The future of wearable devices: laser-induced graphene supercapacitors
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Researchers at Rice University last year announced that they were able to develop a method for manufacturing graphene using computer-controlled lasers. Graphene produced in this way is called LIG (laser-induced graphene) laser-induced graphene. Rice University researchers recently announced that this material may be a suitable alternative to batteries for wearable electronic devices.
One of the attributes of LIG is that LIG is much easier to produce than graphene made by chemical vapor deposition. The team used a polyimide plastic film and a computer-controlled laser to produce LIG. In addition to carbon, the laser burned everything in the upper polyimide film. The remaining material is a form of graphene.
Rice's research team believes that the new LIG manufacturing method can eventually be applied to roll-to-roll systems for the manufacture of graphene, eliminating the need to limit the complex manufacturing of micro-supercapacitors. condition.
The team stated that the LIG's micro-ultracapacitors and thin-film lithium batteries have the same energy density. This micro-super capacitor has a capacitance of 934 microfarads per square centimeter and an energy density of 3.2 milliwatts per cubic centimeter. Another feature is that micro-ultracapacitors do not degrade over time.
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