Regulating the Solvation Structure of Li+ Enables Chemical Prelithiation of Silicon-Based Anodes Toward High-Energy Lithium-Ion Batteries
- Resource Type
- article
- Authors
- Wenjie He; Hai Xu; Zhijie Chen; Jiang Long; Jing Zhang; Jiangmin Jiang; Hui Dou; Xiaogang Zhang
- Source
- Nano-Micro Letters, Vol 15, Iss 1, Pp 1-13 (2023)
- Subject
- Lithium-ion batteries
Silicon-based anodes
Prelithiation
Molecular dynamics simulations
Solvation structure
Technology
- Language
- English
- ISSN
- 2311-6706
2150-5551
Highlights By selecting 4-methylbiphenyl as an anion ligand and 2-methyltetrahydrofuran as a solvent, the as-prepared micro-sized SiO/C anode can achieve an initial Coulombic efficiency of ~100%. Molecular dynamics simulations demonstrate that the ideal prelithiation efficiency can be achieved by choosing appropriate anion ligand and solvent to regulate the solvation structure of Li+. The positive effect of pre-lithiation on cycle performance has been verified by using an in-situ electrochemical dilatometry and solid electrolyte interphase film.