Nonaqueous electrolyte primary battery and method for producing same
A nonaqueous electrolyte primary battery with improved storage properties at high temperatures and excellent reliability, and a method for producing the battery are provided. The nonaqueous electrolyte primary battery includes a negative electrode containing metallic lithium or a lithium alloy, a positive electrode, a separator, and a nonaqueous electrolyte solution. The nonaqueous electrolyte solution contains at least LiClO 4 as an electrolyte and 0.1 to 5% by mass of LiB(C 2 O 4 ) 2 .
1. A nonaqueous electrolyte primary battery comprising:
a negative electrode containing metallic lithium or a lithium alloy;
a positive electrode;
a separator; and
a nonaqueous electrolyte solution,
wherein the nonaqueous electrolyte solution contains at least LiClO 4 as an electrolyte and 0.1 to 5% by mass of LiB(C 2 O 4 ) 2 ,
a content of LiClO 4 in the nonaqueous electrolyte solution is 0.3 to 0.8 mol/l, and
a proportion of LiB(C 2 O 4 ) 2 in a total amount of LiClO 4 and LiB(C 2 O 4 ) 2 in the nonaqueous electrolyte solution is 3 to 25 mol %.
2. The nonaqueous electrolyte primary battery according to claim 1 , wherein a proportion of LiB(C 2 O 4 ) 2 in a total amount of LiClO 4 and LiB(C 2 O 4 ) 2 in the nonaqueous electrolyte solution is 5 to 20 mol %.
3. The nonaqueous electrolyte primary battery according to claim 1 , wherein the negative electrode contains a lithium layer and the lithium alloy formed on the surface of the lithium layer.
4. The nonaqueous electrolyte primary battery according to claim 1 , wherein the nonaqueous electrolyte solution contains propylene carbonate and ether at a volume ratio of 30:70 to 70:30 as a solvent of the nonaqueous electrolyte solution.
5. The nonaqueous electrolyte primary battery according to claim 1 , wherein, the positive electrode contains manganese dioxide.
6. A method for producing a nonaqueous electrolyte primary battery comprising:
placing a negative electrode containing metallic lithium or a lithium alloy, a positive electrode, a separator, and a nonaqueous electrolyte solution inside an outer package,
wherein the nonaqueous electrolyte solution contains at least LiClO 4 as an electrolyte and 0.1 to 5% by mass of LiB(C 2 O 4 ) 2 ,
a content of LiClO 4 in the nonaqueous electrolyte solution is 0.3 to 0.8 mol/l, and
a proportion of LiB(C 2 O 4 ) 2 in a total amount of LiClO 4 and LiB(C 2 O 4 ) 2 in the nonaqueous electrolyte solution is 3 to 25 mol %.
7. The method according to claim 6 , wherein a proportion of LiB(C 2 O 4 ) 2 in a total amount of LiClO 4 and LiB(C 2 O 4 ) 2 in the nonaqueous electrolyte solution is 5 to 20 mol %.
8. The method according to claim 6 , wherein the negative electrode is formed by bringing a laminated body into contact with the nonaqueous electrolyte solution, the laminated body having a lithium layer and a layer that contains an alloying element for forming a lithium alloy and that is directly disposed on the surface of the lithium layer.