| 摘要 |
PURPOSE:To improve change/dischange characteristic of a lithium secondary battery by containing a high molecular compound containing a compound of specific chemical formula as a repeated unit, in a positive pole active material and a carbonaceous material, having a graphite structure, in a negative pole active material, of the secondary battery. CONSTITUTION:In a secondary battery, its positive pole active material contains a high molecular compound of containing a compound shown in the chemical formula as a repeating unit, and negative pole active material contains a carbonaceous material having a graphite structure. The formula represents a bivalent connection group by X1, X'1, alkylene group by R1, R'1 and ester derivative, ether derivative and sulfone derivative by R2. A hydrogen atom, alkyl group, aryl group, ester derivative, ether derivative and sulfone derivative are represented by R3, and a hydrogen atom and alkyl group are represented by R4. In the formula, alphabets (a, b, c) are 0 or 1, and Y represents -NR4-, -O-, -S-, -Te-, -Se-. In this way, charge/discharge characterisitc of the lithium secondary battery is improved. |
