82830-49-7, Name is 2-Fluoro-1,4-dimethoxybenzene, molecular formula is C8H9FO2, belongs to ethers-buliding-blocks compound, is a common compound. In a patnet, author is Tian, Zhenchuan, once mentioned the new application about 82830-49-7, HPLC of Formula: C8H9FO2.
Solid electrolyte membranes prepared from poly(arylene ether sulfone)-g-poly(ethylene glycol) with various functional end groups for lithium-ion battery
A series of poly(arylene ether sulfone)-g-poly(ethylene glycol)s (PAES-g-PEG)s with different functional groups of -CH3, -OH, -2OH, and -CN were synthesized for the application of solid polymer electrolyte membranes in the lithium-ion battery. Several essential material and membrane properties, including thermal, mechanical, dimensional stability, lithium-ion conductivity, interfacial compatibility, Li-ion transference number, and cell performance, were investigated. The phase separation behavior in the presence of ionic liquid was also examined using small-angle X-ray scattering. As this provision of functional groups led to the suppression of crystallinity but the increment of dielectric permittivity of the electrolytes, both the lithium-ion conductivity and Li-ion transference number were significantly affected. Among them, the PAES-g-PEG membrane containing -CN end group showed the highest lithium-ion conductivity of 8.97 x 10(-4) S cm(-1) and the Li-ion transference number of t(L+)= 0.4, maintaining the rigid solid-state with the tensile strength beyond 1.5 MPa at room temperature. These excellent physical and electrochemical properties of solid-state electrolyte membranes led to quite a high cell capacity of over 138 mAh g(-1) during the 50 charge-discharge cycling tests and stable lithium stripping/plating cyclic performance during 500 cycles.
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