Efficient sulfur host based on NiCo2O4 hollow microtubes for advanced Li-S batteries

Azhar Iqbal; Zahid Ali Ghazi; Abdul Muqsit Khattak; Aziz Ahmad

doi:10.1016/j.jssc.2017.09.009

Efficient sulfur host based on NiCo₂O₄ hollow microtubes for advanced Li-S batteries

Azhar Iqbal^*, Zahid Ali Ghazi, Abdul Muqsit Khattak, Aziz Ahmad

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

High energy density and cost effectiveness make lithium-sulfur battery a promising candidate for next-generation electrochemical energy storage technology. Here, we have synthesized a highly efficient sulfur host namely NiCo₂O₄ hollow microtubes/sulfur composite (NiCo₂O₄/S). The hollow interior cavity providing structural integrity while sufficient self-functionalized surfaces of NiCo₂O₄ chemically bind polysulfides to prevent their dissolution in the organic electrolyte. When used in lithium-sulfur batteries, the synthesized NiCo₂O₄/S cathode delivers high specific capacity (1274 mAh g⁻¹ at 0.2 C), long cycling performance at 0.5 C, and good rate capability at high current rates.

Original language	English
Pages (from-to)	189-195
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	256
DOIs	https://doi.org/10.1016/j.jssc.2017.09.009
State	Published - Dec 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Inc.

Keywords

Cycling performance
Hollow microtubes
Li-sulfur batteries
Metal oxides
Polysulfide confinement
Sulfur host

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jssc.2017.09.009

Cite this

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title = "Efficient sulfur host based on NiCo2O4 hollow microtubes for advanced Li-S batteries",

abstract = "High energy density and cost effectiveness make lithium-sulfur battery a promising candidate for next-generation electrochemical energy storage technology. Here, we have synthesized a highly efficient sulfur host namely NiCo2O4 hollow microtubes/sulfur composite (NiCo2O4/S). The hollow interior cavity providing structural integrity while sufficient self-functionalized surfaces of NiCo2O4 chemically bind polysulfides to prevent their dissolution in the organic electrolyte. When used in lithium-sulfur batteries, the synthesized NiCo2O4/S cathode delivers high specific capacity (1274 mAh g−1 at 0.2 C), long cycling performance at 0.5 C, and good rate capability at high current rates.",

keywords = "Cycling performance, Hollow microtubes, Li-sulfur batteries, Metal oxides, Polysulfide confinement, Sulfur host",

author = "Azhar Iqbal and {Ali Ghazi}, Zahid and {Muqsit Khattak}, Abdul and Aziz Ahmad",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Inc.",

year = "2017",

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doi = "10.1016/j.jssc.2017.09.009",

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volume = "256",

pages = "189--195",

journal = "Journal of Solid State Chemistry",

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AU - Iqbal, Azhar

AU - Ali Ghazi, Zahid

AU - Muqsit Khattak, Abdul

AU - Ahmad, Aziz

PY - 2017/12

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AB - High energy density and cost effectiveness make lithium-sulfur battery a promising candidate for next-generation electrochemical energy storage technology. Here, we have synthesized a highly efficient sulfur host namely NiCo2O4 hollow microtubes/sulfur composite (NiCo2O4/S). The hollow interior cavity providing structural integrity while sufficient self-functionalized surfaces of NiCo2O4 chemically bind polysulfides to prevent their dissolution in the organic electrolyte. When used in lithium-sulfur batteries, the synthesized NiCo2O4/S cathode delivers high specific capacity (1274 mAh g−1 at 0.2 C), long cycling performance at 0.5 C, and good rate capability at high current rates.

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