Lithium electrolyte stability

On the other hand, since most of these reactions are thermally activated, their kinetics are accelerated by the rise in temperature in an Arrhenius-like manner. Therefore, within a much shorter time scale, the adverse effect of these reactions could become rather significant during the storage or operation of the cells at elevated temperatures. In this sense, the long-term and the thermal stability of electrolytes can actually be considered as two independent issues that are closely intertwined. The study of temperature effects on electrolyte stability is made necessary by the concerns over the aging of electrolytes in lithium-based devices, which in practical applications are expected to tolerate certain high-temperature environments. The ability of an electrolyte to remain operative at elevated temperatures is especially important for applications that are military/space-related or traction-related (e.g., electric or hybrid electric vehicles). On the other hand, elevated tem-... 

Polymer electrolytes have been shown to stabilize the lithium/electrolyte interface, yielding stable and low interface resistance, especially when ceramic additives such as y-LiA102 are used. Furthermore, the 7-LiA102 ceramic additive has been shown to stabilize the polymer amorphous phase and to slow down the recrystallization process [99-103]. Thus, the unique electrochemical performance of lithium metal can be applied in practical devices by substitution of the liquid electrolyte with a solid one whose conductivity and stability can be enhanced with ceramic additives. 

Ered for PPY In Table II is predicted to be quite negative, -3.6 volts (0.3 volts more negative than lithium) and would be difficult to observe due to electrolyte stability problems. Attempts to dope PPY with sodium naphthalide have been unsuccessful(37)—a result which Is quite consistent with our calculations, since it suggests a Ered more negative than the -2.9 volt Ere[Pg.444]

R. Yazami, A. Martinent, in Fluorinated Materials for Energy Conversion, Chap. 9 (T. Nakajima, H. Groult, Eds.), Elsevier, New York, 2005. Fluorinated anions and electrode/ electrolyte stability in lithium batteries. 

D. Moosbauer, S. Zugmann, M. AmereUer, H. J. Gores, J. Chem. Eng. Data 2010, 55, 1794-1798. Effect of ionic liquids as additives on lithium electrolytes Conductivity, electrochemical stability, and aluminum corrosion. 

Li-air batteries potentially can offer substantial increase in specific energy relative to today s most advanced Li-ion battery. At present, much remains to be learned about the fundamental chemistry behind Li-air batteries. Among these is the role of the electrolyte in the electrochemical formation and decomposition of lithium oxides. Compared to Li-ion batteries, the Li-airajj batteries are a relatively new concept and many problems remain to be solved. One of the key problems is the stability of the electrolytes on which this chapter is focused. The electrolyte stability is an issue... 

Lithium Battery Electrolyte Stability and Performance from Molecular Modeling and Simulations provide an example of the power of this experimental technique. Molecular orbital calculations have proven useful and have the... 

Lithium Battery Electrolyte Stability and Performance from Molecular Modeling and Simulations... 

Lithium Battoy Electrolyte Stability and Performance liom Molecular... 

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