Issue 3, 2023

Tunable construction of CuS nanosheets@flower-like ZnCo-layered double hydroxide nanostructures for hybrid supercapacitors

Abstract

Layered double hydroxides (LDHs) are regarded as ideal materials for supercapacitors due to their excellent electrochemical characteristics and unique structural properties. However, unsatisfactory cyclability and poor conductivity have been recognized as the key limitations to LDH performance. To overcome these obstacles, constructing hybrid materials as well as designing porous nanoarchitectures are efficient approaches. Herein, through controlling the sulfide ion concentration during the synthesis of CuS nanosheets and adjusting the amount of urea in the synthesis of flower-like ZnCo-LDH structures, an optimized sample with an exclusive porous texture was fabricated on nickel foam (NF) (identified as NF@CS10-ZC-LDH4) via two-step hydrothermal routes and then employed as a binder-less electrode for a hybrid supercapacitor. The as-fabricated nanoarchitectures provide efficient electron-ion transport channels and preserve the structural integrity during prolonged periods of cycling, which resulted in fantastic supercapacitive properties with a capacity of 1270.5 C g−1 and excellent cyclability (remaining at 90.7% after 7000 cycles). Furthermore, we fabricated a hybrid supercapacitor (NF@CS10-ZC-LDH4//NF@AC) with NF@CS10-ZC-LDH4 as a cathode electrode and activated carbon (AC)-covered NF as an anode electrode. The energy density of NF@CS10-ZC-LDH4//NF@AC was high, at 62.4 W h kg−1 with a power density of 810.4 W kg−1 and splendid cyclability of 88.4%. This innovative study offers valuable inspiration for the synthesis of electrode materials to be used in hybrid supercapacitors.

Keywords: Layered double hydroxides; Flower-like ZnCo-LDH; Hybrid supercapacitors; CuS nanosheets.

Graphical abstract: Tunable construction of CuS nanosheets@flower-like ZnCo-layered double hydroxide nanostructures for hybrid supercapacitors

Supplementary files

Transparent peer review

To support increased transparency, we offer authors the option to publish the peer review history alongside their article.

View this article’s peer review history

Article information

Article type
Paper
Submitted
07 mar 2023
Accepted
09 may 2023
First published
10 may 2023
This article is Open Access
Creative Commons BY-NC license

Ind. Chem. Mater., 2023,1, 443-457

Tunable construction of CuS nanosheets@flower-like ZnCo-layered double hydroxide nanostructures for hybrid supercapacitors

A. Mohammadi Zardkhoshoui, R. Arian and S. S. Hosseiny Davarani, Ind. Chem. Mater., 2023, 1, 443 DOI: 10.1039/D3IM00027C

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements