newastrums
Joined: 04 Aug 2014
Posts: 5
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 Posted: Fri Sep 05, 2014 3:42 am Post subject: Spray-on batteries |
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Spray-on batteries
Researchers at Rice University in Houston have developed a prototype spray-on battery that could allow engineers to rethink the way portable electronics are designed.The rechargeable battery boasts similar electrical characteristics to the lithium ion batteries that power almost every mobile gadget, but it can be applied in layers to almost any surface with a conventional airbrush, said Neelam Singh, a Rice University graduate student who led a team working on the technology for more than a year.Current lithium ion batteries are almost all variations on the same basic form: an inflexible block with electrodes at one end. Because they cannot easily be shaped, they sometimes restrict designers, particularly when it comes to small gadgets with curved surfaces, but the Rice prototypes could change that. "Today, we only have a few form factors of batteries, but this battery can be fabricated to fill the space available," said Singh.The battery is sprayed on in five layers: two current collectors sandwich a cathode, a polymer separator and an anode. The result is a battery that can be sprayed on to plastics, metal and ceramics.The researchers are hoping to attract interest from electronics companies, which Singh estimates could put it into production relatively easily. "Airburshing technology is well-established. At an industrial level it could be done very fast," she said.
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