LiTFSI/ electrolytes

Wu, H. Wick, C. D., Computational Investigation on the Role of Plasticizers on Ion Conductivity in Poly(Ethylene Oxide) Litfsi Electrolytes. Macromolecules 2010, 43, 3502-3510. 

Fig. 7.11 (a) Diffusion in a PEO/LiTFSI electrolyte from simulation and experiment, (b) Ionic conductivity in a PEO/LiTFSI electrolyte from simulation and experiment... 

The Li cation self-diffusion coefficient in a binary EOi2/LiTFSI electrolyte was dominated (90%) by Li" vehicular diffusion of the Li" with an EO12 solvent. In EO12TFSI /Li" molten salt electrolyte, half of the Li" motion was attributed to... 

Wu H, Wick CD (2010) Computational Investigation on the role of plasticizos on ion conductivity in poly(ethylene oxide) LiTFSI electrolytes. Macromolecules 43 3502—3510... 

These two effects were clearly seen in a study undertaken by Kara et al. [36]. In their work, PPy doped with bis(trifluoromethanesulfonyl)imide (TFSI) was actuated in various water/propylene carbonate (PC) solutions containing LiTFSI. The optimum performance of 23.6 % maximum strain at a strain rate of 10.8 % s was achieved within an actuation solution that consisted of 60 % water and 40 % PC. Improvements in both the strain rate and the maximum strain were seen with actuation in LiTFSI electrolytes of water/PC blended solvents over actuation in electrolytes of either water or PC alone. The improved actuation was attributed to the fact that a greater swelling occurred from the PC solvent (enabling a faster and easier ion transfer) and an improvement in the ionic conductivity from the water solvent (enabling a better charge transfer). As such, the optimised performance for this system was realised at 40 % PC. 

MARZANTOWICZ, M., DYGAS, J.R., KROK, F., NOWII SKI, J.L., TOMASZEWSKA, A., FLORJAI CZYK, z. and ZYGADLO-MONIKOWSKA, E., 2006b. Crystalline phases, morphology and conductivity of PEO LiTFSI electrolytes in the eutectic region. Journal of Power Sources, 159(1 Spec, iss.), 420-430. 

The dielectric study of nanocomposite polymer electrolytes performed by Jayathilaka et al indicated that the quantity of free ions was not modified significantly with the addition of AI2O3 to PEO/LiTFSI electrolyte. However an increase in ion mobility was noted. 

Some authors " observed improved mechanical properties in polymer electrolytes with added nanofiUers. The rheological behaviour of filled and unfilled PEO-LiTFSI electrolytes was studied at 85 °C. A significant... 

The highest room temperature conductivity of the electrolyte system d-U(2000) LiTFSIis3.2 x 10 S cm registeredwiththed-U(2000)35LiTFSI composition. This value is similar to that reported by Armand et al. for the POE LiTFSI electrolyte system. The highest conductivity over the temperature range studied was found with the d-U(2000)ioLiTFSI ormolyte, and was recorded as 1.2 x 10 S cm at 95°C (Fig. 5.1). 

The interfacial properties of gel electrolytes containing ethylene carbonate immobilized in a polyacrylonitrile (PAN) matrix with a lithium (bis)trifluoromethane sulfonimide (LiTFSI) salt have been studied 1139]. SEI stability appeared to be strongly dependent on the LiTFSI concentration. A minimum value of / SE1 of about 1000 Qcm2 was obtained after 200h... 

Interestingly, the nonpolyether-type polymer electrolyte 7 showed a relatively high lithium transference number of 0.47 in the presence of LiTFSI. This is possibly due to the absence of strong binding of ether oxygen to the lithium cation. Moreover, anion trapping of the boron atom is not retarded by coordination of oxygen to the... 

Several polymer gel electrolytes were prepared by changing the mixing ratio of ZILs to polymer. The polymer gel electrolytes were obtained as translucent films up to 80 wt% of the ZIL/LiTFSI content. When the content of the ZIL/LiTFSI mixture was less than 40wt%, they were obtained as flexible but white films. Figure 27.4 shows the effect of ZIL/LiTFSI mixture content on the ionic conductivity for polymer gel electrolytes. The ionic conductivity of these polymer gel... 

Chen, R. J., Z. Y. He, L. Li, F. Wu, B. Xu, and M. Xie. 2012. Pore size effect of carbon electrodes on the electrochemical double-layer capacitance in LiTFSI/2-oxazolidinone complex electrolyte. Journal of Physical Chemistry C 116 2594—2599. 

Bernhard R, Latini A, Panero S, Scrosati B, Hassoun J. Poly(ethylenglycol)dimethylether-lithium bis(trifluoromethanesulfonyl)imide, pegSOOdme-litfsi, as high viscosity electrolyte for lithium ion batteries. J Power Sources 2013 226 329-33. 

In fact it is hard to measure the intrinsic anodic behavior of LLMOj, cathode materials in standard electrolyte solutions because at too high potentials the anodic reactions of solution species may dominate the potentio-dynamic response. However, ionic liquid solutions based on quaternary ammonium cations, TFSI anion, and LiTFSI salt demonstrate very high anodic stability. The passivation of Al current collector is excellent in these solutions. So, the anodic stability of Al... 

MD simulations were used to study a number of electrolytes of potential interest to lithium battery applications EC DMC/LiPEg [52], EC/LiTESI [53, 54], DMC/ LiTFSI [55], GBL/LiTFSI [55], and acetonitrile doped with LiPEg, LiC104, L1BF4, LiDFOB, LiTFSI [56-58], oligoethers/Li salts [59-61], acetamide/LiTFSI [62],... 

Borodin, O. Smith, G. D., Development of Many-Body Polarizable Force Fields for Li-Battery Applications 2. Litfsi-Doped Ohgoether, Polyether, and Carbonate-Based Electrolytes. J. Phys. Chem. B 2006,110, 6293-6299. 

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