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
Hauptverfasser: Khandelwal, Mahima, Nguyen, Anh Phan, Tran, Chau Van, In, Jung Bin
Format: Artikel
Sprache:eng
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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.
ISSN:2046-2069
2046-2069
DOI:10.1039/d1ra08048b