Your browser doesn't support javascript.
loading
Visualizing and Regulating Dynamic Evolution of Interfacial Electrolyte Configuration during De-solvation Process on Lithium-Metal Anode.
Wang, Junhao; Luo, Jing; Wu, Haichuan; Yu, Xiaoyu; Wu, Xiaohong; Li, Zhengang; Luo, Haiyan; Zhang, Haitang; Hong, Yuhao; Zou, Yeguo; Cao, Shuohui; Qiao, Yu; Sun, Shi-Gang.
Afiliação
  • Wang J; 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, Xiamen University, 361005, Xiamen, P. R. China.
  • Luo J; MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Department of Electronic Science, Xiamen University, 361005, Xiamen, P. R. China.
  • Wu H; 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, Xiamen University, 361005, Xiamen, P. R. China.
  • Yu X; 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, Xiamen University, 361005, Xiamen, P. R. China.
  • Wu X; Fujian Provincial Key Laboratory of Functional Materials and Applications, Institute of Advanced Energy Materials, School of Materials Science and Engineering, Xiamen University of Technology, 361024, Xiamen, P. R. China.
  • Li Z; 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, Xiamen University, 361005, Xiamen, P. R. China.
  • Luo H; 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, Xiamen University, 361005, Xiamen, P. R. China.
  • Zhang H; 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, Xiamen University, 361005, Xiamen, P. R. China.
  • Hong Y; Innovation Labratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), 361024, Xiamen, P. R. China.
  • Zou Y; 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, Xiamen University, 361005, Xiamen, P. R. China.
  • Cao S; Innovation Labratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), 361024, Xiamen, P. R. China.
  • Qiao Y; MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Department of Electronic Science, Xiamen University, 361005, Xiamen, P. R. China.
  • Sun SG; 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, Xiamen University, 361005, Xiamen, P. R. China.
Angew Chem Int Ed Engl ; 63(17): e202400254, 2024 Apr 22.
Article em En | MEDLINE | ID: mdl-38441399
ABSTRACT
Acting as a passive protective layer, solid-electrolyte interphase (SEI) plays a crucial role in maintaining the stability of the Li-metal anode. Derived from the reductive decomposition of electrolytes (e.g., anion and solvent), the SEI construction presents as an interfacial process accompanied by the dynamic de-solvation process during Li-metal plating. However, typical electrolyte engineering and related SEI modification strategies always ignore the dynamic evolution of electrolyte configuration at the Li/electrolyte interface, which essentially determines the SEI architecture. Herein, by employing advanced electrochemical in situ FT-IR and MRI technologies, we directly visualize the dynamic variations of solvation environments involving Li+-solvent/anion. Remarkably, a weakened Li+-solvent interaction and anion-lean interfacial electrolyte configuration have been synchronously revealed, which is difficult for the fabrication of anion-derived SEI layer. Moreover, as a simple electrochemical regulation strategy, pulse protocol was introduced to effectively restore the interfacial anion concentration, resulting in an enhanced LiF-rich SEI layer and improved Li-metal plating/stripping reversibility.
Palavras-chave

Texto completo: 1 Base de dados: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Ano de publicação: 2024 Tipo de documento: Article