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US 12,683,178 B2Granted
Separator for fuel cell with excellent corrosion resistance and conductivity and coating method therefor
AssigneesHyundai Motor Company, Kia Corporation
InventorsWoong Pyo Hong, Jung Yeon Park, Seung Jeong Oh
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Abstract
Disclosed are a separator for a fuel cell having excellent corrosion resistance and conductivity and a method of manufacturing the same. The separator includes a metal base material and a carbon coating layer formed on the surface of the metal base material, and the carbon coating layer includes carbon domains having a size in the range of about 15 to 30 nm.
Claims6
A separator for a fuel cell comprising:
- a metal base material;
- and
- a carbon coating layer disposed on a surface of the metal base material,
- wherein the carbon coating layer comprises a carbon domain having a size in the range of about 15 to 30 nm;
- wherein the separator further comprises a metal oxide film interposed between the metal base material and the carbon coating layer;
- and
- wherein the metal oxide film has a ratio of peak areas at 704 eV to 713 eV of about 0.1 to 0.2 in X-ray photoelectron spectroscopy (XPS) analysis, the ratio of peak areas represented by the Formula 1:
- AFe—O/(AFe—O+AFe) [Formula 1]
- where AFe—O is a peak area representing an Fe—O binding energy level in the XPS, and AFe is a peak area representing a Fe binding energy level in the XPS.
6 more elements
Dependencies are inferred from the claim text.