Abstract
We describe the assembly and characterisation of a reference electrode for use in supercritical difluoromethane (R32). The reference electrode is constructed from a europium doped lanthanum fluoride crystal contacted by silver loaded epoxy and encased in a silicate epoxy. The reference electrode can withstand pressures and temperatures up to at least 20MPa and 360K, typical operating condition for electrochemistry in supercritical difluoromethane (scR32). The performance of the new reference electrode is compared to that of a platinum pseudo reference electrode in scR32. The redox potential of the decamethylferrocene couple in scR32 containing 20mM [NBun4][BF4] at ∼17.6MPa and 359K was 0.088±0.015V against the new silver contacted lanthanum fluoride crystal based reference electrode.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
