Electrode for nonaqueous electrolyte secondary battery showing small variability in battery properties and nonaqueous electrolyte secondary battery using the same

摘要

The present invention is directed to an electrode for a nonaqueous electrolyte secondary battery and a nonaqueous electrolyte secondary battery using the same. The nonaqueous electrolyte secondary battery electrode includes an electrode material mixture and a current collector. The electrode material mixture includes an active material and a polymer. The thickness change rate of the electrode material mixture is −3 to 10% when immersing in an electrolyte at 60° C. for 72 hours.