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Hydrogel electronics makes it debut

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Geplaatst op 28 juni 2012 - 14:52

Hydrogel electronics makes it debut

A new type of hydrogel could make for high-performance energy-storage electrodes and biosensors. So say researchers at Stanford University in the US who have used the conducting polymer polyaniline (PAni) to develop a porous nanostructured material that they say has excellent electronic and electrochemical properties.
Geplaatste afbeelding
The PAni hydrogel
"Our material combines the advantages of hydrogels (which have a large surface area) and organic conductors, with their high electronic conductivity and good electrochemical properties," team members Lijia Pan and Guihua Yu explain. "It could thus be used in high-performance electrochemical devices such as supercapacitors and ultrasensitive biosensors, like those used to detect glucose, for example."
Hydrogels are 3D polymer networks that can hold a large amount of water and have a structure similar to that of biological tissue. Most hydrogels are based on non-conducting polymer matrices, however, which limits their applications in electronics. The researchers, led by Zhenan Bao and Yi Cui, have now used phytic acid, which is a good ionic conductor, to dope and crosslink the PAni in an effort to overcome this shortcoming.


Lees verder: http://physicsworld....makes-its-debut

Bron: Physicsworld, IOP

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