Lithium metal electrode with increased air stability and robust solid electrolyte interphase realized by silane coupling agent modification
Date
2021
Authors
Wang, Y.
Wang, Z.
Zhao, L.
Fan, Q.
Zeng, X.
Liu, S.
Pang, W.K.
He, Y.B.
Guo, Z.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Advanced Materials, 2021; 33(14):2008133-1-2008133-9
Statement of Responsibility
Yanyan Wang, Zhijie Wang, Liang Zhao, Qining Fan, Xiaohui Zeng, Sailin Liu ... et al.
Conference Name
Abstract
The quality of the solid electrolyte interphase (SEI) layer is the decisive factor for the electrochemical performance of Li-metal-based batteries. Due to the absence of effective bonding, a natural SEI layer may exfoliate from the Li anode during interfacial fluctuations. Here, a silane coupling agent is introduced to serve as an adhesion promoter to bridge these two dissimilar materials via both chemical bonding and physical intertwining effects. Its inorganic reactive groups can combine with the Li substrate by forming LiOSi bonds, while organic functional groups can take part in the formation of the SEI layer and thereby bond with SEI components. Li metal electrodes with silane coupling agent modification exhibit excellent electrochemical performance, even under extreme testing conditions. This modification layer with dense structure could also protect the Li metal from corrosion by air, evidenced by the comparable electrochemical activity of the modified Li metal electrodes even after being exposed in air for 2 h. This design provides a promising pathway for the development of Li metal electrodes that will be stable both in electrolyte and in air.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
© Wiley-VCH GmbH