Recently, researchers at the University of Tokyo have developed a soft, printable metal-free electrode that could revolutionize the way we power electronic devices. This new electrode, made of an extremely conductive polymer, is incredibly light and flexible. It has the potential to be applied to a wide range of devices, from wearable electronics to medical implants. In addition, it is highly durable and can be printed using a variety of methods. This new technology could enable us to create more efficient and cost-effective power sources for a variety of applications.

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source: Phys.org