Low viscous and highly conductive phosphonium ionic liquids based on bis(fluorosulfonyl)amide anion as potential electrolytes

Rheological properties of {[bmim]PF6+methanol} mixtures at different temperatures, shear rates and compositions

“…The activation parameters ΔH * and ΔS * compensated each other with the compensation temperature, T comp of about 307 K for the studied systems. This isokinetic effect is often found in dynamics of chemical processes [48][49][50][51]. Compensations for the studied mixtures at all shear rates supported comparable physicochemical processes operative in these fluids.…”

Phosphonium-Based Ionic Liquids

“…The electrochemical stability of the FSA anion based phosphonium RTILs has been evaluated by the voltammetric measurement. Figure 14 illustrates the linear sweep voltammograms measured in pure FSA anion based phosphonium RTILs [33,34]. The voltammetric patterns for the FSA anion based phosphonium RTILs are basically similar to those for the TFSA based phosphonium RTILs shown in Fig.…”

“…The physicochemical properties of FSA anion based phosphonium RTILs we have reported are summarized in Table 3 [33,34]. In addition to the RTILs based on triethylalkylphosphonium cations, we have synthesized the RTILs based on trimethylalkylphosphonium cations derived from trimethylphosphine (P(CH 3 ) 3 ) since the phosphonium cations having smaller cation sizes are expected to give the phosphonium RTILs showing higher transport property.…”

“…We have designed and successfully prepared a series of RTILs based on phosphonium cations together with the FSA anion from the viewpoint of lithium battery application [33,34]. The preparation of FSA anion based phosphonium RTILs can be carried out according to the same procedure as the TFSA anion based phosphonium RTILs depicted in Fig.…”

Influence of Introducing a Benzyl Group on Physical and Electrochemical Properties of Bis(fluorosulfonyl)amide-Based Phosphonium Ionic Liquids

“…Similar results have been observed in the case of the FSA-based unsubstituted phosphonium RTILs. 7 However, compared to the FSA-based unsubstituted phosphonium RTILs, the FSA-based benzylphosphonium RTILs showed lower transport property. For instance, P 222(Bz) -FSA shows higher viscosity and lower conductivity (191 mPa s and 1.3 mS cm -1 at 25 °C, respectively) than triethylpentylphosphonium FSA (P 2225 -FSA) as a comparative FSA-based unsubstituted phosphonium RTIL (viscosity and conductivity of P 2225 -FSA: 70 mPa s and 3.0 mS cm -1 at 25 °C, respectively).…”