Reversible shunts for overcharge protection in polymer electrolyte membrane fuel cells
US11515555B2 · kind B2 · utility
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25Claims
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Key dates
| Filing date | May 6, 2020 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Jun 9, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Described herein is a polymer-electrolyte-membrane fuel cell (PEMFC) that incorporates a shunt into the membrane separator that becomes electronically conductive around a well-defined anodic onset potential, thereby preventing excessive anodic potentials at the positive electrode that would otherwise drive deleterious parasitic reactions such as catalyst dissolution or catalyst and carbon oxidation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.