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AssigneesNisshin Steel Co., Ltd., Toyota Jidosha Kabushiki Kaisha
InventorsYasushi Fukui, Masanori Matsuno, Minoru Saito
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A separator for a low-temperature fuel cell comprises a stainless steel substrate S having a surface to which carbonaceous particles such as graphite particles GP or carbon black aggregates CA adhere with dotted distribution. The carbonaceous particles are preferably bonded through a diffusion layer DL to the surface of the substrate S. The carbonaceous particle-dispersed layer may be a plating layer in which graphite particles GP or carbon black aggregates CA are dispersed or formed by thermal decomposition of organic components in a carbonaceous particle-dispersed paint applied to the surface of the substrate S. Since carbonaceous particles free from oxide films adhere to the surface of the acid-resistant stainless steel substrate S, contact resistance of the separator is sufficiently low. Consequently, a power generator having a plurality of fuel cells laminated together exhibits high power-generating efficiency with less heat loss caused by a Joule heat.
A separator for a low-temperature fuel cell comprising a metal sheet substrate, on which an oxide film is generated in a corrosive atmosphere to keep acid resistance, and carbonaceous particles applied onto a surface of said metal sheet substrate.
A separator for a low-temperature fuel cell comprising a metal sheet substrate, on which an oxide film is generated in a corrosive atmosphere to keep acid resistance, and carbonaceous particles applied onto a surface of said metal sheet substrate, wherein the carbonaceous particles are bonded through a diffusion layer to the surface of the substrate.
A method of manufacturing a separator for a low-temperature fuel cell, comprising steps of:
A separator for a low-temperature fuel cell comprising a metal sheet substrate, on which an oxide film is generated in a corrosive atmosphere to keep acid resistance, and carbonaceous particles applied onto a surface of said metal sheet substrate, wherein the metal sheet substrate is a stainless steel substrate, and the carbonaceous particles are applied with dotted distribution onto the surface of said stainless steel substrate, and wherein the carbonaceous particles are bonded through a diffusion layer to the surface of the substrate.
A separator for a low-temperature fuel cell comprising a metal sheet substrate, on which an oxide film is generated in a corrosive atmosphere to keep acid resistance, and carbonaceous particles applied onto a surface of said metal sheet substrate, wherein the metal sheet substrate is a stainless steel substrate, and the carbonaceous particles are applied with dotted distribution onto the surface of said stainless steel substrate by pressing the carbonaceous particles onto the surface of the stainless steel substrate by rolling said stainless steel substrate at a reduction ratio of approximately 0.1-50%, and wherein the carbonaceous particles are bonded through a diffusion layer to the surface of the substrate.
Dependencies are inferred from the claim text.