Journal
JOURNAL OF POWER SOURCES
Volume 323, Issue -, Pages 134-141Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.05.053
Keywords
Lithium ion battery; High voltage spinel; Fluorinated solvents; High voltage electrolyte
Funding
- National 863 Program [2014AA052202]
- National Natural Science Foundation of China [21373137]
- Shanghai Science and Technology Engineering Research Center Program [13DZ2280200, 15DZ2282000]
Ask authors/readers for more resources
A new electrolyte based on fluorinated 3-(1,1,2,2-tetrafluoroethoxy)-1,1,2,2-tetrafluoropropane (F-EPE) solvent is studied in LiNi0.5Mn1.5O4/Li cells. The electrochemical stability of the electrolyte with 10% F-EPE is carried out by linear sweep voltammetry and electrochemical floating test. These results indicate that the electrolyte with F-EPE has an oxidation potential of more than 5.2 V vs. Li+/Li, which is higher than that without F-EPE and enlarges the oxidative window of electrolyte. A thin and uniform SEI layer is formed on the surface of LiNi0.5Mn1.5O4 cathode by using electrolyte with F-EPE, leads to an improvement in the electrochemical performance, validated by charge-discharge tests, EIS, SEM, TEM, and XPS analysis. (C) 2016 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available