Sn-C bonding riveted SnSe nanoplates vertically grown on nitrogen-doped carbon nanobelts for high-performance sodium-ion battery anodes

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Xiaochuan Ren
  • Jinsong Wang
  • Daming Zhu
  • Qingwei Li
  • Weifeng Tian
  • Lei Wang
  • Jiabao Zhang
  • Ling Miao
  • Kaifu Huo

Detail(s)

Original languageEnglish
Pages (from-to)322-330
Journal / PublicationNano Energy
Volume54
Online published18 Oct 2018
Publication statusPublished - Dec 2018

Abstract

SnSe is a promising anode material in sodium-ion batteries (SIBs) due to its high theoretical capacity (780 mA h g−1) and natural abundance. Herein, we report SnSe nanoplates vertically grown on nitrogen-doped carbon (SnSe/NC) with strong Sn-C bonding for high-performance anode in SIBs, which are synthesized by a facial cation-exchange strategy. The vertically grown SnSe nanoplates with large interplanar spacing (0.58 nm), strong electronic coupling of Sn-C bonding between SnSe and NC facilitate the fast electron/ion transfer, enabling high pseudocapacitive Na-ion storage and enhanced power capability. Density functional theory calculations demonstrate that the presence of N heteroatoms in NC matrix has a pivotal influence on the formation of Sn-C bonding to stabilize the SnSe/NC structure. Moreover, the SnSe nanoplates of SnSe/NC exhibits low interlayer Na+ diffusion barrier (0.1 eV) and low energy barrier (0.14 eV/uc) from discharged product to pristine SnSe/NC, implying the fast Na+ diffusion capability and good reversibility. Consequently, the SnSe/NC exhibits large capacities of 723 and 88 mA h g−1 at 0.025 and 20 A g−1, respectively, and 82% capacity retention for over 200 cycles at 2 A g−1, boosting promising applications in high-performance SIBs.

Research Area(s)

  • Cation exchange, Sn-C bonding, Sodium-ion batteries, Tin selenide, Vertical growth

Citation Format(s)

Sn-C bonding riveted SnSe nanoplates vertically grown on nitrogen-doped carbon nanobelts for high-performance sodium-ion battery anodes. / Ren, Xiaochuan; Wang, Jinsong; Zhu, Daming; Li, Qingwei; Tian, Weifeng; Wang, Lei; Zhang, Jiabao; Miao, Ling; Chu, Paul K.; Huo, Kaifu.

In: Nano Energy, Vol. 54, 12.2018, p. 322-330.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review