[en] Ultrathin core–shell V${}_3$S${}_4$@C nanosheets assembled into hierarchical nanotubes (V${}_3$S${}_4$@C NS‐HNTs) are synthesized by a self‐template strategy and evaluated as general anodes for alkali‐ion batteries. Structural/physicochemical characterizations and DFT calculations bring insights into the intrinsic relationship between crystal structures and electrochemical mechanisms of the V${}_3$S${}_4$@C NS‐HNTs electrode. The V${}_3$S${}_4$@C NS‐HNTs are endowed with strong structural rigidness owing to the layered VS${}_2$ subunits and interlayer occupied V atoms, and efficient alkali‐ion adsorption/diffusion thanks to the electroactive V${}_3$S${}_4$‐C interfaces. The resulting V${}_3$S${}_4$@C NS‐HNTs anode exhibit distinct alkali‐ion‐dependent charge storage mechanisms and exceptional long‐durability cyclic performance in storage of K${}^{+}$, benefiting from synergistic contributions of pseudocapacitive and reversible intercalation/de‐intercalation behaviors superior to those of the conversion‐reaction‐based Li${}^{+}$‐/Na${}^{+}$‐storage counterparts. (© 2019 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)