Highly accessible, nanotube electrodes for large surface area contact applications
US7704479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2007 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Sep 12, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24603
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An highly porous electrically conducting film that includes a plurality of carbon nanotubes, nanowires or a combination of both. The highly porous electrically conducting film exhibits an electrical resistivity of less than 0.1 O·cm at 25 C and a density of between 0.05 and 0.70 g/cm3. The film can exhibit a density between 0.50 and 0.85 g/cm3 and an electrical resistivity of less than 6×10−3 O·cm at 25 C. Also included is a method of forming these highly porous electrically conducting films by forming a composite film using carbon nanotubes or nanowires and sacrificial nanoparticles or microparticles. At least a portion of the nanoparticles or microparticles are then removed from the composite film to form the highly porous electrically conducting film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.