Asahi Kasei Kabushiki Kaisha

Tekeshi Kamijo

Nobuhiro Okada

Kazuteru Umetsu

Tadashi Matsushita

Keita Kusuzaka

Atsushi Hosokibara

This nonaqueous lithium power storage element contains a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte that contains lithium ions. The positive electrode has a positive electrode current collector and a positive electrode active material layer disposed on one surface or both surfaces of the positive electrode current collector, and the positive electrode active material layer contains a positive electrode active material that contains a carbon material. When the pore distribution of the positive electrode active material layer is measured by mercury intrusion, the pore distribution curve for the relationship between the pore diameter and log differential pore volume has at least one peak having a peak value of 1.0-5.0 mL/g for the log differential pore volume in the pore diameter range of 0.1-50 &#x3bc;m, and the total cumulative pore volume Vp in the pore diameter range of 0.1-50 &#x3bc;m is 0.7-3.0 mL/g.

Growing community of inventors

Tokyo, Japan

Tekeshi Kamijo