According to foreign media Etnews, under the efforts of Korean researchers, UNIST's research team developed the world's first flexible battery.
The battery is stretched while maintaining its original performance, safe and reliable, and can be widely used in wearable devices.
The current collector of the battery of the wearable device is a mixture of a highly conductive substance and a polymer having good tensile properties.
However, when these batteries are stretched, the connection of the conductive material is broken and the conductivity is lowered. The elastic battery just compensates for this shortcoming, it uses a composite material that is stretched to maintain its electrical conductivity, and uses the composite material as a current collector of the electrode.
So popularly speaking, the elastic battery is a lithium-ion battery that is developed safely and stretchable.
The team made new polymer composites by mimicking the structure of "Jabuticaba", which is known as the Brazilian grape.
The battery is composed of a polymer composite composed of carbon nanotubes and carbon black. When the novel polymer composite is stretched, the carbon black is connected to the broken portion of the carbon nanotube to maintain its original conductivity.
More importantly, lithium-ion batteries made from this composite and water-based electrolyte are more reliable than current batteries. When these batteries are stretched, the probability of danger is very low.
There is no doubt that flexible batteries have a wide range of applications in folding equipment and wearables, but they don't know if they will be as difficult to produce as graphene batteries.
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