19685-21-3Relevant articles and documents
Cross-Linked Network Polymer Electrolytes Based on a Polysiloxane Backbone with Oligo(oxyethylene) Side Chains: Synthesis and Conductivity
Zhang, Zhengcheng,Sherlock, David,West, Ryan,West, Robert,Amine, Khalil,Lyons, Leslie J.
, p. 9176 - 9180 (2003)
A novel cross-linked siloxane-based solid polymer network has been synthesized by the hydrosilylation of polymethylhydrosiloxane (PMHS) partly substituted with oligo(ethylene glycol) methyl ether side groups and a α,ω-diallyl poly(ethylene glycol) cross-linking reagent. The ionic conductivities of the networks doped with LiTFSI are high at ambient temperature (σ = 1.33 × 10-4 S cm-1 at the optimum LiTFSI concentration EO/Li+ = 20:1). The temperature dependence of the conductivity followed the VTF form, indicating that polymer segmental motion assists the ion transport in the solid networks.
New inorganic-organic hybrid Li+ ion conducting polymer electrolytes
Fujinami, Tatsuo,Sugie, Kazuhiro,Mori, Kenji,Mehta, Mary Anne
, p. 619 - 620 (1998)
A new series of inorganic-organic hybrid polymer electrolytes containing the aluminate structure were prepared. Incorporation of stronger Lewis acid sites into the polymer in the region of the aluminate bond was effective for enhancing ionic conductivity. The materials were shown to be single Li+ ion conductors.
Plasticizing Li single-ion conductors with low-volatility siloxane copolymers and oligomers containing ethylene oxide and cyclic carbonates
Liang, Siwei,Chen, Quan,Choi, U Hyeok,Bartels, Joshua,Bao, Nanqi,Runt, James,Colby, Ralph H.
, p. 21269 - 21276 (2015)
To prepare a safe electrolyte for lithium ion batteries, two groups of novel low-volatility plasticizers combining pendant cyclic carbonates and short ethylene oxide chains have been successfully synthesized, as confirmed by 1H, 13C and 29Si NMR spectroscopy. The Fox equation describes the composition dependence of the glass transition temperature (Tg) very well for the random polysiloxane-based copolymer plasticizers (11000 g as much as 20 K lower than the Fox equation prediction because of their lower molecular weight (450 g. Mixing with 20 wt% polysiloxane tetraphenyl borate-Li ionomer (14 mol% borate and 86 mol% cyclic carbonate) increases conductivity relative to the neat ionomer by lowering Tg, increasing dielectric constant and providing better solvation of Li+. The best oligomeric plasticizer only has Tg 10 K lower than the Fox prediction but has dielectric constant 30% larger than expected by the Landau-Lifshitz mixing rule, owing to a surprisingly low viscosity, resulting in ambient conductivity 2 × 10-5 S cm-1. For both groups of plasticizers, the fraction of cyclic carbonates relative to ethylene oxide governs the magnitude and temperature dependence of the ionic conductivity.
Anion Receptor, Electrolyte Containing the Anion Receptor and Lithium Ion Battery and Lithium Ion Capacitor Using the Electrolyte
-
Paragraph 0088-0090, (2018/09/30)
The present invention relates to a novel anion acceptor having a high cation transport rate and improved lifespan, an electrolyte containing the same, and a lithium ion battery and a lithium ion capacitor manufactured using the electrolyte and, more specifically, to a compound represented by chemical formula 1. In the chemical formula 1, n is an integer from 1 to 50, and X is one or more selected from the group consisting of -NR_1R_2, -NR_3R_4, -Ph(-(m)-R_5), and -O-(CH_2CH_2O)_y-CH_3.COPYRIGHT KIPO 2018
