Issue 3, 2019

Co(OH)2@MnO2 nanosheet arrays as hybrid binder-free electrodes for high-performance lithium-ion batteries and supercapacitors

Abstract

Co(OH)2@MnO2 nanosheet arrays were directly grown on nickel foam via two-step electrodeposition method with subsequent heat treatment at 170 °C. The hybrid electrode, where the electrodeposited Co(OH)2 and MnO2 nanosheets were inlayed with each other, was formed and employed as a binder-free anode material for a lithium-ion battery (LIB) and as an electrode for a supercapacitor (SC). For both applications, LIB and SC, the Co(OH)2@MnO2 nanosheet electrode exhibited appreciable cycling stability with high specific capacity as well as specific capacitance and rate capability. The excellent electrochemical performances of this hybrid nanosheet electrode were probably ascribed to their unique 3D architecture, which provides large active sites for efficient electrochemical reactions and the synergistic effects of the two active materials. The electrodeposition method appears to be suitable for the fabrication of binder-free, nanostructured, hybrid arrays, and as demonstrated here, the Co(OH)2@MnO2 nanosheet could potentially be used as a high-performance LIB and SC electrode material.

Graphical abstract: Co(OH)2@MnO2 nanosheet arrays as hybrid binder-free electrodes for high-performance lithium-ion batteries and supercapacitors

Supplementary files

Article information

Article type
Paper
Submitted
21 Sep 2018
Accepted
16 Nov 2018
First published
19 Nov 2018

New J. Chem., 2019,43, 1257-1266

Co(OH)2@MnO2 nanosheet arrays as hybrid binder-free electrodes for high-performance lithium-ion batteries and supercapacitors

M. Kundu, G. Singh and A. M. Svensson, New J. Chem., 2019, 43, 1257 DOI: 10.1039/C8NJ04816A

To request permission to reproduce material from this article, 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 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