Eight million tonnes of cigarette butts are tossed onto streets and into bins worldwide each year. Most decompose glacially slowly, leaching toxins as they go. But what if this ubiquitous waste could power your phone? Researchers in China have transformed discarded cigarette filters into carbon supercapacitors with performance that rivals commercial activated carbon. The trick ... Read more The post The Cigarette Butt Supercapacitor appeared first on SciChi.