Bipolar plates for electrochemical cells
US8232026B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2010 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Oct 14, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In one embodiment, an electrochemical cell such as a fuel cell is provided to include a bipolar plate. The bipolar plate includes a metal substrate defining at least one flow channel having a channel span of no greater than 1.0 millimeter; and the metal substrate includes a stainless steel material less precious than stainless steel SS316L. In certain instances, the channel span is of 0.7 to 0.9 millimeters. In certain other instances, the flow channel has a channel depth of 0.3 to 0.5 millimeters. In yet other instances, the plate substrate includes stainless steel SS301, stainless steel SS302, or combinations thereof. In another embodiment, the electrochemical cell further includes a gas diffusion layer disposed next to the bipolar plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.