Scientists ‘frying’ grafeenoxide Battery material




Scientists are trying to develop materials for batteries by grafeenoxide as a spray to ‘fry’. In this way, are relatively easy “to create 3D grafeen’-spheres, which can be used as a material for electrodes.

Scientists use sound waves to convert a suspension with flakes of grafeenoxide in microdroplets. The droplets then spraying them in an organic solution at a temperature of 160 ° C, a method that they compare with frying.

When frying the water evaporates the flakes and clumping together. “The rapid evaporation causes we believe that the grafeenlaagjes get a radially outward arrangement,” said Sang-Hoon Park Korean Yonsei University in Seoul. The dots look like microscopic pompoms. The advantage of this design is that there is a large grafeenoppervlak, wherein nano channels can provide a greater charge transfer.

nozzle graphene frying

The researchers used grafeenbolletjes to make electrodes with dimensions of 1 x 1cm. The capacity of this was similar to that of electrodes on the basis of 3D-graphene which was obtained in other ways. Advantage of the method of the investigators, however, is that it is simple and can be easily scaled up for industrial applications, cites Chemical & Engineering News a Korean scientist.

It has been known that graphene due to its electrical properties can be used for electrodes. Graphene is composed of a single layer of carbon atoms in an arrangement that is similar to chicken wire. 3D structures of graphene due to their larger surface area would have better properties for use as electrode material. The increased surface area means more space for electrons at the interface, a better exchange of electrons and a larger battery capacity.

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