Process for the formation of pores in a polymer matrix
US8372322B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2009 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Jan 18, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249978
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process for the formation of pores of controlled shape, dimensions and distribution in a polymer matrix comprising a step of embedding silicon nanowires and/or nanotrees in a nonpolymerized polymer matrix or a nonpolymerized polymer matrix in suspension or in solution in at least one solvent, a step of curing the polymer matrix, and a step of removing the silicon nanowires and/or nanotrees by chemical treatment. The process of the invention can be used for the manufacture of a proton exchange membrane fuel cell active layer. The invention has applications in the field of manufacture of proton exchange membrane fuel cells, in particular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.