Engineering Bi/V/Mo‐Based Multicomponent Heterostructure Electrocatalyst Toward Robust Lithium–Sulfur Batteries and Mechanistic Insights into the Self‐Reconstruction

S decomposition energy barrier is achieved after the in situ electrochemical reconstruction. This work not only provides new mechanistic insights into developing high-efficiency sulfur electrocatalysts but also sheds light on regulating the catalytic activity via self-reconstruction.