Non-aqueous solvent, non-aqueous electrolyte compositions, and non-aqueous electrolyte secondary battery
AssigneeSony Corporation
InventorYukifumi Takeda
Life of this patent
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Abstract
A non-aqueous solvent is provided that includes ethylene carbonate in a range from 5% or more to less than 60%, propylene carbonate of 40% or less, and diethyl carbonate of 40% or more, as mass ratios. The non-aqueous electrolyte compositions are formed by further adding an electrolytic salt and, if necessary, unsaturated cyclic carbonic ester and a high molecular compound into the non-aqueous solvent. A non-aqueous electrolyte secondary battery is formed by using the non-aqueous electrolyte compositions.
Claims15
A non-aqueous solvent comprising:
- ethylene carbonate having a mass ratio ranging from 5% or more to less than 60%;
- propylene carbonate having a mass ratio of 40% or less;
- and
- diethyl carbonate having a mass ratio of 40% or more.
A non-aqueous electrolyte compositions comprising:
- an electrolytic salt;
- and
- a non-aqueous solvent containing ethylene carbonate having a mass ratio ranging from 5% or more to less than 60%, propylene carbonate having a mass ratio of 40% or less, and diethyl carbonate having a mass ratio of 40% or more as a mass ratio, respectively.
A non-aqueous electrolyte secondary battery comprising:
- a cathode containing cathode active material and an anode containing anode active material, each active material capable of doping and dedoping lithium ions;
- a non-aqueous electrolyte composition;
- a separator;
- and
- a sheathing member enclosing the cathode, the anode, the non-aqueous electrolyte compositions, and the separator,
- wherein the non-aqueous electrolyte composition includes
- an electrolytic salt and
- a non-aqueous solvent including ethylene carbonate having a mass ratio ranging from 5% or more to less than 60%, propylene carbonate having a mass ratio of 40% or less, and diethyl carbonate having a mass ratio of 40%.
Dependencies are inferred from the claim text.