Fuel cell separator and coating method of seperator for fuel cell separator

Patent metadata

Field	Value
Publication number	US-10329665-B2
Application number	US-201615379296-A
Country	US
Kind code	B2
Filing date	Dec 14, 2016
Priority date	Oct 24, 2016
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

A fuel cell separator includes a metal substrate having a surface; an ion penetration layer including carbon diffusion-inhibiting ions extending from the surface of the metal substrate into the metal substrate; and a carbon coating layer disposed on the surface of the metal substrate.

First claim

What is claimed is:

1. A fuel cell separator, comprising
a metal substrate having a surface;
an ion penetration layer including carbon diffusion-inhibiting ions extending from the surface of the metal substrate into the metal substrate; and
a carbon coating layer disposed on the surface of the metal substrate;
wherein the ion penetration layer includes from 5 wt % to 30 wt % of the carbon diffusion-inhibiting ion and from 5 wt % to 85 wt % of carbon.

2. The fuel cell separator of claim 1 , wherein the carbon diffusion-inhibiting ions of the ion penetration layer are interposed between metal atoms in the metal substrate.

3. The fuel cell separator of claim 1 , wherein the carbon diffusion-inhibiting ion is a nitrogen ion or a boron ion.

4. The fuel cell separator of claim 1 , wherein the ion penetration layer has a thickness of from about 30 nm to about 300 nm.

5. The fuel cell separator of claim 1 , wherein the carbon coating layer has a thickness of from 10 nm to 1000 nm.

6. The fuel cell separator of claim 1 , wherein the carbon coating layer has a density of from 2.0 g/cm 3 to 3.0 g/cm 3 .

Assignees

• Hyundai Motor Co Ltd
• Dongwoo Hst Co Ltd

Inventors

• Lee Seungkoo
• Hong Woong Pyo
• Kim Bokyung
• PARK Jungyeon
• Oh Seung Jeong
• Lyo In Woong
• Noh Su Jung
• Lee Jun Seok
• Chung Won Ki
• Ahn Seung Gyun

Classifications

• C23C8/36 Primary

  using ionised gases, e.g. ionitriding · CPC title

• C23C16/0263

  Irradiation with laser or particle beam · CPC title

• H01M8/0228 Primary

  in the form of layered or coated products · CPC title

• C23C16/50

  using electric discharges {(generation and control of plasma in discharge tubes for surface treatment H01J37/32, H01J37/34)} · CPC title

• C23C16/26 Primary

  Deposition of carbon only · CPC title