Lithium imides ionicity

Ferrari S, Quartarone E, Mustarelli P, Magistris A, Fagnoni M, Protti S, Gerbaldi C, SpineUa A (2010) Lithium ion conducting PVdF-HFP composite gel electrolytes based on V-methoxyethyl-V-methylpyrrolidinium bis(trifluoromethanesulfonyl)-imide ionic liquid. J Power Sources 195(2) 559-566. doi 10.1016/j.jpowsour.2009.08.015... 

Li L, Wang J, Yang P, Guo S, Wang H, Yang X, Ma X, Yang S, Wu B (2013) Preparation and characterization of gel polymer electrolytes containing N-butyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl) imide ionic liquid for lithium ion batteries. Electrochim Acta 88 147-156. doi 10.1016/j.electacta.2012.10.018... 

Hewlett, P. C., Brack, N., Hollenkamp, A. E, Forsyth, M., and MacFarlane, D. R., Characterization of the lithium surface in N-methyl-N-alkylpyrrolidinium bis(trifluoromethanesulfonyl)imide room-temperature ionic liquid electrolytes, /. Electrochem. Soc., 153, A595-A606,2006. 

The resulting ionic compound is a white solid which melts between 373 and 375 °C (and decomposes to the imide and ammonia above this upper limit as noted above, eventually decomposing to lithium nitride). Experimentally, the standard enthalpy of formation for lithium amide, AHf, is -176 kJ mol ... 

The values were not split into individual ionic ones, but for a series of sodium saits (Wachter et al. 2005) clearly show the effects of the anions on the b values NaOH 0, Na2C03 0.55, NaCl 0.79, NaBr 0.98, NaSCN 0.99, Nal 1.20, NaNOs 1.33, NaC104 1.35, Na2S04 1.8, and also sodium malonate 3.44, ranging from structure-makers to stmcture-breakers. Consideration of the ( -coefficient of Eq. (3.7) for NaCl, 0.79, in conjunction with the values for KCl, 1.5, and CsCl, 2.1 (Chen et al. 2003) show them to be in the expected direction. Asaki et al. (2002) studied the solvent relaxation of aqueous lithium salts, and from their data the -coefficients of Eq. (3.7) can be derived LiCl 0.62, Li triflate 0.86, and Li imide 1.27. The value for LiCl fits in with those of NaCl, KCl, and CsCl. 

Single lithium ion conducting polymer electrolytes have been prepared by the copolymerizahon of hthium(4-styrenesulfonyl)(trifluoromethanesulfonyl) imide and methoxy-poly(ethylene glycol) acrylate [117]. The highest ionic conduchvihes for the copolymer electrolytes are 7.6 x 10 S cm at 25 °C and then grow to reach 10 " S cm at 60 °C, at a raho of ethylene oxide to Li+ of 20.5. 

K. Luo, R. Ffller, B. K. Mandal, Solid State Ionics 2006, 177, 857-861. Synthesis and characterization of novel non-fluorinated tri-Uthium imide salts for use in lithium-ion battery... 

M. Nadherna, J. Reiter, J. Moskon, R. Dominko, J. Power Sources 2011, 196, 7700-7706. Lithium bis(fluorosulfonyl)imide-PYRi4TFSl ionic liquid electrolyte compatible with graphite. 

Endres, R Borisenko, N. El Abedin, S.Z. Hayes, R. Addn, R., The interface ionic liquid(s)/ electrode(s) In situ STM and AFM measurements, Faraday Dsicuss., 2012,154, 221-233. Lassfegues, J.-C. Grondin, J. Talaga, D., Lithium solvation in bis(trifluoromethanesulfonyl) imide-based ionic liquids, Phys. Chem. Chem. Phys., 2006, 8,5629-5632. 

Reiter, J. Nadhema, M. Dominko, R., Graphite and LiCoi/3Mnu3Nii,302 electrodes with piperidinium ionic hquid and lithium bis(fluorosulfonyl)imide for Li-ion batteries, J. Power Sources., 2012, 205, 402-407. 

Novel MEEP-type polyphosphazene-silicate hybrid network membranes (Tg —38 to 67 °C), exhibiting high ionic conductivities with lithium bis(trifluoromethane-sulfonyl)imide (LiTFSI) as the salt, have been prepared as candidates for dimensionally stable solid polymer electrolytes by a designed sequence of steps starting from [NPCl2] and involving the incorporation and hydrolysis of triethoxysilane groups (Scheme 15). ... 

Umebayashi, Y, Mitsugi, T., Fukuda, S., Fujimori, T., Fujii, K., Kanzaki, R., Takeuchi, M. and Ishiguro, S.-L, Lithium ion solvation in room-temperature ionic liquids involving bis(trifluoromethanesulfonyl) imide anion studied by Raman Spectroscopy and DFT calculations, J. Phys. Chem. B 111, 13028-13032 (2007). 

Alarco, P.J., Yaser, A.L., Ravet, N., Armand, M. (2004). Lithium conducting pyrazohum imides plastic crystals a new solid state electrolyte matrix. Solid State Ionics, 172., 1-... 

The idea was to increase the lithium transfer number, which is low in most of ILs, IL-salt mixtures, or IL-acid mixtures. Zwitterions with imidazolium cations covalently bound to anions, such as sulfonate, carbonate, imide, or borate, are solids at room temperature, despite their IL-like structure mixing with bis(trifluoromethylsulfonyl) imide, however, leads to blends that are liquid at room temperature. The organoborate-containing zwitterion-lithium salt mixture (Figure 29.3) displays a high lithium transfer number of 0.69, a high-ionic conductivity of 3.0 x 10 S cm at 50°C, and a low glass transition temperature (-35°C). 

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