Matsushita Electric Industrial Co., Ltd.

Nippon Shokubai Kagaku Kogyo Co., Ltd.

Matushita Electric Industrial Co., Ltd.

Hiromu Matsuda

Yoshinori Toyoguchi

Nobuyoshi Taguchi

Akihiro Imai

Keiichi Yubakami

Munehisa Ikoma

Tetsuji Kawakami

Shinji Hamada

Kazuhiro Ohta

Yukihiro Okada

Nobuyasu Morishita

Yasuhiko Bito

Toshitada Sato

Shuji Ito

Hideharu Takezawa

Yasushi Nakagiri

Masaya Ugaji

Kazuya Iwamoto

Isao Matsumoto

Osamu Yamamoto

Shinji Mino

Katsunori Komori

Hiroshi Higuchi

Manabu Kakino

Kanji Takata

Shinichi Shimakawa

Akinori Yokota

Kazuyoshi Honda

Hiroshi Inoue

Yoichiro Tsuji

Teruhisa Kanbara

Yoshinori Sano

Tadao Kimura

Hajime Yamamoto

Sadayuki Okazaki

Tadashi Sotomura

Yuji Takashima

Kiyoshi Hayashi

Tetsuo Nanno

Hitoshi Sakai

Hiromi Kajiya

Yasuyuki Shibano

Toshihide Murata

Yoriko Takai

Yohei Hattori

Norikatsu Akutsu

Junichi Inaba

Yoshinori Yamada

Kazuhiro Ota

Sigeru Tanimori

Kimie Muramatsu

Hiroshi Yamasaki

To provide an electrochemical device with a layer structure causing no deterioration of characteristics of materials, in the method for preparing an electrochemical device comprising a first current collector, a first electrode active material layer, a solid electrolyte layer, a second electrode active material layer and a second current collector, all of which are accumulated, the first electrode active material layer, the second electrode active material layer or the solid electrolyte layer is formed by supplying atoms, ions or clusters constituting the first electrode active material layer, the second electrode active material layer or the solid electrolyte layer to the substrate, while irradiating electrons or electromagnetic waves with energy prescribed according to the composition of the first electrode active material layer, the second electrode active material layer or the solid electrolyte layer.

Method for preparing electrochemical device with a layer structure

A secondary battery comprising: a substrate; a first current collector; a first electrode; a solid electrolyte; a second electrode; and a second current collector; the first current collector being formed on the substrate and serving as a current collector of the first electrode, the first electrode being formed on the first current collector, the solid electrolyte being formed on the first electrode, the second electrode being formed on the solid electrolyte, the second current collector being formed on the second electrode and serving as a current collector of the second electrode, at least one electrode selected from the group consisting of the first electrode and the second electrode containing at least one material selected from the group consisting of an ion conductive material and an electron conductive material.

Secondary battery

In a non-aqueous electrolyte secondary battery, the reaction between the non-aqueous electrolyte and the electrode is suppressed to reduce a decrease in the discharge capacity with the charge/discharge cycle progress and the deterioration of battery characteristics during high-temperature storage. At least one of a chargeable and dischargeable positive electrode, a non-aqueous electrolyte containing a lithium salt, and a chargeable and dischargeable negative electrode in a non-aqueous electrolyte secondary battery contains at least one selected from the group consisting of a phosphate having three aliphatic hydrocarbon groups having 7 to 12 carbon atoms, a phosphate having two aliphatic hydrocarbon groups having 1 to 12 carbon atoms or an aromatic hydrocarbon group, and a phosphate having an aliphatic hydrocarbon group having 1 to 12 carbon atoms or an aromatic hydrocarbon group.

Non-aqueous electrolyte secondary battery and method for manufacturing the same

In order to obtain a non-aqueous electrolyte secondary battery having a high capacity and excellent charge/discharge cycle characteristics, a halogen-containing organic magnesium compound represented by the formula (1): RMgX, where R is an aliphatic hydrocarbon group or an aromatic hydrocarbon group, X is fluorine atom, chlorine atom, bromine atom or iodine atom; or the formula (2): RMgY, where R is an aliphatic hydrocarbon group or an aromatic hydrocarbon group, Y is &mdash;ClO , &mdash;BF , &mdash;PF or &mdash;CF SO is added to the non-aqueous electrolyte.

Non-aqueous electrolyte secondary battery with an organic magnesium electrolyte compound

An alkaline storage battery, a positive electrode material for the alkaline storage battery, and a method of preparation for the positive electrode material are disclosed. The positive electrode material is made up of nickel hydroxide particles that have cobalt oxyhydroxide on their surface. The particles may be prepared by a process in which &agr;-cobalt hydroxide adhered to the surface of the nickel hydroxide particles is oxidized to cobalt oxyhydroxide. The battery has a superior rate of utilization of active material, cycle life, and discharge characteristics.

Alkaline storage battery

The present invention provides a positive electrode, which contains at least one organic sulfide compound selected from the group consisting of a thiolato compound and a thiol compound, and at least one selected from the group consisting of sulfur and a lithium sulfide represented by Formula (1): (Li S) , where 0<x&lE;2 and n>0, a method of manufacturing the positive electrode, and a lithium battery using the positive electrode. Compared with the prior art lithium battery, the lithium battery using the positive electrode of the present invention has a greater capacity and a higher voltage. The positive electrode of the present invention effectively suppresses escape of the positive electrode active material from the positive electrode during charge and discharge operations and thus actualizes a secondary battery of high energy density having a less decrease in service capacity.

Positive electrode and lithium battery using the same

Disclosed is a nickel positive electrode for alkaline storage batteries with superb utilization of nickel hydroxide in an atmosphere from room temperature to high temperature. The positive electrode comprises a nickel hydroxide particle or a nickel hydroxide particle with one or more elements other than Ni incorporated therein, a coating layer which comprises a compound of cobalt having a mean valence over 2 and which coats the nickel hydroxide particle, and a compound of at least one element selected from the group consisting of Ca, Sr, Ba, Cu, Ag, Cd, Y, Yb, Ce, Sm, Gd and Er.

Nickel positive electrode for alkaline storage batteries

The purpose of the present invention is to provide a negative electrode for non-aqueous electrolyte rechargeable batteries of which the capacity is high and of which the decrease of the discharging capacity through the cycles is low by improving the electron conductivity of the surfaces of the active material particle for the negative electrode. In order to achieve this purpose, an active material in the form of a composite particle comprising,a phase that can store a lithium ion and includes at least Sn and a phase that cannot store a lithium ion and an electronically conductive material coating part of or the entire surfaces of the above described particle, is used for the negative electrode in the present invention.

Negative electrode for non-aqueous electrolyte rechargeable batteries

A solid solution represented by the formula (1): Li M M is used as a negative electrode active material for a non-aqueous electrolyte secondary battery comprising a chargeable and dischargeable positive electrode, a non-aqueous electrolyte and a chargeable and dischargeable negative electrode. In the formula (1), M represents at least one element selected from the group consisting of Ti, Zr, Mn, Co, Ni, Cu and Fe, and M represents at least one element selected from the group consisting of Si and Sn, and 0&lE;x<10, 0.1&lE;y&lE;10 and z&equals;1.

Non-aqueous electrolyte secondary battery

Disclosed is an active material for a hydrogen storage alloy electrode which can provide a nickel-metal hydride storage battery having a longer cycle life than any conventional battery. The active material has a core alloy of a hydrogen storage alloy and a surface layer comprising iron compound formed on the surface of the core alloy.

Active material for hydrogen storage alloy electrode and method for producing the same

Disclosed is a negative electrode active material offering a long life non-aqueous electrolyte secondary battery with high energy density that shows excellent cycle life characteristics. The negative electrode active material comprises a compound represented by the formula DSnO wherein D represents at least one selected from the group consisting of alkaline earth metals.

A hydrogen storage alloy electrode having a high capacity and excellent cycle characteristics is provided. The electrode is made from particulate active material comprising a hydrogen storage alloy of body-centered cubic crystal structure or body-centered tetragonal crystal structure, said hydrogen storage alloy being represented by the general formula Ti,M,Cr,M,L,, wherein M,is at least one element selected from the group consisting of Nb and Mo; M,is at least one element selected from the group consisting of Mn, Fe, Co, Cu, V, Zn, Zr, Ag, Hf, Ta, W, Al, Si, C, N, P and B; L is at least one element selected from the group consisting of rare-earth elements and Y; 0.2&lE;a&lE;0.7; 0.01&lE;b&lE;0.4; 0.1&lE;c&lE;0.7; 0&lE;d&lE;0.3; 0&lE;e&lE;0.03; and a&plus;b&plus;c&plus;d&plus;e&equals;1.0, and said particulate active material having a Ti&mdash;Ni system alloy phase in the surface portion thereof.

Hydrogen storage alloy electrode and method for manufacturing the same

Method for producing nickel positive electrode for alkaline storage batteries

The disclosure is a non-aqueous electrolyte secondary battery of high energy density and long life exhibiting an excellent charge and discharge cycle life. The battery comprises a rechargeable positive electrode, a rechargeable negative electrode, and a non-aqueous electrolyte, the negative electrode including a compound represented by the formula Li,MX,, where X represents at least one selected from the group consisting of fluorine, chlorine, bromine and iodine and M represents at least one selected from the group consisting of Sn, Si, Ge, Pb, Bi, P, B, Ga, In, Al, As, Sb, Zn, Ir, Mg, Ca, Sr, and Ba and where 0&lE;&kgr;<10 and 2<&agr;<12.

Growing community of inventors

Hyogo, Japan

Hiromu Matsuda