TY - JOUR
T1 - Fluoroethylene carbonate as an electrolyte additive for improving interfacial stability of high-voltage LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathode
AU - Liu, Lili
AU - Wang, Shili
AU - Zhang, Ziyan
AU - Fan, Juntian
AU - Qi, Wen
AU - Chen, Shimou
N1 - Publisher Copyright:
© 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2019/3/4
Y1 - 2019/3/4
N2 - In this work, fluoroethylene carbonate (FEC) is used as an additive to improve the interface stability between LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM622) electrode and electrolyte under high voltage (4.6 V vs Li/Li + ). The improved cycle stability and electrochemical impedance spectroscopy (EIS) studies imply the formation of robust, uniform and less-resistive film on the surface of NCM622. The results from TEM, SEM and XPS demonstrate that FEC facilitates the formation of CEI layer, and the FEC-derived CEI protects against not only the decomposition of the electrolyte solvent but also oxidation of the NCM622 electrode.
AB - In this work, fluoroethylene carbonate (FEC) is used as an additive to improve the interface stability between LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM622) electrode and electrolyte under high voltage (4.6 V vs Li/Li + ). The improved cycle stability and electrochemical impedance spectroscopy (EIS) studies imply the formation of robust, uniform and less-resistive film on the surface of NCM622. The results from TEM, SEM and XPS demonstrate that FEC facilitates the formation of CEI layer, and the FEC-derived CEI protects against not only the decomposition of the electrolyte solvent but also oxidation of the NCM622 electrode.
KW - Electrolyte additives
KW - Fluoroethylene carbonate
KW - High voltage
KW - Lithium-ion batteries
UR - http://www.scopus.com/inward/record.url?scp=85049599956&partnerID=8YFLogxK
U2 - 10.1007/s11581-018-2641-0
DO - 10.1007/s11581-018-2641-0
M3 - Article
AN - SCOPUS:85049599956
SN - 0947-7047
VL - 25
SP - 1035
EP - 1043
JO - Ionics
JF - Ionics
IS - 3
ER -