MnS@N,S Co‐Doped Carbon Core/Shell Nanocubes: Sulfur‐Bridged Bonds Enhanced Na‐Storage Properties Revealed by In Situ Raman Spectroscopy and Transmission Electron Microscopy

corresponding to a low capacity attenuation rate of 0.0068% per cycle, which is superior to that of pristine MnS and most of the reported Mn-based anode materials in SIBs.