Jump to main content
Jump to site search


Hollow shell-in-shell Ni3S4@Co9S8 tubes derived from core–shell Ni-MOF-74@Co-MOF-74 as efficient faradaic electrodes

Abstract

This paper reports a novel design of shell-in-shell Ni3S4@Co9S8 double-shelled tube (DST) hierarchical structures with different shell compositions, and the subsequent attempt to fabricate these structures. We fabricated such unique shell-in-shell hierarchical structure through the transition from isomorphic metal–organic framework core–shell structures of Ni-MOF-74@Co-MOF-74 in the presence of Na2S under a solvent thermal condition. The as-prepared Ni3S4@Co9S8 DSTs demonstrated high specific capacity (up to 1257.4 F g-1 at a current density of 4 A g-1) with excellent charge–discharge reversibility (with 81.5% capacity retention after 1000 cycles), which is superior to that of the single-shelled Co9S8 tubes (337.8 F-1 at 1 A g-1). The specific capacity of the prepared DST electrode also showed exceptional performance at a current density of 20 A g-1. Approximately 74.0% of the obtained value of the specific capacity was retained at 1 A g-1. This approach is a facile method to produce novel electrode materials for energy storage devices and a useful self-templated strategy for the preparation of multi-shelled hollow materials with different shell compositions for different functions.

Back to tab navigation

Supplementary files

Publication details

The article was received on 29 Oct 2017, accepted on 04 Jan 2018 and first published on 05 Jan 2018


Article type: Paper
DOI: 10.1039/C7CE01873H
Citation: CrystEngComm, 2018, Accepted Manuscript
  •   Request permissions

    Hollow shell-in-shell Ni3S4@Co9S8 tubes derived from core–shell Ni-MOF-74@Co-MOF-74 as efficient faradaic electrodes

    H. Li, F. Yue, H. Xie, C. Yang, Y. Zhang, L. Zhang and J. Wang, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C7CE01873H

Search articles by author

Spotlight

Advertisements