ELECTRODE PLATE FOR SECONDARY LITHIUM ION BATTERY AND SECONDARY LITHIUM ION BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a more reliable secondary lithium ion battery wherein the rapid rise of the battery temperature by short-circuit current is controlled when the battery is crushed or a foreign material with a sharp tip sticks in the battery; to provide an electrode plate for a lithium secondary battery achieving the problem.

SOLUTION: Since a conducting agent included in the electrode plate contains a carbon material satisfying the following formula, a safe and reliable lithium secondary battery and an electrode plate for a lithium secondary battery achieving the lithium secondary battery can be obtained. ρ1≥2.5×ρ2(ρ1is the volume resistivity of the carbon material at -20 to 60 °C, ρ2 is the volume resistivity of the material at 180 °C).

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