The state of Kentucky produces 95% of the world’s bourbon, and all that bourbon leaves behind an enormous amount of waste grain, called stillage. Now, researchers at the University of Kentucky have developed a process to transform that stillage into electrodes. With the bourbon byproduct electrodes, they created supercapacitors that could store more nergy than similarly sized commercial devices. The researchers will present their results at the spring meeting of the American Chemical Society (ACS Spring 2026), held in Atlanta from March 22 to 26.
Turning bourbon stillage into carbon
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