Alternative Sustainable Supercapacitors for IoT devices By 2025, an estimated 27 billion IoT devices will be connected to the internet, requiring power sources such as batteries. As a consequence, around 80 million batteries from IoT devices are projected to be discarded daily that year. A significant proportion of these batteries pose risks to both humans and the environment due to their harmful materials. That is why we have developed a more sustainable supercapacitor for the IoT market, where the technology cooperates with nature and does not involve difficult-to-handle battery scrap.