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US 2019/0058201 A1Published application
Separator for fuel cell and coating method thereof
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsBokyung KIM, Yoo Chang YANG, Woong Pyo HONG, Seungkoo LEE, Jungyeon PARK, Su Jung NOH, Seung Jeong OH, Daeil YOON, In Woong LYO, Kyungmin KIM
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Abstract
A separator for a fuel cell includes: a metal base material; and a carbon coating layer formed on one surface or both surfaces of the metal base material, in which roughness Ra formed at an interface between the metal base material and the carbon coating layer may be in a range of 20 to 78 nm.
Claims15
A separator for a fuel cell, comprising:
- a metal base material;
- and
- a carbon coating layer formed on one surface or both surfaces of the metal base material,
- wherein roughness Ra formed at an interface between the metal base material and the carbon coating layer is in a range of 20 to 78 nm.
1 more element
A manufacturing method of a separator for a fuel cell, comprising:
- loading a metal base material into a chamber;
- introducing a mixed gas containing a reactive gas and an inert gas into the chamber and etching a surface of the metal base material by applying an ion gun;
- and
- forming a carbon coating layer on the surface of the metal base material by introducing a carbon precursor gas into the chamber and converting it into a plasma state,
- wherein in the etching of the surface of the metal base material, the mixed gas includes 25 to 50 vol % of the inert gas and 50 to 75 vol % of the reactive gas.
2 more elements
Dependencies are inferred from the claim text.