Non-aqueous organic electrolytic solution for lithium primary battery, and lithium primary battery
There is provided non-aqueous organic electrolytic solution for a lithium primary battery which can be stored for long period at elevated temperatures or at the end stage of discharge. Non-aqueous organic electrolytic solution 20 for lithium primary battery 1 having a cathode active material which is manganese dioxide and an anode active material which is either of lithium or lithium alloy includes a base electrolytic solution that is composed of organic solvent and supporting electrolyte and to which either one of hydroxyphthalimide or hydroxyphthalimide derivative is added as an additive. An amount of the additive which is added to the base electrolytic solution is 0.1 wt % or more and 5.0 wt % or less. It is more preferable that the amount of the additive which is added to the base electrolytic solution is 0.1 wt % or more and 1.0 wt % or less.
1. A lithium primary battery, comprising:
a positive electrode which contains manganese dioxide as a cathode active material;
a negative electrode
which is composed of either lithium or lithium alloy, and
which has a surface area smaller than that of the positive electrode,
the lithium and lithium alloy serving as an anode active material;
a base electrolytic solution
that is composed of organic solvent and electrolyte; and
an additive which contains either one of hydroxyphthalimide and hydroxyphthalimide derivative
the additive of 0.1 wt % or more and 5.0 wt % or less is added to the base electrolytic solution.
2. A lithium primary battery according to claim 1 , wherein
the additive of 0.1 wt % or more and 1.0 wt % or less is added to the base electrolytic solution.