Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 21st October 2020 from 07:00 AM to 07:00 PM (BST).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 40, 2020
Previous Article Next Article

1D-CoSe2 nanoarray: a designed structure for efficient hydrogen evolution and symmetric supercapacitor characteristics

Author affiliations

Abstract

Direct growth of self-supported one-dimensional (1D) nanorod arrays on conducting substrates is highly attractive for electrocatalysis, due to their unique shape, size, and length. In this work, a facile and simple two-step method was employed to synthesize 1D-CoSe2 nanoarrays on titanium (Ti) foil via a wet chemical ion-exchange approach. The as-synthesized 1D-CoSe2 nanoarrays were directly used as electrode materials for hydrogen evolution reaction and supercapacitors. As an electrocatalyst, the optimized 1D-CoSe2(tex-48 h) nanoarray exhibits excellent hydrogen evolution properties with a small Tafel slope of 78 mV dec−1, low overpotentials of 41 mV@1 mA cm−2 and 216 mV@10 mA cm−2, and extended robust performance for 25 h. Moreover, for a symmetric device, it delivers a maximum specific capacitance of 152 F g−1 at 0.5 A g−1 and a better energy density of 21.1 W h kg−1 at a power density of 0.5 kW kg−1. Also, the symmetric device capacity retention behavior achieves ∼96.8% of the initial result after 5000 cycles, revealing the good stability of the electrode. Our findings offer a new way to further the development of high-performance energy devices.

Graphical abstract: 1D-CoSe2 nanoarray: a designed structure for efficient hydrogen evolution and symmetric supercapacitor characteristics

Back to tab navigation

Supplementary files

Article information


Submitted
20 Jul 2020
Accepted
18 Sep 2020
First published
18 Sep 2020

Dalton Trans., 2020,49, 14191-14200
Article type
Paper

1D-CoSe2 nanoarray: a designed structure for efficient hydrogen evolution and symmetric supercapacitor characteristics

I. Rabani, S. Hussain, D. Vikraman, Y. Seo, J. Jung, A. Jana, N. K. Shrestha, M. Jalalah, Y. Noh and S. A. Patil, Dalton Trans., 2020, 49, 14191
DOI: 10.1039/D0DT02548H

Social activity

Search articles by author

Spotlight

Advertisements