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Natural Soft/Rigid Superlattices as Anodes for High-Performance Lithium-Ion Batteries

Journal Article


Abstract


  • Volume expansion and poor conductivity are two major obstacles that hinder the pursuit of the lithium-ion batteries with long cycling life and high power density. Herein, we highlight a misfit compound PbNbS3 with a soft/rigid superlattice structure, confirmed by scanning tunneling microscopy and electrochemical characterization, as a promising anode material for high performance lithium-ion batteries with optimized capacity, stability, and conductivity. The soft PbS sublayers primarily react with lithium, endowing capacity and preventing decomposition of the superlattice structure, while the rigid NbS2 sublayers support the skeleton and enhance the migration of electrons and lithium ions, as a result leading to a specific capacity of 710 mAh g−1 at 100 mA g−1, which is 1.6 times of NbS2 and 3.9 times of PbS. Our finding reveals the competitive strategy of soft/rigid structure in lithium-ion batteries and broadens the horizons of single-phase anode material design.

UOW Authors


Publication Date


  • 2020

Citation


  • Bai, W., Gao, J., Li, K., Wang, G., Zhou, T., Li, P., . . . Xie, Y. (2020). Natural Soft/Rigid Superlattices as Anodes for High-Performance Lithium-Ion Batteries. Angewandte Chemie - International Edition, 59(40), 17494-17498. doi:10.1002/anie.202008197

Scopus Eid


  • 2-s2.0-85089258298

Start Page


  • 17494

End Page


  • 17498

Volume


  • 59

Issue


  • 40

Abstract


  • Volume expansion and poor conductivity are two major obstacles that hinder the pursuit of the lithium-ion batteries with long cycling life and high power density. Herein, we highlight a misfit compound PbNbS3 with a soft/rigid superlattice structure, confirmed by scanning tunneling microscopy and electrochemical characterization, as a promising anode material for high performance lithium-ion batteries with optimized capacity, stability, and conductivity. The soft PbS sublayers primarily react with lithium, endowing capacity and preventing decomposition of the superlattice structure, while the rigid NbS2 sublayers support the skeleton and enhance the migration of electrons and lithium ions, as a result leading to a specific capacity of 710 mAh g−1 at 100 mA g−1, which is 1.6 times of NbS2 and 3.9 times of PbS. Our finding reveals the competitive strategy of soft/rigid structure in lithium-ion batteries and broadens the horizons of single-phase anode material design.

UOW Authors


Publication Date


  • 2020

Citation


  • Bai, W., Gao, J., Li, K., Wang, G., Zhou, T., Li, P., . . . Xie, Y. (2020). Natural Soft/Rigid Superlattices as Anodes for High-Performance Lithium-Ion Batteries. Angewandte Chemie - International Edition, 59(40), 17494-17498. doi:10.1002/anie.202008197

Scopus Eid


  • 2-s2.0-85089258298

Start Page


  • 17494

End Page


  • 17498

Volume


  • 59

Issue


  • 40