Premium
Fluoroethylene Carbonate Enabling a Robust LiF‐rich Solid Electrolyte Interphase to Enhance the Stability of the MoS 2 Anode for Lithium‐Ion Storage
Author(s) -
Zhu Zhiqiang,
Tang Yuxin,
Lv Zhisheng,
Wei Jiaqi,
Zhang Yanyan,
Wang Renheng,
Zhang Wei,
Xia Huarong,
Ge Mingzheng,
Chen Xiaodong
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201712907
Subject(s) - electrolyte , anode , interphase , lithium (medication) , cathode , materials science , chemical engineering , carbonate , lithium carbonate , electrode , decomposition , ion , chemistry , inorganic chemistry , metallurgy , organic chemistry , ionic bonding , medicine , genetics , engineering , biology , endocrinology
As a high‐capacity anode for lithium‐ion batteries (LIBs), MoS 2 suffers from short lifespan that is due in part to its unstable solid electrolyte interphase (SEI). The cycle life of MoS 2 can be greatly extended by manipulating the SEI with a fluoroethylene carbonate (FEC) additive. The capacity of MoS 2 in the electrolyte with 10 wt % FEC stabilizes at about 770 mAh g −1 for 200 cycles at 1 A g −1 , which far surpasses the FEC‐free counterpart (ca. 40 mAh g −1 after 150 cycles). The presence of FEC enables a robust LiF‐rich SEI that can effectively inhibit the continual electrolyte decomposition. A full cell with a LiNi 0.5 Co 0.3 Mn 0.2 O 2 cathode also gains improved performance in the FEC‐containing electrolyte. These findings reveal the importance of controlling SEI formation on MoS 2 toward promoted lithium storage, opening a new avenue for developing metal sulfides as high‐capacity electrodes for LIBs.