Lanthanum sulfide-manganese sulfide/graphene oxide (La2S3-MnS/GO) composite thin film as an electrocatalyst for oxygen evolution reactions

In this study, the lanthanum sulfide-manganese sulfide (La 2 S 3 -MnS) nanosheet composite films with different thicknesses were grown on graphene oxide (GO) (LMS/GO) coated stainless steel substrate using binder-free successive ionic layer adsorption and reaction (SILAR) method, for the first time....

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Bibliographic Details
Published inJournal of solid state electrochemistry Vol. 25; no. 6; pp. 1775 - 1788
Main Authors Mane, Vikas J., Kale, Shital B., Ubale, Shivaji B., Lokhande, Vaibhav C., Patil, Umakant M., Lokhande, Chandrkant D.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.06.2021
Springer Nature B.V
Subjects
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Crystal structure
Electrocatalysts
Electrochemistry
Energy Storage
Graphene
Lanthanum
Lanthanum sulfide
Manganese
Nanosheets
Original Paper
Oxygen evolution reactions
Photoelectrons
Physical Chemistry
Stainless steels
Substrates
Surface layers
Thickness
Thin films
Graphene oxide
Lanthanum sulfide-manganese sulfide
Oxygen evolution reaction
Composite
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Summary:In this study, the lanthanum sulfide-manganese sulfide (La 2 S 3 -MnS) nanosheet composite films with different thicknesses were grown on graphene oxide (GO) (LMS/GO) coated stainless steel substrate using binder-free successive ionic layer adsorption and reaction (SILAR) method, for the first time. The formation of crystal structure and chemical states was identified using X-ray diffraction analysis and X-ray photoelectron spectroscopy, respectively. The nitrogen sorption analysis showed the micro-/mesoporous structure of La 2 S 3 -MnS-90/GO thin film exhibiting a specific surface area of 170 m 2 g -1 and hydrophilic nature. The scanning electron microscopic image showed microstructure with porous ultrathin interconnected nanosheets. Surface texture was examined using transmission electron microscopy. The resulting La 2 S 3 -MnS-90/GO thin film electrocatalyst showed oxygen evolution reaction (OER) overpotential as low at 263 mV to reach 10 mA cm -2 current density with Tafel slope of 48 mV dec -1 for in 1 M KOH solution and stability over 50 h. Consequently, it could be considered one of the alternate sulfide-based catalysts for highly efficient OER evolution.
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-021-04945-7