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Issue 6, 2021

Interconnected NiCo2O4 nanosheet arrays grown on carbon cloth as a host, adsorber and catalyst for sulfur species enabling high-performance Li–S batteries

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Abstract

Li–S batteries are a promising next-generation electrochemical energy-storage system due to their high energy density, as well as the abundance and low cost of sulfur. However, the low conductivity of sulfur and Li2S/Li2S2, as well as the dissolution and shuttling of intermediate lithium polysulfides, is a great challenge for high-performance Li–S batteries. Herein, interconnected NiCo2O4 nanosheet arrays grown on carbon cloth (CC) are applied as the cathode (S/NiCo2O4/CC) in Li–S batteries for accommodating sulfur. The obtained cathode shows high conductivity, high dispersion of sulfur species and excellent polysulfide adsorption and catalytic properties. As a result, significantly higher specific capacity (1480 vs. 1048 mA h g−1 at 0.1C) and greatly enhanced rate performance (624 vs. 215 mA h g−1 at 2C) are obtained for the S/NiCo2O4/CC cathode in comparison to S/CC. Further, the S/NiCo2O4/CC cathode demonstrates a low capacity decay of 0.060% per cycle over 400 cycles at 0.5C.

Graphical abstract: Interconnected NiCo2O4 nanosheet arrays grown on carbon cloth as a host, adsorber and catalyst for sulfur species enabling high-performance Li–S batteries

Supplementary files

Article information


Submitted
11 Nov 2020
Accepted
16 Jan 2021
First published
02 Feb 2021

This article is Open Access

Nanoscale Adv., 2021,3, 1690-1698
Article type
Paper

Interconnected NiCo2O4 nanosheet arrays grown on carbon cloth as a host, adsorber and catalyst for sulfur species enabling high-performance Li–S batteries

J. Zhou, X. Yang, Y. Zhang, J. Jia, X. He, L. Yu, Y. Pan, J. Liao, M. Sun and J. He, Nanoscale Adv., 2021, 3, 1690 DOI: 10.1039/D0NA00947D

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