Simple fabrication of Co 3 O 4 nanoparticles on N-doped laser-induced graphene for high-performance supercapacitors
This study demonstrates a simple strategy to fabricate Co O on N-doped laser-induced graphene (Co O -NLIG) based on duplicate laser pyrolysis, enabling the generation of Co O nanoparticles and heteroatom doping in laser-induced graphene (LIG). Morphological analyses reveal the uniform distribution o...
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Veröffentlicht in: | RSC advances 2021-11, Vol.11 (61), p.38547-38554 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | This study demonstrates a simple strategy to fabricate Co
O
on N-doped laser-induced graphene (Co
O
-NLIG) based on duplicate laser pyrolysis, enabling the
generation of Co
O
nanoparticles and heteroatom doping in laser-induced graphene (LIG). Morphological analyses reveal the uniform distribution of Co
O
nanoparticles on the surface of the LIG structure. The modification of NLIG with Co
O
nanoparticles results in impressive electrochemical performance due to the contributions from electric double-layer capacitance and pseudocapacitance. The optimal Co
O
-NLIG is produced at 20 wt% cobalt precursor loading (Co
O
-NLIG-20). In a three-electrode setup, this electrode exhibits a specific areal capacitance (
) of 216.3 mF cm
at a current density of 0.5 mA cm
in a 1 M KOH electrolyte. When the optimal electrodes are assembled into a solid-state supercapacitor (Co
O
-NLIG-SC) using a poly(vinyl alcohol) phosphoric acid (PVA-H
PO
) gel electrolyte, a
of 17.96 mF cm
is obtained with good cycling stability. |
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ISSN: | 2046-2069 2046-2069 |
DOI: | 10.1039/d1ra08048b |