Chemical vapor deposition growth of carbon nanotube confined nickel sulfides from porous electrospun carbon nanofibers and their superior lithium storage properties

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • An Wang
  • Sanmu Xie
  • Rong Zhang
  • Yiyi She
  • Chuan Chen
  • Chunming Niu
  • Hongkang Wang

Detail(s)

Original languageEnglish
Pages (from-to)656-663
Journal / PublicationNanoscale Advances
Volume1
Issue number2
Online published12 Oct 2018
Publication statusPublished - 1 Feb 2019

Link(s)

Abstract

Multidimensional architecture design is a promising strategy to explore unique physicochemical characteristics by synergistically integrating different structural and compositional materials. Herein, we report the facile synthesis of a novel dendritic hybrid architecture, where carbon nanotubes (CNTs) with nickel sulfide nanoparticles encapsulated inside are epitaxially grown out of the porous electrospun N-doped carbon nanofibers (CNFs) (denoted as CNT@NS@CNFs) through a combined strategy of electrospinning and chemical vapor deposition (CVD). The adopted thiophene (C4H4S) not only serves as a carbon source for the growth of CNTs but also as a sulfur source for the sulfurization of Ni particles and S-doping into carbon matrices. When examined as an anode material for lithium-ion batteries (LIBs), the dendritic CNT@NS@CNFs display superior lithium storage properties including good cycle stability and high rate capability, delivering a high reversible capacity of 630 mA h g−1 at 100 mA g−1 after 200 cycles and 277 mA h g−1 at a high rate of 1000 mA g−1. These outstanding electrochemical properties can be attributed to the novel hybrid architecture, in which the encapsulation of nickel sulfide nanoparticles within the CNT/CNFs not only efficiently buffers the volume changes upon lithiation/delithiation, but also facilitates charge transfer and electrolyte diffusion owing to the highly conductive networks with open frame structures.

Research Area(s)

Citation Format(s)

Chemical vapor deposition growth of carbon nanotube confined nickel sulfides from porous electrospun carbon nanofibers and their superior lithium storage properties. / Wang, An; Xie, Sanmu; Zhang, Rong; She, Yiyi; Chen, Chuan; Leung, Micheal K. H.; Niu, Chunming; Wang, Hongkang.

In: Nanoscale Advances, Vol. 1, No. 2, 01.02.2019, p. 656-663.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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