@article{ART003274550},
author={Deng Chengqing and Pan Kai and Zhang Xiaohui and Lai Feiyan and Yang Guangchang and Guo Jiawen},
title={Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries},
journal={Carbon Letters},
issn={1976-4251},
year={2025},
volume={35},
number={6},
pages={2981-2991},
doi={10.1007/s42823-025-00971-x}
TY - JOUR
AU - Deng Chengqing
AU - Pan Kai
AU - Zhang Xiaohui
AU - Lai Feiyan
AU - Yang Guangchang
AU - Guo Jiawen
TI - Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries
JO - Carbon Letters
PY - 2025
VL - 35
IS - 6
PB - Korean Carbon Society
SP - 2981
EP - 2991
SN - 1976-4251
AB - Bimetallic sulfides, as high-performance anode materials, exhibit high theoretical capacity. However, their practical application is hindered by inherent limitations, such as low electrical conductivity, sluggish charge transfer kinetics, and severe volume expansion. Interface-engineered heterostructures have emerged as a universal strategy to synergistically enhance conductive networks and suppress mechanical degradation. Carbon-based composites serve as optimal substrates due to their high conductivity and structural flexibility. In this study, we leverage the hierarchical porous architecture of expanded graphite (EG) to confine the self-assembly of Zn/Co precursors via a thiourea-assisted hydrothermal method, enabling in situ growth of Zn0.76Co0.24S nanoparticles within EG interlayers. Interfacial S–C covalent bonding, induced by π–π conjugation, establishes robust nanoscale coupling between Zn0.76Co0.24S and the carbon framework. The resulting “sandwich” heterostructure demonstrates exceptional cyclability (1086.9 mAh·g−1 after 500 cycles at 1.0 A·g−1) and rate capability (541.7 mAh·g−1 at 2.0 A·g−1). This work provides a generalizable design paradigm for high-performance multimetallic sulfide anodes through atomic-scale interface engineering.
KW - Bimetallic sulfides;Expanded graphite;Interface engineering;Heterostructure;Lithium-storage kinetics
DO - 10.1007/s42823-025-00971-x
ER -
Deng Chengqing, Pan Kai, Zhang Xiaohui, Lai Feiyan, Yang Guangchang and Guo Jiawen. (2025). Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries. Carbon Letters, 35(6), 2981-2991.
Deng Chengqing, Pan Kai, Zhang Xiaohui, Lai Feiyan, Yang Guangchang and Guo Jiawen. 2025, "Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries", Carbon Letters, vol.35, no.6 pp.2981-2991. Available from: doi:10.1007/s42823-025-00971-x
Deng Chengqing, Pan Kai, Zhang Xiaohui, Lai Feiyan, Yang Guangchang, Guo Jiawen "Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries" Carbon Letters 35.6 pp.2981-2991 (2025) : 2981.
Deng Chengqing, Pan Kai, Zhang Xiaohui, Lai Feiyan, Yang Guangchang, Guo Jiawen. Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries. 2025; 35(6), 2981-2991. Available from: doi:10.1007/s42823-025-00971-x
Deng Chengqing, Pan Kai, Zhang Xiaohui, Lai Feiyan, Yang Guangchang and Guo Jiawen. "Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries" Carbon Letters 35, no.6 (2025) : 2981-2991.doi: 10.1007/s42823-025-00971-x
Deng Chengqing; Pan Kai; Zhang Xiaohui; Lai Feiyan; Yang Guangchang; Guo Jiawen. Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries. Carbon Letters, 35(6), 2981-2991. doi: 10.1007/s42823-025-00971-x
Deng Chengqing; Pan Kai; Zhang Xiaohui; Lai Feiyan; Yang Guangchang; Guo Jiawen. Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries. Carbon Letters. 2025; 35(6) 2981-2991. doi: 10.1007/s42823-025-00971-x
Deng Chengqing, Pan Kai, Zhang Xiaohui, Lai Feiyan, Yang Guangchang, Guo Jiawen. Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries. 2025; 35(6), 2981-2991. Available from: doi:10.1007/s42823-025-00971-x
Deng Chengqing, Pan Kai, Zhang Xiaohui, Lai Feiyan, Yang Guangchang and Guo Jiawen. "Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries" Carbon Letters 35, no.6 (2025) : 2981-2991.doi: 10.1007/s42823-025-00971-x
