In Operando Probing of Lithium-Ion Storage on Single-Layer Graphene

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 31(2019), 23 vom: 07. Juni, Seite e1808091
1. Verfasser:	Ni, Kun (VerfasserIn)
Weitere Verfasser:	Wang, Xiangyang, Tao, Zhuchen, Yang, Jing, Shu, Na, Ye, Jianglin, Pan, Fei, Xie, Jian, Tan, Ziqi, Sun, Xuemei, Liu, Jie, Qi, Zhikai, Chen, Yanxia, Wu, Xiaojun, Zhu, Yanwu
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2019
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article density functional theory graphene in operando lithium-ion storage

Beschreibung
Zusammenfassung:	© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Despite high-surface area carbons, e.g., graphene-based materials, being investigated as anodes for lithium (Li)-ion batteries, the fundamental mechanism of Li-ion storage on such carbons is insufficiently understood. In this work, the evolution of the electrode/electrolyte interface is probed on a single-layer graphene (SLG) film by performing Raman spectroscopy and Fourier transform infrared spectroscopy when the SLG film is electrochemically cycled as the anode in a half cell. The utilization of SLG eliminates the inevitable intercalation of Li ions in graphite or few-layer graphene, which may have complicated the discussion in previous work. Combining the in situ studies with ex situ observations and ab initio simulations, the formation of solid electrolyte interphase and the structural evolution of SLG are discussed when the SLG is biased in an electrolyte. This study provides new insights into the understanding of Li-ion storage on SLG and suggests how high-surface-area carbons could play proper roles in anodes for Li-ion batteries
Beschreibung:	Date Revised 30.09.2020 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.201808091