Who knew your trash bin could power the future? Scientists are MacGyver-ing everyday junk like plastic water bottles, eggs, hemp, and even cement into supercapacitors—those zippy energy-storers that charge faster than batteries but haven’t gone mainstream yet due to lithium-ion’s dominance. From shredding bottles into electrodes to grinding eggshells for flexible devices, or mixing cement with carbon for ion-holding magic, these quirky experiments promise eco-friendly, cheap alternatives. But despite impressive lab results like hemp holding charge after thousands of cycles, real-world adoption lags because, let’s face it, who’d trust their phone to an egg-powered gadget?
4 Weird Things You Can Turn into a Supercapacitor
