@article{ART003274550},
author={Chengqing Deng and Kai Pan and Xiaohui Zhang and Feiyan Lai and Guangchang Yang and Jiawen Guo},
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 - Chengqing Deng
AU - Kai Pan
AU - Xiaohui Zhang
AU - Feiyan Lai
AU - Guangchang Yang
AU - Jiawen Guo
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 -
Chengqing Deng, Kai Pan, Xiaohui Zhang, Feiyan Lai, Guangchang Yang and Jiawen Guo. (2025). Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries. Carbon Letters, 35(6), 2981-2991.
Chengqing Deng, Kai Pan, Xiaohui Zhang, Feiyan Lai, Guangchang Yang and Jiawen Guo. 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
Chengqing Deng, Kai Pan, Xiaohui Zhang, Feiyan Lai, Guangchang Yang, Jiawen Guo "Expanded graphite-confined bimetallic sulfide heterostructure enables high-capacity and long-life lithium-ion batteries" Carbon Letters 35.6 pp.2981-2991 (2025) : 2981.
Chengqing Deng, Kai Pan, Xiaohui Zhang, Feiyan Lai, Guangchang Yang, Jiawen Guo. 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
Chengqing Deng, Kai Pan, Xiaohui Zhang, Feiyan Lai, Guangchang Yang and Jiawen Guo. "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
Chengqing Deng; Kai Pan; Xiaohui Zhang; Feiyan Lai; Guangchang Yang; Jiawen Guo. 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
Chengqing Deng; Kai Pan; Xiaohui Zhang; Feiyan Lai; Guangchang Yang; Jiawen Guo. 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
Chengqing Deng, Kai Pan, Xiaohui Zhang, Feiyan Lai, Guangchang Yang, Jiawen Guo. 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
Chengqing Deng, Kai Pan, Xiaohui Zhang, Feiyan Lai, Guangchang Yang and Jiawen Guo. "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
