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Construction of Hierarchical Nanotubes Assembled from Ultrathin V 3 S 4 @C Nanosheets towards Alkali‐Ion Batteries with Ion‐Dependent Electrochemical Mechanisms
Author(s) -
Liu Yang,
Sun Zehang,
Sun Xuan,
Lin Yue,
Tan Ke,
Sun Jinfeng,
Liang Longwei,
Hou Linrui,
Yuan Changzhou
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201913343
Subject(s) - alkali metal , electrochemistry , anode , intercalation (chemistry) , materials science , ion , diffusion , nanotechnology , chemical engineering , electrode , inorganic chemistry , chemistry , organic chemistry , physics , engineering , thermodynamics
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.