Toyota Jidosha Kabushiki Kaisha

Jtekt Corporation

Takashi Kono

Atsushi Sugihara

Takashi Aisaka

Masao Igarashi

Tatsuya Hashimoto

Naoyuki Wada

Shuji Tsutsumi

Masanori Kitayoshi

Kiwamu Kobayashi

Yoshiaki Ebine

Tsubasa Matsuda

Yasuyuki Nakane

Yasuki Miura

Kenshu Maruta

A stainless steel substrate used for a fuel cell separator that is excellent in corrosion resistance is disclosed. The embodiments relate to a stainless steel substrate used for a fuel cell separator, comprising substantially no Nb, and comprising Ti.

Stainless steel substrate, fuel cell separator, and fuel cell

The present disclosure provides a stainless steel substrate used for a fuel cell separator that comprises Nb and is excellent in corrosion resistance. The embodiments relate to a stainless steel substrate used for a fuel cell separator, comprising Nb in a solid solution state, and comprising substantially no precipitate of a Nb-containing intermetallic compound.

Stainless steel substrate

Provided is a fuel cell stack including a plurality of stacked cells each having separators, in which the corrosion (dissolution) of the base material of each separator used for the end cell, which includes one or more cells located at the positive-side end of the fuel cell stack, can be prevented at low cost and without the productivity decreased. In the fuel cell stack including a plurality of stacked cells each having separators, the base material of each of the separators used for the end cell located at the positive-side end of the fuel cell stack and the base material of each of the separators used for the other cells are different metallic materials, and the base material (e.g., Ti) of each of the separators used for the end cell has higher corrosion resistance than the base material (e.g., SUS) of each of the separators used for the other cells.

Fuel cell stack

A metal separator for a fuel cell is disposed on each side of a membrane electrode assembly. The metal separator includes a base material containing Fe as a primary component and 10 mass % or more of Cr. The base material further contains at least any one of 0.1 to 15 mass % of Ta, 0.1 to 15 mass % of V, and 4 to 10 mass % of Sn.

Metal separator for fuel cell

In production of electrode paste, powder and solvent are separately injected into a hollow exterior component, the powder and the solvent are transferred to a downstream side in a transfer direction by rotation of two rotary shafts supported by the exterior component in a state where the rotary shafts are located parallel to each other at a predetermined interval, a mixture is produced by mixing the powder and the solvent by rotation of the rotary shafts without applying a shearing force, which is higher than or equal to a predetermined shearing force, to the powder, and producing electrode paste by kneading the mixture through application of a shearing force, which is higher than the shearing force that is applied in the mixing step, to the mixture through rotation of the rotary shafts.

Electrode paste production device and electrode paste production method

A method for producing a non-aqueous electrolyte secondary battery includes: subjecting a mixture of a negative-electrode active material on which oil has been adsorbed, CMC and water to hard kneading to prepare a primary kneaded mixture; diluting the primary kneaded mixture with water to prepare a slurry; and adding a binder to the slurry. The method further includes defining an amount of the oil to a value equal to or more than 50 ml/100 g and equal to or less than 62 ml/100 g, wherein the amount of the oil is an amount at the time when the viscosity characteristics of the negative-electrode active material exhibits 70% of the maximum torque that is generated when the oil is titrated onto the negative-electrode active material. The 1% aqueous solution viscosity of the CMC is defined to a value equal to or more than 6000 mPa&#xb7;s and equal to or less than 8000 mPa&#xb7;s.

Method for producing non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and method for producing negative electrode paste

An agitation apparatus () has a substantially cylindrically shaped agitation vessel (); a rotation shaft () provided along the central axis of the agitation vessel (); a substantially cylindrically shaped agitation member () having an outer diameter smaller than the inner diameter of the agitation vessel () and being fitted to the rotation shaft () so as to rotate concentrically with an inner circumferential surface of the agitation vessel (); and a plurality of through holes () formed through the agitation member () in radial directions of the agitation member. In the agitation apparatus (), a gap between the inner circumferential surface of the agitation vessel () and the outer circumferential surface of the agitation member () is partially varied along a vertical direction of the agitation member (). For example, the gap between the inner circumferential surface of the agitation vessel () and the outer circumferential surface of the agitation member () is wider at a lower portion (S) of the agitation member () than at an upper portion (S) of the agitation member ().

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Tajimi, Japan

Takashi Kono