SIZE AA LITHIUM PRIMARY BATTERY AND SIZE AAA LITHIUM PRIMARY BATTERY

摘要

Disclosed is a size AA lithium primary battery which comprises an electrode group (4) that is obtained by winding up a positive electrode (1), which contains iron disulfide as a positive electrode active material, and a negative electrode (2), which contains lithium as a negative electrode active material, with a separator (3) interposed therebetween. The mass of a portion facing the positive electrode (1) in the negative electrode (2) is within the range of 0.86-1.1 g; the cumulative pore volume of pores having a pore diameter within the range of 0.1-10 μm in the separator (3) is 0.25 ml/g or less; and the separator (3) has a Gurley number of 100-1,000 sec/100 ml.