Trimetallic CoFeCr-LDH@MoS2 as a highly efficient bifunctional electrocatalyst for overall water splitting

Chen, Shuang; Zhang, Yekai; Zhong, Hong; Cao, Zhanfang

doi:10.1016/j.colsurfa.2022.130146

Cited by 9 publications

(2 citation statements)

References 36 publications

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“…25 Chen et al have synthesized a composite of trimetallic CoFeCr LDHs with MoS 2 for increasing the electrical conductivity for HER and OER with the help of hydrothermal and co-precipitation methods. 26 Liu et al had discussed the hydrothermally synthesized threedimensional NiCo 2 S 4 @NiFe LDH heterostructures on nickel foam for the improvisation of overall water splitting reactions. 27 The co-precipitation method is popular for synthesizing LDHs, but it results in large aggregated particles that impact water splitting reactions.…”

Section: Introductionmentioning

confidence: 99%

“…Zhang et al have studied the interface engineering of MoS 2 with nickel sulfide for the enhancement of electrochemical water splitting reactions . Chen et al have synthesized a composite of trimetallic CoFeCr LDHs with MoS 2 for increasing the electrical conductivity for HER and OER with the help of hydrothermal and co-precipitation methods . Liu et al had discussed the hydrothermally synthesized three-dimensional NiCo 2 S 4 @NiFe LDH heterostructures on nickel foam for the improvisation of overall water splitting reactions …”

Section: Introductionmentioning

confidence: 99%

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Enhancement of Hydrogen and Oxygen Evolution Reaction Efficiencies by Coupling a MoS₂ Nanoflower with a CoMnCr LDH Nanocube on Nickel Foam

Vedanarayanan,

Mathur Gopalakrishnan

2023

Energy Fuels

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The development of highly efficient and durable bifunctional electrocatalysts for the electrolysis of water has become crucial for the advancement of renewable energy systems. In this work, CoMnCr LDH@MoS2/NF, a highly efficient bifunctional electrocatalyst, was developed by combining a CoMnCr LDH nanocube with a MoS2 nanoflower drop-casted on nickel foam to facilitate both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The resulting CoMnCr LDH@MoS2/NF demonstrated exceptionally good electrocatalytic performance in an alkaline environment, with low overpotentials of only 221 and 229 mV required to achieve a current density of 10 mA·cm–2 for HER and OER, respectively. These results were attributed to the MoS2 nanoflower present in between the layers of the CoMnCr LDH nanocube acting as an electron carrier. This enhances the intrinsic activity and provides a considerable specific surface area. The findings of this study propose that the employment of CoMnCr LDH@MoS2/NF offers a valuable approach for investigating high-performance electrocatalysts that exhibit enhanced stability.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancement of Hydrogen and Oxygen Evolution Reaction Efficiencies by Coupling a MoS₂ Nanoflower with a CoMnCr LDH Nanocube on Nickel Foam

Vedanarayanan,

Mathur Gopalakrishnan

2023

Energy Fuels

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Synergistic Effect of Ternary CoFeCr‐LDH and MXene on Enhancing Flame Retardant and Smoke Inhibition Properties of TPU Composites

Liu,

Xiong,

et al. 2024

Journal of Polymer Science

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Both Layered Double Hydroxide (LDH) and MXene are two‐dimensional layered materials recognized for their remarkable flame‐retardant properties. Combining these materials enhances the fabrication of high‐performance flame retardants. In this work, a ternary CoFeCr‐LDH@MXene hybrid material was synthesized via a facile hydrothermal method, effectively mitigating heat release, smoke generation, and toxic gas emissions during the combustion of Thermoplastic Polyurethane (TPU). Compared to pristine TPU, the composite material TPU/2wt%CoFeCr‐LDH@MXene demonstrated reductions in peak heat release rate (pHRR) by 39.4%, total heat release (THR) by 28.3%, peak smoke production rate (pSPR) by 61.1%, total smoke production (TSP) by 31.3%, and peak carbon monoxide release rate (pCO) by 56.7%. The study revealed that the CoFeCr‐LDH@MXene hybrid not only catalyzes the formation of a high‐quality char layer but also facilitates the conversion of harmful gases into CO2. This research provides insights into the development of efficient ternary LDH@MXene flame retardants and TPU composites with significantly enhanced fire safety.

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Partial Selenization Strategy for Fabrication of Ni_0.85Se@NiCr‐LDH Heterostructure as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Nitika,

Dutta

2024

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NiCr‐LDH and its partial selenization as Ni0.85Se@NiCr‐LDH heterostructure is established here as an alkaline water electrolyzer for achieving enhanced overall water splitting efficiency. The hydrothermally synthesized optimized batch of Ni0.85Se@NiCr‐LDH is thoroughly characterized to elucidate its structure, morphology, and composition. Compared to pristine NiCr‐LDH, the batch of Ni0.85Se@NiCr‐LDH exhibits exceptional alkaline OER and HER activity with low overpotentials of 258 and 85 mV at 10 mA cm−2, respectively. Besides, Ni0.85Se@NiCr‐LDH also exhibits excellent acidic HER with an overpotential of only 61 mV at 10 mA cm−2, indicating that Ni0.85Se@NiCr‐LDH can operate effectively across a wide pH range. The excellent electrochemical stability of Ni0.85Se@NiCr‐LDH for 24 h operation is attributed to the formation of a thin layer of SeOx during OER operation. The role of selenization and the effect of Cr in the LDH lattice toward enhanced electrocatalytic water splitting is discussed. The outstanding OER and HER performances of Ni0.85Se@NiCr‐LDH are attributed to the higher electrochemical active surface area, favorable conditions for adsorption of HER/OER intermediates, low charge transfer resistance, and improved conductivity. The practical application of Ni0.85Se@NiCr‐LDH as a bifunctional electrocatalyst for overall water splitting is reflected from the low cell voltage of 1.548 V at 10 mA cm−2.

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Trimetallic CoFeCr-LDH@MoS2 as a highly efficient bifunctional electrocatalyst for overall water splitting

Cited by 9 publications

References 36 publications

Enhancement of Hydrogen and Oxygen Evolution Reaction Efficiencies by Coupling a MoS₂ Nanoflower with a CoMnCr LDH Nanocube on Nickel Foam

Enhancement of Hydrogen and Oxygen Evolution Reaction Efficiencies by Coupling a MoS₂ Nanoflower with a CoMnCr LDH Nanocube on Nickel Foam

Synergistic Effect of Ternary CoFeCr‐LDH and MXene on Enhancing Flame Retardant and Smoke Inhibition Properties of TPU Composites

Partial Selenization Strategy for Fabrication of Ni_0.85Se@NiCr‐LDH Heterostructure as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

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Trimetallic CoFeCr-LDH@MoS2 as a highly efficient bifunctional electrocatalyst for overall water splitting

Cited by 9 publications

References 36 publications

Enhancement of Hydrogen and Oxygen Evolution Reaction Efficiencies by Coupling a MoS2 Nanoflower with a CoMnCr LDH Nanocube on Nickel Foam

Enhancement of Hydrogen and Oxygen Evolution Reaction Efficiencies by Coupling a MoS2 Nanoflower with a CoMnCr LDH Nanocube on Nickel Foam

Synergistic Effect of Ternary CoFeCr‐LDH and MXene on Enhancing Flame Retardant and Smoke Inhibition Properties of TPU Composites

Partial Selenization Strategy for Fabrication of Ni0.85Se@NiCr‐LDH Heterostructure as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

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Resources

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Enhancement of Hydrogen and Oxygen Evolution Reaction Efficiencies by Coupling a MoS₂ Nanoflower with a CoMnCr LDH Nanocube on Nickel Foam

Enhancement of Hydrogen and Oxygen Evolution Reaction Efficiencies by Coupling a MoS₂ Nanoflower with a CoMnCr LDH Nanocube on Nickel Foam

Partial Selenization Strategy for Fabrication of Ni_0.85Se@NiCr‐LDH Heterostructure as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting