Suppressing Water Electrolysis via Pb Single Atoms in Nitrogen‐Doped Carbon for High‐Energy‐Density Supercapacitors (Adv. Energy Mater. 39/2026)

Aqueous Supercapacitors The cover contrasts conventional nitrogen-doped carbon (left) with Pb single-atom decorated nitrogen-doped carbon (right). While the pristine electrode suffers from water electrolysis accompanied by hydrogen and oxygen bubble generation, Pb single atoms suppress parasitic gas evolution, enabling efficient charge storage and transport. This atomic-scale design delivers stable, high-energy-density aqueous supercapacitors. More in article number e70900, Min-Cheol Kim, Jung Kyu Kim, and co-workers.