MWCNT-modified MXene as cost-effective efficient bifunctional catalyst for overall water splitting

Zahra, Syedah Afsheen; Rizwan, Syed

doi:10.1039/d2ra00868h

Cited by 35 publications

(15 citation statements)

References 80 publications

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“…Obviously, the electrocatalytic properties of TS (24) -P (50) -V 2 C are much better than those of TS (18) -P (50) -V 2 C, TS (30) -P (50) -V 2 C, P (50) -V 2 C, V 2 C-MXene, and Ni-foam (Figure a); the improved OER activity of TS (24) -P (50) -V 2 C may be ascribed to the microscopic pores and lattice tensile strain induced by the heterostructure, which could offer rich accessible active sites . TS (24) -P (50) -V 2 C demonstrates an enhanced OER behavior compared with related reports such as those for NFPS@MXene (282 mV), NiFe 2 O 4 /Ti 3 C 2 (266 mV), NiCoS/Ti 3 C 2 T x (365 mV), Ru-SA/Ti 3 C 2 T x (290 mV), and MWCNT-MXene (290 mV) (Figure S6). Moreover, TS (24) -P (50) -V 2 C still delivers the best OER performance at the current densities of 20 and 100 mA/cm 2 (η20 = 321 mV, η100 = 531 mV), lower than those of TS (18) -P (50) -V 2 C (η20 = 351 mV, η100 = 581 mV), TS (30) -P (50) -V 2 C (η20 = 372 mV, η100 = 671 mV), P (50) -V 2 C (η20 = 551 mV, η100 = 731 mV), and V 2 C-MXene (η20 = 571 mV, η100 = 741 mV).…”

Section: Resultsmentioning

confidence: 94%

Novel Strain Engineering Combined with a Microscopic Pore Synergistic Modulated Strategy for Designing Lattice Tensile-Strained Porous V₂C-MXene for High-Performance Overall Water Splitting

Zhou

Guo

et al. 2023

ACS Appl. Mater. Interfaces

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Transition metal carbon/nitride (MXene) holds immense potential as an innovative electrocatalyst for enhancing the overall water splitting properties. Nevertheless, the re-stacking nature induced by van der Waals force remains a significant challenge. In this work, the lattice tensile-strained porous V 2 C-MXene (named as TS (24) -P (50) -V 2 C) is successfully constructed via the rapid spray freezing method and the following hydrothermal treatment. Besides, the influence of lattice strain degree and microscopic pores on the catalytic ability is reviewed and explored systematically. The lattice tensile strain within V 2 C-MXene could widen the interlayer spacing and accelerate the ion transfer. The microscopic pores could change the ion transmission path and shorten the migration distance. As a consequence, the obtained TS (24) -P (50) -V 2 C shows extraordinary hydrogen evolution reaction and oxygen evolution reaction activity with the overpotential of 154 and 269 mV, respectively, at the current density of 10 mA/cm 2 , which is quite remarkable compared to the MXene-based electrocatalysts. Moreover, the overall water splitting device assembled using TS (24) -P (50) -V 2 C as both anode and cathode demonstrates a low cell voltage requirement of 1.57 V to obtain 10 mA/cm 2 . Overall, the implementation of this work could offer an exciting avenue to overcome the re-stacking issue of V 2 C-MXene, affording a highefficiency electrocatalyst with superior catalytic activity and desirable reaction kinetics.

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Section: Resultsmentioning

confidence: 94%

Novel Strain Engineering Combined with a Microscopic Pore Synergistic Modulated Strategy for Designing Lattice Tensile-Strained Porous V₂C-MXene for High-Performance Overall Water Splitting

Zhou

Guo

et al. 2023

ACS Appl. Mater. Interfaces

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“…7b shows the variations in the OER overpotentials of various metal oxide-based catalysts in the literature compared with the prepared composite catalysts. 48,52,55–58…”

Section: Resultsmentioning

confidence: 99%

“…7b shows the variations in the OER overpotentials of various metal oxide-based catalysts in the literature compared with the prepared composite catalysts. 48,52,[55][56][57][58] To investigate the intrinsic behavior of the assembled electrocatalysts, the OER Tafel lines for RuO 2 , MXene, Co 3 O 4 , Fe 3 O 4 , MXene/Fe 3 O 4 and MXene/Co 3 O 4 were plotted, as shown in Fig. 7c.…”

Section: Structural Studiesmentioning

confidence: 99%

Spinel-structured metal oxide-embedded MXene nanocomposites for efficient water splitting reactions

Vikraman

Hussain

Liu

et al. 2022

Inorg. Chem. Front.

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“…Currently, most MXene are only investigated as HER or OER catalysts, and bifunctional catalysts are being explored gradually [136–137] . Heteroatom doping can improve the activity and electrocatalytic performance of MXene‐based HER and OER catalysts.…”

Section: Progress In Design Of New Green Catalysts Based On Mxene Mat...mentioning

confidence: 99%

MXene‐based Materials for Water Splitting: Synthesis and Modification

Dong

et al. 2023

Chemistry An Asian Journal

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With abundant metal site and tunable electronic structure, MXene is considered as a promising electrocatalyst for the conversion of energy molecules. In this review, the latest research progress on inexpensive MXene-based catalysts for water electrolysis is summarized. Typical preparation and modification methods and their advantages and disadvantages are briefly discussed, with a focus on the regulation and design of the surface interface electronic states, which improve the electrocatalytic performance of MXene-based materials. The main strategies for the electronic state modification include end-group modification, heteroatom doping, and heterostructure construction. Some limitations of MXene-based materials, which should be considered in the rational design of advanced MXene-based electrocatalyst, are also discussed. Finally, prospects for the rational design of Mxene-based electrocatalysts is proposed.

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MWCNT-modified MXene as cost-effective efficient bifunctional catalyst for overall water splitting

Abstract: Utilization of cost-effective, bifunctional, and efficient electrocatalysts for complete water splitting is desirable for sustainable clean hydrogen energy.

Cited by 35 publications

References 80 publications

Novel Strain Engineering Combined with a Microscopic Pore Synergistic Modulated Strategy for Designing Lattice Tensile-Strained Porous V₂C-MXene for High-Performance Overall Water Splitting

Novel Strain Engineering Combined with a Microscopic Pore Synergistic Modulated Strategy for Designing Lattice Tensile-Strained Porous V₂C-MXene for High-Performance Overall Water Splitting

Spinel-structured metal oxide-embedded MXene nanocomposites for efficient water splitting reactions

MXene‐based Materials for Water Splitting: Synthesis and Modification

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MWCNT-modified MXene as cost-effective efficient bifunctional catalyst for overall water splitting

Abstract: Utilization of cost-effective, bifunctional, and efficient electrocatalysts for complete water splitting is desirable for sustainable clean hydrogen energy.

Cited by 35 publications

References 80 publications

Novel Strain Engineering Combined with a Microscopic Pore Synergistic Modulated Strategy for Designing Lattice Tensile-Strained Porous V2C-MXene for High-Performance Overall Water Splitting

Novel Strain Engineering Combined with a Microscopic Pore Synergistic Modulated Strategy for Designing Lattice Tensile-Strained Porous V2C-MXene for High-Performance Overall Water Splitting

Spinel-structured metal oxide-embedded MXene nanocomposites for efficient water splitting reactions

MXene‐based Materials for Water Splitting: Synthesis and Modification

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Novel Strain Engineering Combined with a Microscopic Pore Synergistic Modulated Strategy for Designing Lattice Tensile-Strained Porous V₂C-MXene for High-Performance Overall Water Splitting

Novel Strain Engineering Combined with a Microscopic Pore Synergistic Modulated Strategy for Designing Lattice Tensile-Strained Porous V₂C-MXene for High-Performance Overall Water Splitting