Peidian Chong, Shijie Yu, Lin Zheng, Lei Zhang, Mingdeng Wei, Hongfei Liu, Yi Ren, Jianbiao Wang,
Hierarchical rose-like VS2 with sulfur vacancies for high-performance all-solid-state lithium-ion batteries,
Journal of Energy Storage,
Volume 147,
2026,
120286,
ISSN 2352-152X,
https://doi.org/10.1016/j.est.2025.120286
Abstract:
The interfacial incompatibility between anode materials and solid electrolytes remains a critical challenge that
impedes the further development of all-solid-state lithium-ion batteries (ASSLIBs). To address this challenge, we
report the synthesis of hierarchical rose-like vanadium disulfide (VS2) structures with engineered sulfur va
cancies, prepared via a hydrothermal approach followed by controlled calcination. The resulting porous archi
tecture effectively shortens Li+diffusion pathways and accommodates volumetric changes associated with Li+
insertion and extraction processes, as corroborated by finite element simulations (FES) and X-ray computed
tomography (X-CT) analyses. As an anode material in ASSLIBs, the sulfur-deficient VS2 (S-VS2) demonstrates
markedly enhanced electrochemical performance. When tested at a current density of 0.1 A g 1, the electrode of
S-VS2 demonstrates a high reversible capacity of 684.6 mAh g 1 after 50 cycles. Moreover, a stable capacity of
536.7 mAh g 1 can be maintained at a high current density 0.5 A g 1. When assembled into a full cell, the highest
energy density was achieved in comparison with other transition metal sulfides-based anodes, indicating great
potential applicability
License type:
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Funding Info:
There was no specific funding for the research done