Nissan Motor Company Limited

Nippon Steel & Sumikin Chemical Co., Ltd.

Kabushiki Kaisha Toshiba

Ford Motor Company Limited

Daimler Ag

Nissan North America, Inc.

Tanaka Kikinzoku Kogyo K.k.

Toyo Tanso Co., Ltd.

Nippon Steel Chemical & Material Co., Ltd.

Ishifuku Metal Industry Co., Ltd.

Atsushi Ohma

Tetsuya Mashio

Hiroshi Iden

Shinji Yamamoto

Hiroyuki Tanaka

Yoshitaka Ono

Ken Akizuki

Shinichi Takahashi

Norifumi Horibe

Yoshihisa Furuya

Kazuki Arihara

Kazuyuki Satou

Kei Sakai

Kazuo Saito

Yasuhiro Numao

Koichi Matsutani

Maarten Sierhuis

Atsuo Sonai

Takahiro Morishita

Yasuji Ogami

Najamuddin Mirza Baig

Michio Hori

Kenichi Toyoshima

Sohei Suga

Yoshio Shodai

Takehiko Okui

Soichiro Shimotori

Yozo Okuyama

Atsushi Horai

Shigemasa Kuwata

Balachandran Gadaguntla Radhakrishnan

John W Lawson

Makoto Harada

Xin Yang

Yoshinori Suzue

Shreyas Honrao

Hideyuki Komatsu

Shunsuke Oki

Mohit Rakesh Mehta

Takehito Nishikawa

Hideo Inoue

An all-solid-state battery comprises a lithium anode, a cathode, solid electrolyte and a protective layer between the solid electrolyte and the lithium anode. The protective layer comprises an ion-conducting material having an electrochemical stability window against lithium of at least 1.0 V, a lowest electrochemical stability being 0.0 V and a highest electrochemical stability being greater than 1.0 V. More particularly, when the solid electrolyte is LiSiCON, the electrochemical stability window is at least 1.5 V, the lowest electrochemical stability is 0.0 V and the highest electrochemical stability is greater than 1.5 V. When the solid electrolyte is sulfide-based, the electrochemical stability window is at least 2.0 V, the lowest electrochemical stability is 0.0 V and the highest electrochemical stability is greater than 2.0 V.

Anode interlayer for lithium batteries

Provided is a catalyst having excellent gas transportability. Disclosed is a catalyst comprising a catalyst support and a catalyst metal supported on the catalyst support, wherein the catalyst includes pores having a radius of less than 1 nm and pores having a radius of 1 nm or more, wherein a pore volume of the pores having a radius of less than 1 nm is 0.3 cc/g support or more or a mode radius of a pore distribution of the pores having a radius of less than 1 nm is 0.3 nm or more and less than 1 nm, and wherein the catalyst metal is supported inside the pores having a radius of 1 nm or more.

Catalyst and electrode catalyst layer, membrane electrode assembly, and fuel cell using the catalyst

Provided are a carbon powder which can provide a catalyst exhibiting high performance and a catalyst. A carbon powder for fuel cell comprising carbon as a main component, which has a ratio (B/A) of an area B of peak 1 to an area A of peak 0 of more than 0 and 0.15 or less, wherein the area A represents an area of peak 0 at a position of 2&#x3b8;=22.5&#xb0; to 25&#xb0; as observed by XRD analysis when the carbon powder for fuel cell is subjected to heat treatment at 1800&#xb0; C. for 1 hour in an inert atmosphere, and the area B represents an area of peak 1 at a position of 2&#x3b8;=26&#xb0; as observed by XRD analysis when the carbon powder for fuel cell is subjected to heat treatment at 1800&#xb0; C. for 1 hour in an inert atmosphere.

Carbon powder for fuel cell and catalyst, electrode catalyst layer, membrane electrode assembly, and fuel cell using the carbon powder for fuel cell

[Object] Provided is a catalyst having a high catalytic activity. [Solving Means] Disclosed is a catalyst comprising a catalyst support and a catalyst metal supported on the catalyst support, wherein the catalyst support includes pores having a radius of less than 1 nm and pores having a radius of 1 nm or more, a surface area formed by the pores having a radius of less than 1 nm is equal to or larger than a surface area formed by the pores having a radius of 1 nm or more, and an average particle diameter of the catalyst metal is 2.8 nm or more.

Catalyst and manufacturing method thereof, and electrode catalyst layer using the catalyst

To provide a catalyst layer for a fuel cell, which exhibits excellent power generation performance even in the case of reducing the used amount of a catalyst. It is an electrode catalyst layer for a fuel cell comprising a catalyst, a porous carrier for supporting the above-mentioned catalyst, and a polymer electrolyte, in which a mode diameter of the pore distribution of the above-mentioned porous carrier is 4 to 20 nm, and the above-mentioned catalyst is supported in a pore with a pore diameter of 4 to 20 nm of the above-mentioned porous carrier.

Electrode catalyst layer for fuel cell

[Object] Provided is a catalyst having excellent gas transportability. [Solving Means] Disclosed is a catalyst comprising a catalyst support and a catalyst metal supported on the catalyst support, wherein the catalyst includes pores having a radius of less than 1 nm and pores having a radius of 1 nm or more, wherein a pore volume of the pores having a radius of less than 1 nm is 0.3 cc/g support or more or a mode radius of a pore distribution of the pores having a radius of less than 1 nm is 0.3 nm or more and less than 1 nm, and wherein the catalyst metal is supported inside the pores having a radius of 1 nm or more.

Provided is an electrode catalyst having enhanced catalytic activity (oxygen reduction reaction (ORR) specific activity). Disclosed is an electrode catalyst containing a catalyst metal particle(s) and a spacer(s) supported on a catalyst support, in which a ratio (d/d) of an average diameter of the spacer(s) (d) with respect to an average diameter of the catalyst metal particle(s) (d) is from 3.5 to 10.

Electrode catalyst, method for producing the same, and electrode catalyst layer using electrode catalyst

Provided is an electrode catalyst layer excellent in gas transportability by using an electrode catalyst layer for fuel cell comprising a catalyst containing a catalyst carrier and a catalytic metal carried on the catalyst carrier and an electrolyte, wherein the catalyst partially is coated with the electrolyte, and a specific surface area of the catalytic metal which gas can reach without passing through an electrolyte is 50% or more, with respect to the total specific surface area of the catalytic metal.

Electrode catalyst layer for fuel cell, method for producing the same, and membrane electrode assembly and fuel cell using the catalyst layer

The present invention relates to an electrode catalyst for fuel cell containing a catalyst carrier having carbon as a main component and a catalytic metal carried on the catalyst carrier, wherein the electrode catalyst for fuel cell has a ratio R' (D&#x2032;/G intensity ratio) of a peak intensity of D&#x2032; band (D&#x2032; intensity) measured in the vicinity of 1620 cmto a peak intensity of G band (G intensity) measured in the vicinity of 1580 cmby Raman spectroscopy of more than 0.6 and 0.8 or less, and satisfies at least one of the (a) to (d). According to the present invention, an electrode catalyst for fuel cell excellent in gas transportability is provided.

Electrode catalyst for fuel cell, electrode catalyst layer for fuel cell, method for producing the same, and membrane electrode assembly and fuel cell using the catalyst layer

The present invention is to provide a carbon powder that can provide a catalyst having excellent durability and a catalyst. A carbon powder for catalyst of the present invention is a carbon powder containing as a main component carbon, which has a BET specific surface area per unit weight of 900 m/g or greater, and a ratio R' (D&#x2032;/G intensity ratio) of peak intensity for a D&#x2032;-band (D&#x2032; intensity) measured in the vicinity of 1620 cmto peak intensity for a G-band (G intensity) measured in the vicinity of 1580 cmby Raman spectroscopy of 0.6 or less.

Carbon powder for catalyst, catalyst, electrode catalyst layer, membrane electrode assembly, and fuel cell using the carbon powder

The present invention has an object to provide a catalyst having excellent oxygen reduction reaction activity. The present invention relates to a catalyst comprising a catalyst support and a catalyst metal supported on the catalyst support, wherein a specific surface area of the catalyst per support weight is 715 m/g support or more or a covering ratio of the catalyst metal with an electrolyte is less than 0.5, and an amount of an acidic group of the catalyst per support weight is 0.75 mmol/g support or less.

A fuel cell electrode catalyst layer () of the preset invention includes: a catalyst (); a support () that supports the catalyst; and two or more proton-conductive materials () different in dry mass value per mole of a proton-donating group, the proton-conductive materials being in contact with at least a part of the catalyst and at least a part of the support. Then, a proton-conductive material in which a dry mass value per mole of the proton-donating group is highest among the proton-conductive materials is in contact with at least a part of the catalyst, and has a largest contact ratio with a surface of the catalyst.

Fuel cell electrode catalyst layer, fuel cell electrode, fuel cell membrane electrode assembly and fuel cell having a proton-conductive material coated on a catalyst thereof

Provided is an electrocatalyst for solid polymer fuel cells capable of increasing the active surface area for reactions in a catalyst component, increasing the utilization efficiency of the catalyst, and reducing the amount of expensive precious metal catalyst used. Also provided are a membrane electrode assembly that uses this electrocatalyst and a solid polymer fuel cell. An electrocatalyst for a solid polymer fuel cell is provided with a catalyst and solid proton conducting material. A liquid conductive material retention part that retains a liquid proton conducting material that connects the catalyst and solid proton conducting material is provided between the same. The surface area of the catalyst exposed within the liquid conductive material retention part is larger than the surface area of the catalyst in contact with the solid proton conducting material.

Electrocatalyst for solid polymer fuel cell

This electrode catalyst layer for fuel cells is provided with: an electrode catalyst that comprises a conductive carrier and platinum-containing metal particles supported on the surface of the conductive carrier; and an ionomer that covers the electrode catalyst. This electrode catalyst layer for fuel cells is characterized in that the average thickness of the ionomer is 2.4 nm or less. This electrode catalyst layer for fuel cells is capable of having a good balance between proton transport properties and transport properties for a gas such as an oxidant gas or a fuel gas even in cases where the amount of supported platinum is decreased. In addition, an electrode for fuel cells, a membrane electrode assembly for fuel cells, and a fuel cell, each having good current-voltage characteristics, can be obtained using the above-described electrode catalyst layer for fuel cells.

Electrode catalyst layer for fuel cells, electrode for fuel cells, membrane electrode assembly for fuel cells, and fuel cell

[Object] To provide a gas diffusion electrode capable of a high current density operation of a fuel cell. [Solving means] A gas diffusion electrode including a hydrophilic porous layer having an electrically conductive material and an ion conductive material; and a catalyst layer adjacent to the hydrophilic porous layer, wherein a water transport resistance of the hydrophilic porous layer is smaller than a water transport resistance of the catalyst layer.

Gas diffusion electrode and production method for same; membrane electrode assembly and production method for same

Growing community of inventors

Yokohama, Japan

Atsushi Ohma