Nissan Motor Company Limited

Renault S.a.s.

Hirofumi Yasuda

Katsuo Suga

Masanori Nakamura

Hironori Wakamatsu

Kazuyuki Shiratori

Toru Sekiba

Makoto Aoyama

Toshiharu Miyamura

Jun Ikezawa

Junji Ito

Yasunari Hanaki

Hiroshi Miyakubo

Hiroto Kikuchi

Yosuke Suzuki

Naoko Nishimura

Hideaki Morisaka

Kazuyuki Sakamoto

Kenji Uesugi

Kosuke Hagiyama

Azusa Matsuo

Shigeru Chida

Tomohisa Matsuno

Shinnichi Tasaki

Masanori Nakamaura

A non-aqueous electrolyte secondary battery is capable of suppressing a local reaction of a negative electrode active material due to the electrolyte during charging and discharging and improving a capacity retention ratio of a using a carbon material such as artificial graphite particles for the negative electrode active material. The non-aqueous electrolyte secondary battery includes a negative electrode containing a carbon-based negative electrode active material, an electrolyte layer, and a positive electrode containing a positive electrode active material, and having a tap density of the negative electrode active material of 0.96 g/cc or more.

Non-aqueous electrolyte secondary battery

The present invention provides a non-aqueous electrolyte composition with excellent high-temperature stability and a non-aqueous electrolyte secondary battery using the same. The non-aqueous electrolyte composition includes a supporting electrolyte, an organic solvent, and at least one kind of chemical compound (a) selected from the group consisting of a chemical compound (a1) indicated by the following general formula (1) and a chemical compound (a2) indicated by the following general formula (2). 

Non-aqueous electrolyte composition and non-aqueous electrolyte secondary battery

An object is to maintain an effect of enhancing activity of noble metal particles by transition metal without increasing production cost and an environmental load. An exhaust gas purifying catalystis composed of: noble metal particles; first compoundswhich contact the noble metal particlesand suppress movement of the noble metal particles; and second compoundswhich contain the noble metal particlesand the first compounds, suppress the movement of the noble metal particles, and suppress coagulation of the first compoundsfollowing mutual contact of the first compounds, wherein the first compoundssupport the noble metal particles, and simplexes or aggregates of the first compoundssupporting the noble metal particlesare included in section partitioned by the second compounds

Exhaust gas purifying catalyst and production method thereof

A purifying catalyst includes catalyst powder composed of a transition metal oxide of which an average particle diameter is within 1 nm to 2 &#x3bc;m and in which an electron binding energy of oxygen is shifted to an energy side lower than 531.3 eV. The purifying catalyst shows good purification performance even when noble metal is not contained as an essential component.

Purifying catalyst

A catalysthas a heat-resistant supportselected from among AlO, SiO, ZrO, and TiO, and a first metalsupported on an outer surface of the support, and included by an inclusion materialcontaining a component of the support

Catalyst, exhaust gas purifying catalyst, and method of producing the catalyst

An exhaust gas purifying catalyst including: a plurality of first compoundswhich have precious metal particlessupported thereon and are formed into a particle shape; and second compoundswhich are arranged among the plurality of first compoundsand separate the first compoundsfrom one another, wherein pore volumes of the precious metal particles, the first compoundsand the second compoundsare 0.24 to 0.8 cm/g.

A catalyst producing method comprises preparing reverse micellar solution including an aqueous solution containing at least a noble metal element as a catalytic active component, and carrying the catalytic active component by a substrate to establish them into a catalyst precursor; and spraying the emulsion solution containing the catalyst precursor in an inert gas atmosphere to obtain a dried catalyst precursor, and firing the obtained dried catalyst precursor in an air atmosphere. A catalyst is obtained by the catalyst producing method.

Catalyst and producing method thereof

A method of producing catalyst powder of the present invention has a step of precipitating a transition metal particle and a base-metal compound in a reversed micelle substantially simultaneously, and a step of precipitating a noble metal particle in the reversed micelle. By this method, it is possible to obtain catalyst powder which restricts an aggregation of noble metal particles even at the high temperature and is excellent in the catalytic activity.

Catalyst powder, exhaust gas purifying catalyst, and method of producing the catalyst powder

A method of producing catalyst powder of the present invention has a step of precipitating a carrier in a reversed micelle, and a step of precipitating at least one of a noble metal particle and a transition metal particle in the reversed micelle in which the carrier is precipitated. By this method, it is possible to obtain catalyst powder excellent in heat resistance and high in the catalytic activity.

Catalyst powder, method of producing the catalyst powder, and exhaust gas purifying catalyst

A catalyst which suppresses aggregation of metal particles and which has superior heat resistance. In the catalyst, metal particles are supported by a surface of a carrier while being partially embedded therein.

Catalyst, exhaust gas purification catalyst, and method for manufacturing same

A method of producing catalyst powder of the present invention has a step of precipitating any one of a noble metal particle () and a transition metal particle () in a reversed micelle (); a step of precipitating, in the reversed micelle () in which any one of the noble metal particle () and the transition metal particle () is precipitated, a porous support material () which supports the noble metal particle () and the transition metal particle (); and a step of precipitating the other of the noble metal particle () and the transition metal particle () in the reversed micelle () in which any one of the noble metal particle ().

A method of producing catalyst powder of the present invention has a step of precipitating a noble metal particle () and a porous carrier () in a reversed micelle substantially simultaneously; and a step of precipitating a transition metal particle () in the reversed micelle. By this method, it is possible to obtain catalyst powder which restricts an aggregation of the noble metal particles even at a high temperature and is excellent in a catalytic activity.

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Yokosuka, Japan

Hirofumi Yasuda