We will develop electrocatalytic methods to enable a Net-Zero circular plastics economy. The work will use renewable electricity to up-cycle the most polluting plastics: polyethylene and polypropylene. Realizing this vision requires insight into the fundamental phenomena which steer alkane adsorption, reaction, and desorption processes at electrode surfaces. The Packard Fellowship will enable these pioneering research efforts and open the door to a new chapter in sustainable catalytic reactivity.