JP2000208169A5 - - Google Patents

Claims (11)

  Non-aqueous electrolysis in an electrode assembly in which a negative electrode and a positive electrode capable of inserting and extracting lithium are opposed to each other through a separator, and a non-aqueous electrolyte secondary battery in which a non-aqueous electrolyte is contained in a container The liquid is formed by dissolving a lithium salt in a non-aqueous solvent including vinylene carbonate containing an organic halide as a part thereof, and the positive electrode current collector and a portion electrically connected to the positive electrode current collector are non-aqueous. A secondary battery characterized in that a portion in contact with the electrolyte is made of a valve metal or an alloy thereof.   The secondary battery according to claim 1, wherein the content of vinylene carbonate in the non-aqueous solvent is 0.1 to 30% by weight.   The secondary battery according to claim 1 or 2, wherein the vinylene carbonate contains a halogenated alkylene carbonate, and the content thereof is 1 ppm or more and 50 wt% or less.   4. The secondary battery according to claim 1, wherein the vinylene carbonate contains at least chloroethylene carbonate as the halogenated alkylene carbonate.   The non-aqueous solvent contains at least one carbonate selected from the group consisting of alkylene carbonates and dialkyl carbonates, and the total amount of vinylene carbonate including the carbonate and the organic halide is 70% by weight of the non-aqueous solvent. The secondary battery according to any one of claims 1 to 4, wherein the secondary battery occupies% or more.   6. The secondary battery according to claim 1, wherein the valve metal or an alloy thereof is aluminum or an aluminum alloy.   The secondary battery according to any one of claims 1 to 6, wherein the negative electrode uses a carbon material capable of inserting and extracting lithium as an active material.   The secondary battery according to any one of claims 1 to 7, wherein the positive electrode comprises a lithium transition metal composite oxide capable of inserting and extracting lithium as an active material. Inorganic acid lithium salt selected from the group consisting of LiClO ₄ , LiPF ₆ , LiBF ₄ and LiSbF ₆ , or LiCF ₃ SO ₃ , LiN (CF ₃ SO ₂ ) ₂ , LiN (C ₂ F ₅ SO ₂ ) _{2 9.} An organic acid lithium salt selected from the group consisting of LiN (CF ₃ SO ₂ ) (C ₄ F ₉ SO ₂ ) and LiC (CF ₃ SO ₂ ) _3. A secondary battery according to any one of the above. The container of the part which contacts a non-aqueous electrolyte among the parts electrically connected with the said positive electrode electrical power collector is aluminum or aluminum alloy, The Claim 1 thru | or 9 characterized by the above-mentioned. Secondary battery. The non-aqueous electrolyte used for the secondary battery in any one of Claims 1 thru | or 10.