Honda Motor Co., Ltd.

Kazuki Saimen

Takashi Nakagawa

Yuki Ito

Takeshi Fujino

Hidefumi Nikawa

Yuji Isogai

Toshio Tokune

Hayato Takahashi

Akihisa Tanaka

Ryogo Sakamoto

Takuya Nishinuma

Takahiro Komori

Yuka Nagatochi

Provided is a positive electrode including: a positive electrode current collector; and a positive electrode material mixture layer including a positive electrode active material and dielectric particles, the dielectric particles including ionically-conductive particles and non-ionically-conductive particles. Also provided is an electricity storage device including: the positive electrode; a negative electrode; and an electrolytic solution.

Positive electrode and electricity storage device

To provide a porous dielectric particle capable of achieving a lithium ion secondary battery having a high volumetric energy density, a high output, and being scarcely deteriorated in the output property even after charge and discharge are repeated, an electrode for a lithium ion secondary battery including the porous dielectric particle, and a lithium ion secondary battery using the electrode for a lithium ion secondary battery. A porous dielectric oxide is used, and this is dispersed and disposed in gaps between active material particles of an electrode. Specifically, as a particle to be blended in an electrode of a lithium ion secondary battery including an electrolytic solution, porous dielectric particles in which at least a part of a surface of porous core particles is coated with dielectric oxide is used.

Porous dielectric particle, electrode for lithium ion secondary battery, and lithium ion secondary battery

Provided are an electrode for a lithium ion secondary battery, and a lithium ion secondary battery, in which a reduction in the permeability of an electrolyte solution and an increase in resistance even when the density of the electrode is increased, can be suppressed. In the electrode for a lithium ion secondary battery, a layer in which the diffusion rate of an electrolyte solution is greater than in an active material layer is disposed between a current collector and an active material layer. Specifically, the electrode for a lithium ion secondary battery includes a current collector, and an electrode active material layer containing an electrode active material, the electrode active material layer being formed on at least one side of the current collector, in which an electroconductive layer containing solid electrolyte particles and electroconductive particles is disposed between the current collector and the electrode active material layer.

Electrode for lithium ion secondary battery, and lithium ion secondary battery

Provided is a non-aqueous electrolyte secondary battery capable of reliably operating an electricity shut-off mechanism at overcharging without deteriorating battery performance. The non-aqueous electrolyte secondary battery () includes, in a container (): a positive electrode (); in-container positive electrode terminals () and (); a negative electrode (); in-container negative electrode terminals () and (); a non-aqueous electrolyte solution; and an electricity shut-off mechanism () capable of shutting off energization with the outside of the container when the internal pressure of the container rises. A solid electrolyte layer that produces gas allowing the electricity shut-off mechanism () to be operated is included in at least one member of a positive electrode mixture layer unformed portion (), a negative electrode mixture layer unformed portion (), the in-container positive electrode terminals () and (), and the in-container negative electrode terminals () and ().

Non-aqueous electrolyte secondary battery

Provided is an electrode for a secondary cell capable of obtaining excellent output values and input values when used in the secondary cell. The electrode for a secondary cell is formed of an electrode mixture layer molded body formed of an active material and at least one of a carbon nanotube and a three-dimensional carbon nanotube fiber bundle skeleton formed of a plurality of carbon nanotubes that intersect one another to form an aggregation, which are in intimate contact with the surface of the active material; and a current collector layered on the electrode mixture layer molded body. The electrode mixture layer molded body includes a first roughened surface, and the current collector includes a second roughened surface. The first roughened surface of the electrode mixture layer molded body and the second roughened surface of the current collector are pressed and attached to each other.

Electrode for secondary cell

There are provided an electrolyte-positive electrode structure which comprises a thin solid electrolyte and can develop excellent capacity and output, and a lithium ion secondary battery comprising the same. An electrolyte-positive electrode structurecomprises: a positive electrodecomprising a positive electrode active material layerformed on a current collector; and a solid electrolytecontaining inorganic particles having lithium ion conductivity, an organic polymer, and a polymer gel, in which the organic polymer binds the inorganic particles and can be impregnated with the polymer gel, and the polymer gel holds an electrolyte solution and is impregnated into the organic polymer, wherein the positive electrode active material layeris integrated with the solid electrolyteusing the organic polymer as a medium.

Electrolyte-positive electrode structure, and lithium ion secondary battery comprising the same

Provided is a lithium ion conductive composite electrolyte that can prevent leakage of electrolyte solution, and that have excellent cycle performance and lithium ion conductivity, and a lithium ion secondary battery. A lithium ion conductive composite electrolyteis formed so that a lithium ion conductive polymer gel electrolyte is held in a porous bodyformed from lithium ion conductive inorganic solid electrolyte particles and an organic polymer. The lithium ion conductive inorganic solid electrolyte particles are formed from a composite metal oxide that has a garnet structure, and is represented by the chemical formula LiLaAZrMO(wherein 0&#x2266;x&#x2266;3, 0&#x2266;y &#x2266;2, A is one of Y, Nd, Sm, and Gd, and M is Nb or Ta). A lithium ion secondary batteryincludes the lithium ion conductive composite electrolytebetween a positive electrodeand a negative electrode

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Saitama, Japan

Kazuki Saimen