Asahi Kasei Kabushiki Kaisha

Yuima Kimura

Nobuhiro Okada

Kazuteru Umetsu

Yuichiro Hirakawa

Hitoshi Morita

Yusuke Yamahata

Osamu Saito

Kensuke Niimura

Koichi Hiraoka

Tadashi Matsushita

Takeshi Kamijo

Sumire Jinno

Yuji Asano

Ryosuke Baba

Hidefumi Takami

Kazuaki Takada

Fumiya Nakamura

Ryusuke Okoshi

A non-aqueous lithium power storage element that includes a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, the positive electrode having a positive electrode collector and a positive electrode active material layer that includes active carbon, and the non-aqueous lithium power storage element having configuration (1) and/or (2). (1) The negative electrode includes a negative electrode collector and a negative electrode active material layer (2) The non-aqueous electrolyte contains (A) LiPFand/or LiBF, (B) an imide lithium salt, and (C) an oxalate-complex lithium salt, the ratio of the mass of component (C) to the total mass of components (A) and (B) being 1.0-10.0 mass %.

Non-aqueous lithium power storage element

An object of the present disclosure is to provide a doping method in which the status of the progress of a main reaction can be estimated in the lithium carbonate decomposition-type doping step of a nonaqueous lithium power storage element. The separation method, the doping method, and the doping apparatus according to the present disclosure include calculating a capacitor current density iand an electrode reaction current density ibased on voltage and current of a cell that are measured during doping of the cell.

Current separation method, doping method, and doping apparatus of nonaqueous lithium power storage element

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

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.

A non-aqueous lithium-type power storage element obtained by a non-aqueous liquid electrolyte and an electrode laminate having a negative electrode body, a positive electrode body, and a separator being accommodated in an exterior body, wherein: the negative electrode body includes a negative electrode current collector and a negative electrode active material including a carbon material capable of occluding and releasing lithium ions.

A non-aqueous lithium-type power storage element comprising an electrode laminate body and a non-aqueous electrolyte being housed in an external body, the electrode laminate body having a negative electrode body, a positive electrode body and a separator.

Non-aqueous lithium-type power storage element

This lithium ion capacitor results from housing an electrode laminate body, which comprises a positive electrode, a negative electrode, and a separator, and a non-aqueous electrolyte, which contains a lithium-ion-containing electrolyte, in an external body, wherein the negative electrode has a negative electrode current collector and a negative electrode active material layer containing a negative electrode active material that can occlude and release lithium ions on one or both surfaces of the negative electrode current collector, and the following (i) to (iii) are all satisfied: (i) the negative electrode active material is a carbon composite material containing carbon black and a carbonaceous material; (ii) the negative electrode is doped with lithium ion at between 1,050 mAh/g and 2,500 mAh/g, inclusive, per unit mass of the negative electrode active material; and (iii) the thickness of the negative electrode active material layer is between 10 &#x3bc;m and 60 &#x3bc;m, inclusive, per side.

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Tokyo, Japan

Yuima Kimura