Cation Defect‐Engineered Boost Fast Kinetics of Two‐Dimensional Topological Bi2Se3 Cathode for High‐Performance Aqueous Zn‐Ion Batteries

cathode demonstrate respectable performance and superior flexibility even under high mass loading. This work implements a conceptually innovative strategy represented by cation defect design in topological insulator cathode for achieving high-performance battery electrochemistry.