MoS2 nanorods anchored reduced graphene oxide nanohybrids for electrochemical energy conversion applications

Kumar, Sanjeev; Kaur, Navdeep; Bhullar, Viplove; Mahajan, Aman

doi:10.1016/j.physe.2020.114589

Cited by 11 publications

(10 citation statements)

References 51 publications

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“…Furthermore, to evaluate the CO tolerance due to the intermediates formed on the MoS 2 electrocatalyst surface during decomposition of methanol, the ratio of I f /I b is calculated. 35 In general, methanol is oxidized to CO It is measured by setting a potential of 0.7 V (first step) and 0.15 V (second step) in the absence and presence of 0.5 M methanol. From all the CV curves of three electrodes, it is understood that after the addition of methanol, there is an increase in current density compared to the blank solution.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…The overall process of MOR undergoes required elementary steps such as adsorption of methanol, dehydrogenation of methanol into intermediate products, and oxidation of these intermediates into CO 2 . The plausible electrochemical reaction for MOR on the surface of MoS 2 electrocatalyst is given in eqs – as follows. In the first step, methanol molecules get adsorbed on the surface of MoS 2 catalyst that provides a large surface area and active sites. The adsorbed methanol is decomposed to poisonous CO intermediate as a second step.…”

Section: Resultsmentioning

confidence: 99%

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Vertically Aligned Few-Layer Crumpled MoS₂ Hybrid Nanostructure on Porous Ni Foam toward Promising Binder-Free Methanol Electro-Oxidation Application

Gopalakrishnan

Durai

et al. 2021

Energy Fuels

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MoS 2 , a two-dimensional nanomaterial analogous to graphene, has interesting catalytic properties that make it suitable for the hydrogen evolution reaction, but reports are scarce on its fuel cell application. Herein, we report a novel vertically aligned crumpled MoS 2 nanosheet hybrid nanostructure architecture on porous Ni foam (MoS 2 /NF-5) via a facile, one-pot hydrothermal synthesis approach. The porous binder-free Ni foam (NF) promotes the uniform growth of ultrathin MoS 2 nanosheets, due to its grain boundaries acting as nucleation sites, and reduces the interfacial resistance between MoS 2 and substrate. The hybrid nanostructure of spongy nanoparticles decorated over nanosheets morphology provides synergistic effect for rapid charge transfer reaction with short diffusion path and enhances the electrocatalytic active sites. The electrochemical analysis of as-obtained optimized MoS 2 /NF-5 reveals an outstandingly high electroactive surface area with the presence of both adsorption and diffusion process at the surface, indicating its potential toward a variety of electrochemical applications. The binder-free MoS 2 /NF-5 displays excellent electro-oxidation of methanol with high current tolerance of 73 mA/cm 2 , high durability (only 20% loss after 5000 s), and low overpotential (0.3 V) due to the presence of electroactive sites and conductive substrate for facile charge transportation. Hence, this platform of MoS 2 morphology directly grown on 3D NF substrate with excellent electrochemical properties can be utilized as a potential binder-free electrode for catalytic and electrochemical applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Vertically Aligned Few-Layer Crumpled MoS₂ Hybrid Nanostructure on Porous Ni Foam toward Promising Binder-Free Methanol Electro-Oxidation Application

Gopalakrishnan

Durai

et al. 2021

Energy Fuels

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“…For instance, graphene, with its excellent conductivity, can reduce charge recombination. Additionally, 2D MoS 2 induced photoanodes have been found to promote efficient electron transfer [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

ZnO/Ti₃C₂T_x composite photoanodes for efficient dye-sensitized solar cells

He,

Li,

Liu

et al. 2024

J. Phys. D: Appl. Phys.

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Dye-sensitized solar cells (DSSC) have gained significant attention as a promising photovoltaic technology due to their simple fabrication methods and low cost. To improve the competitiveness of DSSC against other photovoltaic devices, enhancing the efficiency is crucial. In this study, we explore the incorporation of Ti3C2Tx, a two-dimensional (2D) material known for its excellent conductivity, into the fabrication of composite photoanode films for DSSC. We prepared ZnO/Ti3C2Tx composite films with different concentration of 0.1%, 0.2% and 0.4wt%. The optimal photoelectric conversion efficiency (PCE) of 6.65% was achieved at a Ti3C2Tx concentration of 0.2wt%, representing a 41.4% improvement compared with 4.70% conversion efficiency of pure ZnO films. The introduction of Ti3C2Tx facilitated electron transport and increased electron transfer pathways, which enhanced photoelectric performance. These findings highlight the potential of Ti3C2Tx based composite photoanode for advancing the efficiency of DSSC.

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The effect of substrate on enhancing the sensing properties of nitric oxide gas detection of MoS2 thin film

Korapati,

Kumari,

Kosuri

et al. 2024

emergent mater.

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MoS2 nanorods anchored reduced graphene oxide nanohybrids for electrochemical energy conversion applications

Cited by 11 publications

References 51 publications

Vertically Aligned Few-Layer Crumpled MoS₂ Hybrid Nanostructure on Porous Ni Foam toward Promising Binder-Free Methanol Electro-Oxidation Application

Vertically Aligned Few-Layer Crumpled MoS₂ Hybrid Nanostructure on Porous Ni Foam toward Promising Binder-Free Methanol Electro-Oxidation Application

ZnO/Ti₃C₂T_x composite photoanodes for efficient dye-sensitized solar cells

The effect of substrate on enhancing the sensing properties of nitric oxide gas detection of MoS2 thin film

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MoS2 nanorods anchored reduced graphene oxide nanohybrids for electrochemical energy conversion applications

Cited by 11 publications

References 51 publications

Vertically Aligned Few-Layer Crumpled MoS2 Hybrid Nanostructure on Porous Ni Foam toward Promising Binder-Free Methanol Electro-Oxidation Application

Vertically Aligned Few-Layer Crumpled MoS2 Hybrid Nanostructure on Porous Ni Foam toward Promising Binder-Free Methanol Electro-Oxidation Application

ZnO/Ti3C2T x composite photoanodes for efficient dye-sensitized solar cells

The effect of substrate on enhancing the sensing properties of nitric oxide gas detection of MoS2 thin film

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Product

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Vertically Aligned Few-Layer Crumpled MoS₂ Hybrid Nanostructure on Porous Ni Foam toward Promising Binder-Free Methanol Electro-Oxidation Application

Vertically Aligned Few-Layer Crumpled MoS₂ Hybrid Nanostructure on Porous Ni Foam toward Promising Binder-Free Methanol Electro-Oxidation Application

ZnO/Ti₃C₂T_x composite photoanodes for efficient dye-sensitized solar cells