Sumitomo Electric Industries, Limited

Sumitomo Wiring Systems, Limited

Autonetworks Technologies, Limited

Nippon Soda Co., Ltd.

Koma Numata

Masatoshi Majima

Koji Nitta

Shoichiro Sakai

Atsushi Fukunaga

Mitsuyasu Ogawa

Shinji Inazawa

Takahiro Higashino

Eiko Imazaki

Kazuki Okuno

Chihiro Hiraiwa

Hiromasa Tawarayama

Eiko Itani

Hiroki Hirai

Makoto Higashikozono

Tetsuji Tanaka

Junichi Ono

Naho Mizuhara

Tomoyuki Awazu

Keiichiro Tanabe

Toshiaki Yamashita

Ryoko Kanda

Hideaki Ito

Hitoshi Kobayashi

Shinichi Maruyama

A metal porous sheet includes a metal porous body having a skeleton with a three-dimensional network structure, and has a main surface in which a trench is formed. A depth of the trench is more than or equal to 10 percent of a thickness of the metal porous sheet. An area of the trench is more than or equal to 10 percent of an area of the main surface in a plan view.

Metal porous sheet, fuel cell, and water electrolysis device

A fuel cell includes: a cell structure body including a cathode, an anode, and a solid electrolyte layer interposed between the cathode and the anode; and a current collector in contact with the cathode, wherein an oxidant is supplied to the cathode through the current collector, the current collector includes a porous body made of a metal material, and a chromium adsorbent carried inside pores of the porous body, the metal material includes a first metal and a second metal, the first metal includes nickel, and the second metal includes at least one selected from the group made of tin, aluminum, cobalt, titanium, manganese, tungsten, copper, silver, and gold.

Fuel cell

Provided is a chromium adsorption material including: a porous body made of a metal material; and a chromium adsorbent carried inside pores of the porous body, wherein the metal material includes a first metal and a second metal, the first metal includes nickel, and the second metal includes at least one selected from the group consisting of tin, aluminum, cobalt, titanium, manganese, tungsten, copper, silver, and gold.

Chromium adsorption material and fuel cell

The metal porous body having a framework of a three-dimensional network structure is disclosed. The framework is formed of a metal film, the framework has an interior that is hollow, and the metal film contains titanium metal or titanium alloy as a main component.

Metal porous body and method for producing metal porous body

A porous body includes a framework having a three-dimensional network structure, the framework having a body including crystal grains including nickel and cobalt as constituent elements, the cobalt having a proportion in mass of 0.2 or more and 0.8 or less with respect to a total mass of the nickel and the cobalt, the crystal grains having a shorter grain diameter of 2 &#x3bc;m or more, as determined in a first observed image obtained by observing the body of the framework in cross section at a magnification of 200 times.

Porous body and fuel cell including the same

A coolant includes a refrigerant, a porous plate-shaped heat insulator, and an enclosure in which the refrigerant and the heat insulator are enclosed in a sealed state, and the heat insulator has a thermal conductivity per unit area of 300 W/(K&#xb7;m) or less and a thickness equal to or greater than 0.5 mm and equal to or less than 10.0 mm.

Coolant and power storage pack using same

A porous body with a framework having an integrally continuous, three-dimensional network structure, the framework comprising an outer shell and a core including one or both of a hollow or a conductive material, the outer shell including nickel and cobalt, the cobalt having a ratio in mass of 0.2 or more and 0.4 or less or 0.6 or more and 0.8 or less relative to the total mass of the nickel and the cobalt.

Porous body, current collector including the same, and fuel cell

Provided is a method for producing a negative electrode for an electric storage device, the method comprising the steps of preparing a negative electrode composition comprising a negative electrode active material that reversibly carries a sodium ion, metal sodium, and a liquid dispersion medium for dispersing them; allowing a negative electrode current collector to hold the negative electrode composition; evaporating at least part of the liquid dispersion medium from the negative electrode composition held by the negative electrode current collector, thereby giving a negative electrode precursor comprising the negative electrode active material, the metal sodium, and the negative electrode current collector; and bringing the negative electrode precursor into contact with an electrolyte having sodium ion conductivity, thereby doping the negative electrode active material with sodium eluted from the metal sodium.

Negative electrode composition for electric storage device, negative electrode including the composition, electric storage device, and method for producing negative electrode for electric storage device

A heat resistant battery includes a positive electrode including a positive electrode current collector and a positive electrode active material fixed on the positive electrode current collector, wherein the positive electrode active material includes a sodium-containing transition metal compound capable of electrochemically storing and releasing a sodium ion; a negative electrode including a negative electrode current collector and a negative electrode active material fixed on the negative electrode current collector, wherein the negative electrode active material contains at least one selected from the group consisting of a sodium-containing titanium compound and a non-graphitizable carbon, each of the sodium-containing titanium compound and the non-graphitizable carbon capable of storing and releasing a sodium ion at a lower potential than a potential of the sodium-containing transition metal compound; and a sodium ion-conductive electrolyte provided at least between the positive electrode and the negative electrode, wherein the sodium ion-conductive electrolyte includes a salt of an organic cation having a pyrrolidinium skeleton and a bis(perfluoroalkyl sulfonyl)imide anion.

Heat resistant battery and method for charging and discharging the same

An aspect of the present invention relates to a negative electrode for a sodium molten salt battery, the negative electrode including a negative electrode current collector and a negative electrode mixture layer arranged on a surface of the negative electrode current collector, the negative electrode mixture layer including negative electrode active material particles and a film arranged on a surface of each of the negative electrode active material particles, the negative electrode active material particles containing hard carbon, and the film containing a sodium-containing sulfide.

Negative electrode for sodium molten salt battery, method for producing same, and sodium molten salt battery

Provided is an electrode for a sodium molten-salt battery in which degradation of the electrode can be suppressed even when charging and discharging are repeated, and which has excellent cycle characteristics. The electrode for a sodium molten-salt battery includes a current collector and an electrode mixture adhering to a surface of the current collector, in which the electrode mixture includes an electrode active material and a binder containing a polymer, and the polymer does not contain a fluorine atom. The polymer can include, for example, at least one selected from the group consisting of polyamide resins and polyimide resins or at least one selected from the group consisting of acrylic resins, rubber-like polymers, and cellulose derivatives.

Electrode for sodium molten-salt battery and sodium molten-salt battery

Provided is a sodium molten-salt battery having good charge-discharge cycle characteristics. The sodium molten-salt battery includes a positive electrode that contains a positive electrode active material, a negative electrode that contains a negative electrode active material, and a molten-salt electrolyte that contains a sodium salt and an ionic liquid that dissolves the sodium salt. The negative electrode active material contains non-graphitizable carbon. The ionic liquid is a salt of a bis(sulfonyl)imide anion and a first onium cation that does not cause a Faradaic reaction with the non-graphitizable carbon. The molten-salt electrolyte contains a second onium cation in an amount of 1,000 ppm by mass or less. The second onium cation is represented by a general formula (1): RRRRNwhere Rto Rare each independently a hydrogen atom or a methyl group.

Sodium molten salt battery

Provided is a power supply system capable of being used in a well over a long period of time. A power supply system for a well according to the present invention includes a secondary battery having an operating temperature range including a temperature of the inside of a well and supplying power to a device installed in the well; and a charge-discharge mechanism for charging and discharging the secondary battery, and is installed in the well. The secondary battery to be used in the power supply system may be a molten salt battery, and may include a sensor and communication apparatus.

Growing community of inventors

Osaka, Japan

Koma Numata