Efficient electrochemical water splitting using copper molybdenum sulfide anchored Ni foam as a high-performance bifunctional catalyst

Sajeev, Aparna; Mariappan, Vimal Kumar; Kesavan, Dhanasekar; Krishnamoorthy, Karthikeyan; Kim, Sang‐Jae

doi:10.1039/d0ma00688b

Cited by 14 publications

(14 citation statements)

References 51 publications

(30 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Herein, we have developed P-doped and intercalated metallic (1T) copper molybdenum sulfide (P-1T-CMS) ultrathin nanosheet structures as a superior bifunctional electrocatalyst for low-potential overall water splitting. Previous reports showed that 2H-CMS bulk crystals have good EWS catalytical efficiency because of their crystallographic robustness with active edges and low hydrogen adsorption free energy, whereas bulk 2H-MoS 2 remains inert for EWS. ,− However, the nanostructures of 1T-CMS have not been investigated for EWS so far. We took the challenge for the first time in this report to fabricate stable P-doped and intercalated 1T-CMS nanostructures on carbon cloth (CC) and investigated their catalytic EWS efficacy.…”

Section: Introductionmentioning

confidence: 99%

Bifunctional P-Intercalated and Doped Metallic (1T)-Copper Molybdenum Sulfide Ultrathin 2D-Nanosheets with Enlarged Interlayers for Efficient Overall Water Splitting

Gudal

Pan

Paudel

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Metallic (1T) molybdenum disulfide (MoS 2 ) is a much better electrocatalyst than the semiconducting (2H) MoS 2 because of its superior conductivity, presence of active basal planes, and bulky interlayers. However, the lack of thermodynamic stability has hindered its practical uses. The insertion of transition metals and nonmetals in the interlayers and the crystal is known to improve both the thermodynamic stability and the catalytic efficacy of 1T-MoS 2 . In this study, for the first time we have developed an electrocatalyst for water splitting based on metallic copper molybdenum sulfide (1T-CMS). The present catalyst, P-doped and intercalated 1T-CMS ultrathin 2D nanosheets on carbon cloth (P-1T-CMS@CC), demonstrates excellent catalytic efficacy for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). It required an overpotential of 95 mV for HER and of 284 mV for OER at a current density of 10 mA cm −2 . The P-1T-CMS@CC(+ −) device also shows excellent performance, requiring a cell voltage of only 1.51 V at a current density of 10 mA cm −2 .

show abstract

Section: Introductionmentioning

confidence: 99%

Bifunctional P-Intercalated and Doped Metallic (1T)-Copper Molybdenum Sulfide Ultrathin 2D-Nanosheets with Enlarged Interlayers for Efficient Overall Water Splitting

Gudal

Pan

Paudel

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…The depletion of fossil energy resources coupled with the adverse effects of environmental pollution has enforced researchers to find a pollutant-free clean energy source. Electrocatalytic water splitting has emerged as a clean hydrogen-energy production method compared to steam-reforming natural gas and gasification of coal. − The electrocatalytic water splitting consists of two reactions, hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). − In an electrochemical cell, reduction occurs at the cathode where hydrogen evolution reactions occur (HER) and oxidation occurs at the anode where oxygen evolution reactions occur (OER). The equilibrium potentials for HERs and OERs are 0 and 1.23 V, respectively; however, we need some extra potential (overpotential) to split water due to sluggish reaction kinetics at the electrodes. − It is highly essential to find a novel catalyst to accelerate the reaction rate at both the anode and cathode by promoting the charge transfer at the electrode–electrolyte interface.…”

Section: Introductionmentioning

confidence: 99%

Djurleite Copper Sulfide-Coupled Cobalt Sulfide Interface for a Stable and Efficient Electrocatalyst

Manivelan

Senthil

Prabakar

2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Transition metal sulfides (TMS) exhibit proliferated edge sites, facile electrode kinetics, and improved intrinsic electrical conductivity, which demand low potential requirements for total water splitting application. Here, we have propounded copper sulfide-coupled cobalt sulfide nanosheets grown on 3D nickel as an electrocatalyst for hydrogen (HER) and oxygen evolution (OER) reactions. The formation of djurleite copper sulfide with a Cu vacancy enables faster H+ ion transport and shows improved HER activity with a remarkably lower overpotential of 164 mV at 10 mA/cm2, whereas cobalt-incorporated copper sulfide undergoes cation exchange during synthesis and shows elevated OER activity with a lower overpotential of 240 mV at 10 mA/cm2 for the OER. Moreover, Cu2–x S/Co is said to have a hybrid CoS–CoS2 interface and provide Co2+ active sites on the surface and enable the fast adsorption of intermediate species (OH*, O*, and OOH*), which lowers the potential requirement. The copper vacancy and cation exchange with a hybrid CoS–CoS2 structure are helpful in supplying more surface reactive species and faster ion transport for the HER and OER, respectively. The full-cell electrolyzer requires a very low potential of 1.58 V to attain a current density of 10 mA/cm2, and it shows excellent stability for 50 h at 100 mA/cm2 as confirmed by the chronopotentiometry test.

show abstract

“…For instance, copper molybdenum sulfide nanostructures anchored Ni foam has been demonstrated to act as bifunctional catalyst for overall water splitting. [ 28 ] Additionally, g‐C 3 N 4 nanosheets modified with Cu 2 MoS 4 have been utilized as efficient cocatalyst for photocatalytic water splitting under visible‐light illumination. [ 29 ] Another composite, namely, Ce‐MOF/Cu 2 MoS 4 , exhibited superior HER activity.…”

Section: Introductionmentioning

confidence: 99%

Ternary copper molybdenum sulfide (Cu₂MoS₄) nanoparticles anchored on PANI/rGO as electrocatalysts for oxygen evolution reaction (OER)

Singh

Kociok‐Köhn

et al. 2022

Applied Organom Chemis

View full text Add to dashboard Cite

A trinuclear heterobimetallic complex with general formula [Cu(PPh 3 ) S 2 MoS 2 Cu(PPh 3 ) 2 ]ÁCHCl 3 (SSP) has been synthesized, and its characterization executed using FTIR, NMR, electronic absorption spectroscopies, and singlecrystal X-ray technique. The complex is solvothermally decomposed in octadecylamine (ODA) to yield ternary copper molybdenum sulfide nanoparticles and successfully grafted onto 2D materials, namely, reduced graphene oxide (rGO) or polyaniline (PANI), and these composites are utilized for oxygen evolution half-cell reaction (OER). The copper molybdenum sulfide nanoparticles as well as their composites with rGO and PANI and rGO + PANI were characterized using powder X-ray diffraction, SEM, and EDX analyses. Electrochemical measurements suggested that the modified electrodes have notable electrocatalytic activity toward OER with onset overpotential 400 mV for CMS + PANI and 395 mV for CMS + rGO + PANI. This is the first study on the use of copper molybdenum sulfide nanoparticles composites with rGO and PANI as electrocatalysts for OER displaying substantial synergistic activity.

show abstract

Efficient electrochemical water splitting using copper molybdenum sulfide anchored Ni foam as a high-performance bifunctional catalyst

Abstract: A self-powered water electrolyzer system was constructed via integration of a solar cell with the fabricated CMS/Ni electrolyzer (acts as both anode (OER) and cathode (HER), which demonstrated potential application towards next-generation energy conversion and management systems.

Cited by 14 publications

References 51 publications

Bifunctional P-Intercalated and Doped Metallic (1T)-Copper Molybdenum Sulfide Ultrathin 2D-Nanosheets with Enlarged Interlayers for Efficient Overall Water Splitting

Bifunctional P-Intercalated and Doped Metallic (1T)-Copper Molybdenum Sulfide Ultrathin 2D-Nanosheets with Enlarged Interlayers for Efficient Overall Water Splitting

Djurleite Copper Sulfide-Coupled Cobalt Sulfide Interface for a Stable and Efficient Electrocatalyst

Ternary copper molybdenum sulfide (Cu₂MoS₄) nanoparticles anchored on PANI/rGO as electrocatalysts for oxygen evolution reaction (OER)

Contact Info

Product

Resources

About

Efficient electrochemical water splitting using copper molybdenum sulfide anchored Ni foam as a high-performance bifunctional catalyst

Abstract: A self-powered water electrolyzer system was constructed via integration of a solar cell with the fabricated CMS/Ni electrolyzer (acts as both anode (OER) and cathode (HER), which demonstrated potential application towards next-generation energy conversion and management systems.

Cited by 14 publications

References 51 publications

Bifunctional P-Intercalated and Doped Metallic (1T)-Copper Molybdenum Sulfide Ultrathin 2D-Nanosheets with Enlarged Interlayers for Efficient Overall Water Splitting

Bifunctional P-Intercalated and Doped Metallic (1T)-Copper Molybdenum Sulfide Ultrathin 2D-Nanosheets with Enlarged Interlayers for Efficient Overall Water Splitting

Djurleite Copper Sulfide-Coupled Cobalt Sulfide Interface for a Stable and Efficient Electrocatalyst

Ternary copper molybdenum sulfide (Cu2MoS4) nanoparticles anchored on PANI/rGO as electrocatalysts for oxygen evolution reaction (OER)

Contact Info

Product

Resources

About

Ternary copper molybdenum sulfide (Cu₂MoS₄) nanoparticles anchored on PANI/rGO as electrocatalysts for oxygen evolution reaction (OER)