Compressed Gas Solvent Based Electrolytes for Electrochemical Energy Storage Devices
[Thesis]
Rustomji, Cyrus Sam
2015
2015
The use of fluorinated compressed gas solvent based electrolytes for electrochemical energy storage devices is explored. These solvents have the potential to offer batteries and electrochemical double-layer capacitors significantly improved properties including higher voltage, higher power and wider operating temperature range. A thorough study of the conductivity and potential window behavior of a number of electrolytes has been done as well as exploration into the chemical reduction of these solvents. Using these data, both battery and electrochemical double-layer capacitor devices were fabricated. The devices show exceptional behavior down to -70 °C with equal or improved energy densities. These results warrant a much wider exploration of the use of these solvents in next generation electrochemical energy storage devices