Rational Design of Quasi-1D Multicore-Shell MnSe@N-Doped Carbon Nanorods as High-Performance Anode Material for Sodium-Ion Batteries

Lei Wang, Fei Huang, Xinmei Song, Jiayi Li, Guoyin Zhu, Zhong Jin, Zhihui Dai

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Sodium-ion batteries (SIBs) are considered one of the promising candidates for energy storage devices due to the low cost and low redox potential of sodium. However, their implementation is hindered by sluggish kinetics and rapid capacity decay caused by inferior conductivity, lattice deterioration, and volume changes of conversion-type anode materials. Herein, we report the design of a multicore-shell anode material based on manganese selenide (MnSe) nanoparticle encapsulated N-doped carbon (MnSe@NC) nanorods. Benefiting from the conductive multicore-shell structure, the MnSe@NC anodes displayed prominent rate capability (152.7 mA h g-1 at 5 A g-1) and long lifespan (132.7 mA h g-1 after 2000 cycles at 5 A g-1), verifying the essence of reasonable anode construction for high-performance SIBs. Systematic in situ microscopic and spectroscopic methods revealed a highly reversible conversion reaction mechanism of MnSe@NC. Our study proposes a promising route toward developing advanced transition metal selenide anodes and comprehending electrochemical reaction mechanisms toward high-performance SIBs.

Original languageEnglish
Pages (from-to)11349-11357
Number of pages9
JournalNano Letters
Volume24
Issue number37
DOIs
StatePublished - 18 Sep 2024
Externally publishedYes

Keywords

  • Anode material
  • Conversion reaction mechanism
  • MnSe
  • Nitrogen-doped nanoporous carbon
  • Sodium-ion batteries

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