Non-aqueous electrolytic solution secondary battery

摘要

The present invention provides a non-aqueous electrolytic solution secondary battery which can obtain stable power regardless of a depth of discharge and which can detect residual capacity easily. Graphite particles G having a predetermined particle diameter and petroleum pitch are mixed with and sintered at approximately 1000 DEG C in the atmosphere of inert gas, then cracked and sieved out to obtain binding particles C having a desired particle diameter which the graphite particles G are bound with an amorphous carbon A. A winding group is formed by winding a negative electrode in which the obtained binding particles C is used as negative electrode active material and a positive electrode which lithium manganate is used as positive electrode active material through a separator. An apparent density is increased by the amorphous carbon C bound among the graphite particles G.