation and performance study of flexible all-solid-state Co9S8@P–C @ NiCo-LDH / / AC asymmetric supercapacitors. Carbon Letters, 35(1), 211-219.

Guanru Chang, Lei Wang, Kunzhen Li, Chang Zhu, Hui Zhang and Min Guo. 2025, "Preparation and performance study of flexible all-solid-state Co9S8@P–C @ NiCo-LDH / / AC asymmetric supercapacitors", Carbon Letters, vol.35, no.1 pp.211-219. Available from: doi:10.1007/s42823-024-00784-4

Guanru Chang, Lei Wang, Kunzhen Li, Chang Zhu, Hui Zhang, Min Guo "Preparation and performance study of flexible all-solid-state Co9S8@P–C @ NiCo-LDH / / AC asymmetric supercapacitors" Carbon Letters 35.1 pp.211-219 (2025) : 211.

Guanru Chang, Lei Wang, Kunzhen Li, Chang Zhu, Hui Zhang, Min Guo. Preparation and performance study of flexible all-solid-state Co9S8@P–C @ NiCo-LDH / / AC asymmetric supercapacitors. 2025; 35(1), 211-219. Available from: doi:10.1007/s42823-024-00784-4

Guanru Chang, Lei Wang, Kunzhen Li, Chang Zhu, Hui Zhang and Min Guo. "Preparation and performance study of flexible all-solid-state Co9S8@P–C @ NiCo-LDH / / AC asymmetric supercapacitors" Carbon Letters 35, no.1 (2025) : 211-219.doi: 10.1007/s42823-024-00784-4

Guanru Chang; Lei Wang; Kunzhen Li; Chang Zhu; Hui Zhang; Min Guo. Preparation and performance study of flexible all-solid-state Co9S8@P–C @ NiCo-LDH / / AC asymmetric supercapacitors. Carbon Letters, 35(1), 211-219. doi: 10.1007/s42823-024-00784-4

Guanru Chang; Lei Wang; Kunzhen Li; Chang Zhu; Hui Zhang; Min Guo. Preparation and performance study of flexible all-solid-state Co9S8@P–C @ NiCo-LDH / / AC asymmetric supercapacitors. Carbon Letters. 2025; 35(1) 211-219. doi: 10.1007/s42823-024-00784-4

Guanru Chang, Lei Wang, Kunzhen Li, Chang Zhu, Hui Zhang, Min Guo. Preparation and performance study of flexible all-solid-state Co9S8@P–C @ NiCo-LDH / / AC asymmetric supercapacitors. 2025; 35(1), 211-219. Available from: doi:10.1007/s42823-024-00784-4

Guanru Chang, Lei Wang, Kunzhen Li, Chang Zhu, Hui Zhang and Min Guo. "Preparation and performance study of flexible all-solid-state Co9S8@P–C @ NiCo-LDH / / AC asymmetric supercapacitors" Carbon Letters 35, no.1 (2025) : 211-219.doi: 10.1007/s42823-024-00784-4