Asahi Kasei Kabushiki Kaisha

Hitoshi Morita

Kazuteru Umetsu

Nobuhiro Okada

Yuima Kimura

Yuichiro Hirakawa

Yusuke Yamahata

Takeshi Kamijo

Keita Kusuzaka

Koichi Hiraoka

Provided herein is a method for producing a non-aqueous alkali metal electricity storage element, comprising a voltage application step of applying a voltage to a non-aqueous alkali metal electricity storage element precursor comprising a positive electrode precursor, a negative electrode, a separator, and a non-aqueous electrolytic solution, housed in a casing, wherein a positive electrode active material layer of the positive electrode precursor comprises a positive electrode active material and an alkali metal compound other than the positive electrode active material.

Method for producing non-aqueous alkali metal electricity storage element

Provided is a non-aqueous lithium-type electricity storage element which includes a positive electrode current collector having a positive electrode active material layer disposed thereon, wherein, in a solid-stateLi-NMR spectrum of the positive electrode active material layer, a signal area ratio a/b, which is the ratio of a signal area ratio of component A having a signal at least at &#x2212;2 to 2.5 ppm to a signal area of component B having a signal at &#x2212;6 to &#x2212;2.5 ppm is 1.5 to 20.0.

Non-aqueous lithium-type electricity storage element

A nonaqueous lithium-type power storage element comprising a positive electrode, a negative electrode, a separator, and a nonaqueous electrolytic solution containing lithium ions. The negative electrode has: a negative electrode collector; and a negative electrode active material layer containing a negative electrode active material, said negative electrode active material layer being provided on one surface or both surfaces of the negative electrode collector. The negative electrode active material contains a carbonaceous material capable of storing or releasing lithium ions. Furthermore, the positive electrode has: a positive electrode collector; and a positive electrode active material layer containing a cathode active material, said positive electrode active material layer being provided on one surface or both surfaces of the positive electrode collector. The positive electrode active material contains activated carbon. Also, the positive electrode active material layer contains one or more compounds selected from formulas (1) to (3) in an amount of 1.60&#xd7;10to 300&#xd7;10mol/g per unit mass of the positive electrode active material layer. LiX&#x2014;ORO&#x2014;XLi (1) LiX&#x2014;ORO&#x2014;XR(2) RX&#x2014;ORO&#x2014;XR(3) (In the formulas, RR, RX, and Xrepresent groups defined in the specification of the application.)

Nonaqueous lithium-type power storage element

A lithium ion secondary battery of the present disclosure is provided with a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte containing lithium ions.

Lithium ion secondary battery

Provided is a nonaqueous lithium-type power storage element in which a lithium compound is included in positive electrode, wherein energy loss due to voltage decrease under high temperatures and high voltages is reduced, and the high-load charge and discharge cycle characteristics are exceptional.

The disclosure provides a nonaqueous lithium-type power storage element having a positive electrode, a negative electrode, a separator, and a nonaqueous electrolytic solution containing lithium ions.

Growing community of inventors

Tokyo, Japan

Hitoshi Morita