Maximum Operation Temperature of ILs

1 Maximum Operation Temperature of ILs with Regard to Thermal 

If the rate constant of decomposition is known, the maximum operation temperature can be easily calculated. For T = constant, integration of Eq. (6.8) yields  

The criterion of a mass loss of 1% per year is quite strict, and hence Eq. (6.15) should only be used for an industrial apphcation of ILs. In other cases, this criterion for the limit of the operation temperature (T may be too strict, for example, for 

Based on the kinetic parameters, the onset temperature of the TGA can now be calculated and compared with the estimated maximum operation temperature as follows [27]  

In se of real TG q eriments with [EMIMJINTfJ and [BMIMKNTf ], lower values are 

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Maximum Operation Temperature of Supported iLs with Regard to Evaporation... 

For supported IL phase systems, the following factors may compHcate the issue of mass loss by evaporation or decomposition and of the maximum operation temperature, respectively ... 

In general, the decomposition of phosphonium-based ILs is accompanied by an endothermic temperature the only exceptions to date are the hexafluorophosphate salts. At a heating rate of 5 °C min a 510 J g exotherm beginning at 310 °C and with a maximum at 337 °C was noted [62]. In addition to the possible evolution of HF, the exothermic decomposition of hexafluorophosphate salts presents an added hazard when operating at or near the upper temperature limit. This is especially important to note when large volumes of such solvents are in service. 

Recently, attention has been also focused on AC/AC capacitors in ILs, which are able to operate at high temperatures with almost zero vapor pressure, and feature nonflammability and high electrochemical stability up to around 4.5 V [14,16,62,74]. However, galvanostatic cycling in/V-methyl-JV-butylpyrrolidinium f)/s(trifluoromethylsulfonyl)imide (PYRj TFSI) demonstrated 3.5 V as maximum working cell potential at 60 °C with an efficiency of 95% [74]. The application of... 

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