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

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

Article type
Paper
Submitted
11 nov 2020
Accepted
16 jan 2021
First published
02 fev 2021
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2021,3, 1690-1698

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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