In:
ChemistrySelect, Wiley, Vol. 5, No. 2 ( 2020-01-16), p. 660-667
Abstract:
Self‐supported hollow nanoarrays with rich active sites hold great promise as binder‐free electrode for supercapacitors. In this work, the hollow Co‐Ni−S nanowedge arrays (NWAs) have been fabricated on Ni foam (NF) substrate through a facile sulfidation and etch of ZIF−L‐Co NWAs/NF. Structural evolution upon solvothermal time indicates that the formation of hollow Co‐Ni−S NWAs is mainly due to the etch of defect‐rich interior of solid ZIF−L‐Co NWAs. The unique hollow nanowedge structural and compositional advantages ensure the hollow Co‐Ni−S NWAs excellent electrochemical properties with areal capacity of 0.286 mA h cm −2 at 5 mA cm −2 , and 78% capacity retention after 2000 cycles. Moreover, the hybrid supercapacitor (HSC) of Co‐Ni−S // AC has been assembled, which illustrates good application performance. The results indicate that the Co‐Ni−S NWAs/NF is a promising binder‐free electrode for high‐performance hybrid supercapacitors.
Type of Medium:
Online Resource
ISSN:
2365-6549
,
2365-6549
DOI:
10.1002/slct.201904496
Language:
English
Publisher:
Wiley
Publication Date:
2020
detail.hit.zdb_id:
2844262-3