Journal
IONICS
Volume 19, Issue 11, Pages 1567-1572Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-013-0888-z
Keywords
Trialkoxysilanes; Electrolytes; High voltage; Lithium-ion batteries
Funding
- National Science Foundation of China [50973112]
- Hundred Talents Program of the Chinese Academy of Sciences (CAS)
- CAS-Guangdong Collaboration Program [20108]
- Science & Technology Project of Guangzhou [11A44061500]
- Amperex Technology Limited (China)
Ask authors/readers for more resources
Oligo(ethylene oxide)-functionalized trialkoxysilanes were synthesized through hydrosilylation reaction by reacting trialkoxysilane with oligo(ethylene oxide) allyl methyl ether using PtO2 as a catalyst. The physical properties of these compounds, such as viscosity, dielectric constant, and ionic conductivity, were characterized. Among them, [3-(2-(2-methoxyethoxy)ethoxy)-propyl]triethoxysilane (TESM2) exhibited a commercial viable ionic conductivity of 1.14 mS cm(-1) and a wide electrochemical window of 5.2 V. A preliminary investigation was conducted by using TESM2 as an electrolyte solvent for high-voltage applications in lithium-ion batteries. Using 1 M LiPF6 in TESM2 with 1 vol% vinyl carbonate as an electrolyte, LiCoO2/Li half-cell delivered a specific capacity of 153.9 mAh g(-1) and 90 % capacity retention after 80 cycles (3.0-4.35 V, 28 mA g(-1)); Li1.2Ni0.2Mn0.6O2/Li4Ti5O12 full cell exhibited the initial capacity of 161.3 mAh g(-1) and 86 % capacity retention after 30 cycles (0.5-3.1 V, 18 mA g(-1)).
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