Separator for fuel cell and method of manufacturing separator for fuel cell
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKohei SAKURAI, Shigemitsu NOMOTO, Tohru ODA
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Abstract
A separator for a fuel cell includes: a metallic base material; a titanium-based layer stacked in a stacking direction with respect to the base material; and a carbon layer stacked on an opposite side to the base material with respect to the titanium-based layer in the stacking direction. The titanium-based layer includes a titanium metal layer. The carbon layer includes: a first carbon layer; and a second carbon layer stacked on the opposite side to the base material with respect to the first carbon layer in the stacking direction. The second carbon layer contains at least one type from a hydrogen element, a nitrogen element, and an oxygen element as a minor element.
Claims5
A separator for a fuel cell comprising:
- a metallic base material;
- a titanium-based layer stacked in a stacking direction with respect to the base material;
- and
- a carbon layer stacked on an opposite side to the base material with respect to the titanium-based layer in the stacking direction, wherein
- the titanium-based layer includes a titanium metal layer, and
- the carbon layer includes:
- a first carbon layer;
- and
- a second carbon layer stacked on the opposite side to the base material with respect to the first carbon layer in the stacking direction, the second carbon layer containing at least one type from a hydrogen element, a nitrogen element, and an oxygen element as a minor element.
A method of manufacturing a separator for a fuel cell, comprising:
- a preparatory step of preparing a stack including a metallic base material, a titanium-based layer, and a first carbon layer, the titanium-based layer being stacked in a stacking direction with respect to the base material and including a titanium metal layer, the first carbon layer being stacked on an opposite side to the base material with respect to the titanium-based layer in the stacking direction;
- and
- a forming step of forming a second carbon layer on the opposite side to the base material with respect to the first carbon layer in the stacking direction by ion plating using a vapor deposition source containing a carbon element, the second carbon layer containing at least one type from a hydrogen element, a nitrogen element, and an oxygen element as a minor element, wherein
- in the forming step, at least one type from the hydrogen element, the nitrogen element, and the oxygen element is provided in at least one of the vapor deposition source and an atmosphere for ionizing the vapor deposition source.
Dependencies are inferred from the claim text.