McDermott Will & Emery LLP
Nonaqueous electrolyte for electrochemical devices
The present invention relates to a nonaqueous electrolyte for electrochemical devices, and to electric double-layer capacitor and secondary battery using the said nonaqueous electrolyte. The nonaqueous electrolyte according to the present invention comprises a room temperature molten salt and a fluorohydrocarbon. The nonaqueous electrolyte is flame resistant and can suppress the rise in its viscosity. Therefore, high quality electrochemical devices can be obtained by using the nonaqueous electrolyte. The electric double-layer capacitor according to the present invention comprises a pair of polarizable electrode plates, a separator interposed between the pair of electrode plates, and the inventive nonaqueous electrolyte. The secondary battery according to the present invention comprises a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte, wherein the nonaqueous electrolyte comprises the inventive nonaqueous electrolyte, and further comprises a lithium salt and a cyclic carbonate.
Panasonic Corporation
H Y H H H Y H H
H01M Y02E H01M H01G H01M Y02E H01G H01M
inventional additional additional inventional inventional additional inventional inventional
Hiroshi Tooru Masaki
Yoshizawa Matsui Deguchi