3D urchin-like architectures assembled by MnS nanorods encapsulated in N-doped carbon tubes for superior lithium storage capability

Ruirui Wang, Baosheng Li, Linfei Lai, Mingzhen Hou, Jingchang Gao, Renbing Wu

Research output: Contribution to journalArticlepeer-review

76 Scopus citations

Abstract

With a remarkable advantage of high capacity, manganese sulfides have been considered as promising anode materials for lithium storage. However, they suffer from low electrical conductivity and severe volume variation during charge/discharge process, leading to electrode pulverization and rapid capacity decay. To address these challenges, herein, a three-dimensional (3D) urchin-like composite structure assembled by MnS nanorods encapsulated in N-doped carbon tubes (MnS@NC) has been rationally designed. When evaluated as anode for lithium-ion battery, the MnS@NC composites displayed high reversible capacity (885 mAh g−1 after 400 cycles at 400 mA g−1) and outstanding rate performance (624, 505, 404 and 306 mAh g−1 at current densities of 0.8, 1.6, 3.2 and 6.4 A g−1, respectively). The remarkable electrochemical performance can be ascribed to the unique 3D urchin-like structure and the protection of N-doped carbon tubes, which not only effectively maintain the structural integrity of the electrode, but also improve the electrical conductivity of active material and buffer the volume variation during charge/discharge process.

Original languageEnglish
Pages (from-to)752-759
Number of pages8
JournalChemical Engineering Journal
Volume355
DOIs
StatePublished - 1 Jan 2019

Keywords

  • Anodes
  • Lithium-ion batteries
  • MnS nanorods
  • N-doped carbon tubes
  • Urchin-like architectures

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