Electrolytic solution for non-aqueous type battery and non-aqueous type secondary battery
OwnerShoichiro Watanabe, Shusaku Goto +4inventors
InventorsShoichiro Watanabe, Shusaku Goto, Masaru Takagi, Sumihito Ishida, Toshikazu Hamamoto, Akira Ueki
Life of this patent
Estimating the term…
Abstract
In a rechargeable non-aqueous electrolyte secondary battery using positive electrodes, negative electrodes and a non-aqueous electrolytic solution, additives to the electrolytic solution are used in combination, preferably in combination of at least two compounds selected from o-terphenyl, triphenylene, cyclohexylbenzene and biphenyl, and thus there are provided batteries excellent in safety and storage characteristics.
Claims32
A non-aqueous electrolytic solution for non-aqueous type batteries in which an electrolyte is dissolved in a non-aqueous solvent, characterized by containing two or more organic compounds differing in oxidative polymerization potential, with a proviso that weight of the organic compound of relatively lower oxidative polymerization potential is less than that of the organic compound of relatively higher oxidative polymerization potential.
An electrolytic solution for non-aqueous type batteries having a positive electrode comprising a material containing a lithium-containing metal oxide as a positive electrode active material and a negative electrode comprising a material containing graphite as a negative electrode active material, characterized in that the non-aqueous electrolytic solution contains a non-aqueous solvent mainly composed of a cyclic carbonate and a chain carbonate in which a lithium salt is dissolved as a solute, and further contains two or more organic compounds differing in oxidative polymerization potential, with a proviso that weight of the organic compound of relatively lower oxidative polymerization potential is less than that of the organic compound of relatively higher oxidative polymerization potential.
A non-aqueous type secondary battery containing a non-aqueous electrolytic solution in which an electrolyte is dissolved in a non-aqueous solvent, characterized in that two or more organic compounds differing in oxidative polymerization potential are further contained in the non-aqueous electrolytic solution, with a proviso that weight of the organic compound of relatively lower oxidative polymerization potential is less than that of the organic compound of relatively higher oxidative polymerization potential.
A non-aqueous type secondary battery having a positive electrode comprising a material containing a lithium-containing metal oxide as a positive electrode active material, a negative electrode comprising a material containing graphite as a negative electrode active material and a non-aqueous electrolytic solution, characterized in that the non-aqueous electrolytic solution contains a non-aqueous solvent mainly composed of a cyclic carbonate and a chain carbonate in which a lithium salt is dissolved as a solute, and further contains two or more organic compounds differing in oxidative polymerization potential, with a proviso that weight of the organic compound of relatively lower oxidative polymerization potential is less than that of the organic compound of relatively higher oxidative polymerization potential.
Dependencies are inferred from the claim text.