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Rational design of nanoporous Cu-Co-Ni-P nanotube arrays and CoFe2Se4 nanosheet arrays for flexible solid-state asymmetric devices

Abstract

Porous structures have attracted considerable attention as promising electrode designs for supercapacitor applications. Herein, we introduce a procedure towards the construction of nanoporous CuCoNi-P nanotube arrays (CCNP-NAs) by a metal-organic framework and hierarchical CoFe2Se4 nanosheet arrays (CFS-NAs) through a hydrothermal strategy, followed by selenization for the flexible asymmetric device. Due to the unique design of electrode materials, the CCNP-NA and CFS-NA electrodes show exceptional specific capacities of ~406.73 and 248.2 mAh g-1 at 2 A g-1, reasonable rate capabilities of 84.2 and 71.2% at 50 A g-1, and remarkable durability of 98.9% and 95.1%, respectively. Remarkably, an advanced flexible device constructs using the CCNP-NA positive electrode and CFS-NA negative electrode. Our flexible device demonstrates tremendous energy density (~153.5 W h kg-1 at 852.8 W kg-1), super-high durability of 96.2%, and considerable flexibility under bending conditions. This work proposes insight into the rational construction of porous nanostructures for next-generation electronic devices.

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Supplementary files

Article information


Submitted
16 Mar 2020
Accepted
23 Jun 2020
First published
24 Jun 2020

Dalton Trans., 2020, Accepted Manuscript
Article type
Paper

Rational design of nanoporous Cu-Co-Ni-P nanotube arrays and CoFe2Se4 nanosheet arrays for flexible solid-state asymmetric devices

A. Mohammadi Zardkhoshoui and S. S. Hosseiny Davarani, Dalton Trans., 2020, Accepted Manuscript , DOI: 10.1039/D0DT00989J

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