Multi-block sulfonated poly(phenylene) copolymer proton exchange membranes
US8110636B1 · kind B1 · utility
22Cited by
10References
21Claims
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Key dates
| Filing date | Apr 17, 2009 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Jul 21, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Improved multi-block sulfonated poly(phenylene) copolymer compositions, methods of making the same, and their use as proton exchange membranes (PEM) in hydrogen fuel cells, direct methanol fuel cells, in electrode casting solutions and electrodes. The multi-block architecture has defined, controllable hydrophobic and hydrophilic segments. These improved membranes have better ion transport (proton conductivity) and water swelling properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.