Regulating Dynamic Evolution of Interfacial Electrolyte Configuration via Inert Cation Induced Anion Anchoring to Stabilize Lithium‐Metal Anode
Abstract
Abstract Interfacial stability in high‐energy‐density lithium metal batteries (LMBs) hinges on precise regulation of dynamic interfacial electrolyte configuration. Although inert cations are frequently employed to stabilize Li‐metal anode, their interfacial adsorption behavior and the resultant evolution of the electrolyte/electrode interface remain elusive. Herein, using in‐situ spectroscopy, we visualized the adsorption of inert cations, exemplified by tetrabutylammonium (TBA + ). Furthermore, the inherent anion‐lean, solvent‐rich interface formed during desolvation was mitigated by the electrostatic interaction between TBA + and anions. This anion‐anchoring effect promotes preferential anion decomposition, thereby suppressing parasitic reactions associated with solvent decomposition. Consequently, the cycling stability and reversibility of Li stripping/plating are significantly enhanced. This work not only refreshes the understanding of inert cations on regulating the interfacial electrolyte configuration, but also highlights the close relationship between the interfacial solvation configuration and the SEI architecture, offering fundamental insights for potential electrolyte design.
Article Details
Authors (20)
Junhao Wang
Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering
Yaopeng Li
Wenbin Tu
State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering Xiamen University Xiamen P. R. China
Haitang Zhang
Xiaoyu Yu
Yuran Yang
State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering
Haiyan Luo
State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering
Qingao Zhao
Yaxin Ru
State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering
Ming Chen
Yuhao Hong
Jinyu Ye
State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering
Jian‐Feng Li
College of Materials State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering College of Energy and College of Physical Science and Technology Xiamen University Xiamen China
Na Liu
Chuying Ouyang
Hansen Wang
Fujian Science & Technology Innovation Laboratory for Energy Devices (21C-Lab)
Yeguo Zou
State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering
Guang Feng
Yu Qiao
Shi‐Gang Sun
State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen P. R. China