Authors
|
Guo, J. ; Omar, A. ; Urbanski, A. ; Oswald, S. ; Uhlmann, P. ; Giebeler, L.
|
Title
|
Electrochemical Behavior of Microparticulate Silicon Anodes in Ether-Based Electrolytes: Why Does LiNO3 Affect Negatively?
|
Date
|
15.05.2019
|
Number
|
56894
|
Abstract
|
Silicon has great potential to be applied as an alternative anode in lithium-ion batteries. However, the electrochemical performance of silicon anodes in ether-based electrolytes, which is essential for better understanding the electrochemistry of sulfur/silicon full cells, has not been fully investigated. In this work, the effect of ether-based electrolytes on the cycling performance and surface chemistry of silicon electrodes containing microsized particles was systematically studied. In LiNO3-containing ether-based electrolyte, silicon electrode showed the fastest capacity fading and the shortest cycle life. Electrochemical impedance spectroscopy, scanning electron microscope, and X-ray photoelectron spectroscopy were employed to examine the solid electrolyte interphase (SEI) properties of silicon microparticles. An unfavorable SEI is responsible for poor cycling performance in ether-based electrolytes. Our results shed new light on the reason for short cycle life of most of the reported sulfur/silicon full cells.
|
Publisher
|
ACS Applied Energy Materials
|
Wikidata
|
|
Citation
|
ACS Applied Energy Materials 2 (2019) 4411-4420
|
DOI
|
https://doi.org/10.1021/ACSAEM.9B00590
|
Tags
|
|