Статья

Revealing the Multifunctions of Li<sub>3</sub>N in the Suspension Electrolyte for Lithium Metal Batteries

Mun Sek KimDepartment of Chemical Engineering, Stanford University, Stanford, California 94305, United StatesZewen ZhangDepartment of Materials Science and Engineering, Stanford University, Stanford, California 94305, United StatesJingyang WangDepartment of Materials Science and Engineering, Stanford University, Stanford, California 94305, United StatesSolomon T. OyakhireDepartment of Chemical Engineering, Stanford University, Stanford, California 94305, United StatesSang Cheol KimDepartment of Materials Science and Engineering, Stanford University, Stanford, California 94305, United StatesZhiao YuDepartment of Chemical Engineering, Stanford University, Stanford, California 94305, United StatesYuelang ChenDepartment of Chemical Engineering, Stanford University, Stanford, California 94305, United StatesDavid BoyleDepartment of Chemistry, Stanford University, Stanford, California 94305, United StatesYusheng YeDepartment of Materials Science and Engineering, Stanford University, Stanford, California 94305, United StatesZhuojun HuangDepartment of Chemical Engineering, Stanford University, Stanford, California 94305, United StatesWenbo ZhangDepartment of Materials Science and Engineering, Stanford University, Stanford, California 94305, United StatesRong XuDepartment of Materials Science and Engineering, Stanford University, Stanford, California 94305, United StatesPhilaphon SayavongDepartment of Chemistry, Stanford University, Stanford, California 94305, United StatesStacey F. BentDepartment of Chemical Engineering, Stanford University, Stanford, California 94305, United StatesJian QinDepartment of Chemical Engineering, Stanford University, Stanford, California 94305, United StatesZhenan BaoDepartment of Chemical Engineering, Stanford University, Stanford, California 94305, United StatesYi CuiDepartment of Energy Science and Engineering, Stanford University, Stanford, California 94305, United States

2023en

ABI

Аннотация

Inorganic-rich solid-electrolyte interphases (SEIs) on Li metal anodes improve the electrochemical performance of Li metal batteries (LMBs). Therefore, a fundamental understanding of the roles played by essential inorganic compounds in SEIs is critical to realizing and developing high-performance LMBs. Among the prevalent SEI inorganic compounds observed for Li metal anodes, Li3N is often found in the SEIs of high-performance LMBs. Herein, we elucidate new features of Li3N by utilizing a suspension electrolyte design that contributes to the improved electrochemical performance of the Li metal anode. Through empirical and computational studies, we show that Li3N guides Li electrodeposition along its surface, creates a weakly solvating environment by decreasing Li+-solvent coordination, induces organic-poor SEI on the Li metal anode, and facilitates Li+ transport in the electrolyte. Importantly, recognizing specific roles of SEI inorganics for Li metal anodes can serve as one of the rational guidelines to design and optimize SEIs through electrolyte engineering for LMBs.

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Идентификаторы

DOI: 10.1021/acsnano.2c12470

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar