Metal-free　carbon　materials　are　currently　of　considerable　interest　to　researchers　because　they　have　a　proven　ability　to　catalyze　many　electrochemical　processes.　Making　such　materials　with　an　abundant　amount　of　nanopores　and　large　specific　surface　area,　and　thereby　a　large　density　of　accessible　electrochemically　active　sites,　can　enhance　their　catalytic　activities.　To　this　end,　herein　we　report　three-dimensional　(3D)　nanoporous　metal-free　carbon　nanospheres　(　Copyright　©　2020　American　Chemical　Society.