Rapid synthesis of a CuZn-MOF <i>via</i> controlled electrodeposition: manifesting enhanced overall electrocatalytic water splitting

Aashi, _; Srinivasan, A.; Krishankant, .; Gaur, Ashish; Bera, Chandan; Bagchi, Vivek

doi:10.1039/d3se00595j

Sustainable Energy Fuels

2023

DOI: 10.1039/d3se00595j

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Rapid synthesis of a CuZn-MOF via controlled electrodeposition: manifesting enhanced overall electrocatalytic water splitting

_ Aashi¹,

A. Srinivasan²,

. Krishankant³

et al.

Abstract: The immense potential of metal–organic frameworks (MOFs) in electrocatalytic applications have resulted in an upsurge of interest in these materials. Herein we demonstrate the rapid electrodeposition of bimetallic MOF (CuZn-BTC-250)...

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Cited by 7 publications

(2 citation statements)

References 38 publications

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“…An analysis using powder X-ray diffraction (PXRD) and normalized PXRD was conducted to discern the crystal phase, as depicted in Figure a, and SI, Figure S1, respectively. The PXRD patterns of the MOF electrode are in line with our previously reported findings . Impressively, from the normalized PXRD pattern, it was observed that altering the laser power did not change the electrode’s crystal structure.…”

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confidence: 99%

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Laser-Induced Crafting of Modulated Structural Defects in MOF-Based Supercapacitor for Energy Storage Application

Aashi,

Rani,

Alagar

et al. 2024

ACS Materials Lett.

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Metal−organic frameworks (MOFs) have emerged as promising contenders in storage applications due to their unique properties. In this study, we synthesized CuZn-MOF-P x by meticulously adjusting the laser power during fabrication. This precise tuning substantially enhanced controlled defects and porosity, enhancing the electrode's surface area and specific capacitance. The optimized CuZn-MOF-P 7 electrode demonstrated a specific capacitance of 3.7 F cm −2 at 1 mA cm −2 current density. Furthermore, the electrode showed outstanding durability, holding onto 97% of its capacitance at 50 mA cm −2 after 16000 cycles. To demonstrate its practical utility, we engineered a planar hybrid supercapacitor (PHSC) employing CuZn-MOF-P 7 as the cathode and activated carbon (AC) as the anode. This configuration displayed 22.3 μWh cm −2 and 6.75 mW cm −2 of energy and power density, respectively, highlighting its efficiency and applicability. This work's significance lies in the innovative use of laser irradiated approach for improving the performance of MOF-based materials for energy storage devices.

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confidence: 99%

“…(Their corresponding line profiles are given in SI, Figure S3). These fringes correspond to the 222 (Figure e) and 220 (Figure f) planes of CuZn-MOF with d -spacing values of 0.209 and 0.218 nm, respectively . These fringes are not uniform in the region where the pores were created.…”

mentioning

confidence: 99%

Laser-Induced Crafting of Modulated Structural Defects in MOF-Based Supercapacitor for Energy Storage Application

Aashi,

Rani,

Alagar

et al. 2024

ACS Materials Lett.

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Ni Surface & Polyacryloyl Hydrazide Mediated Growth of Co₃O₄@NiCu Alloy Nanocuboids for Effective Methanol Oxidation and Oxygen Evolution Reactions

Semwal,

Samal,

Nayak

et al. 2024

Advanced Sustainable Systems

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Strategies to control the size, shape, and lattice arrangement, introduce doping agents, and induce heterostructuring in electrocatalysts are strongly desirable to tailor their activities. Herewith, a one‐pot strategy utilizing polyacryloyl hydrazide (PAHz) as the composition directing agent and metallic Ni surface as the shape directing agent is employed to grow Co3O4 doped NiCu alloy nanocuboids on Ni foam (NF) under hydrothermal conditions for electrocatalytic H2 production. The resulting bi‐functional electrodes are suitable for methanol oxidation reaction (MOR) coupled green H2 production with effective energy efficiency. The low overall potential (MOR+HER) of 1.78 V to realize the current density (j) value of 100 mA cm−2 and extended durability (100 h@10 mA cm−2) along with the selective conversion of methanol to formate support the viability of the NF‐PAHz‐Co3O4@NiCu for the said operation. The electrode also displays efficacy toward oxygen evolution reaction (OER) activity and jOER value of 100 mA cm−2 is realized at a potential value of 1.65 VRHE with adequate durability. Overall, the synthetic strategy is general, scalable and may be extended to grow other metal oxide doped alloy nanostructures in the future.

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Unveiling the Potential of Metal–Organic Frameworks: Nucleation-Induced Strain Activating Electrocatalytic Water Splitting

Aashi,

Chaudhuri,

Krishankant

et al. 2024

ACS Sustainable Chem. Eng.

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Metal−organic frameworks (MOFs) exhibit immense potential, provided that we gain a comprehensive understanding of their nature and manipulate the factors to which they respond. Herein, the MOF is engineered and activated by introducing strain into the morphology through a suitable nucleation process. The defect-rich N-reduced graphene oxide (rGO) plays a pivotal role, serving as an uneven platform and tagging the nucleation site for MOF growth on its surface, resulting in a highly active electrocatalyst. The presence of dislocation strain and defects in the catalyst creates new active sites or modifies existing ones on its surface, potentially amplifying its catalytic activity. The catalyst showed excellent activity toward oxygen evolution reaction and hydrogen evolution reaction with a low overpotential of 145 and 51 mV to drive a current density of 10 mA cm −2 . Additionally, the catalyst toward the overall water-splitting reaction displayed a cell voltage of 1.37 V at 10 mA cm −2 and maintained a high current density of 150 mA cm −2 for 200 h without significant degradation. Combining dislocation engineering with other catalytic strategies leads to synergistic effects that amplify the activity. Molecular dynamics simulations also show that introducing N-rGO in FeCo-MOF induces the strain and enhances its activity.

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Rapid synthesis of a CuZn-MOF via controlled electrodeposition: manifesting enhanced overall electrocatalytic water splitting

Abstract: The immense potential of metal–organic frameworks (MOFs) in electrocatalytic applications have resulted in an upsurge of interest in these materials. Herein we demonstrate the rapid electrodeposition of bimetallic MOF (CuZn-BTC-250)...

Cited by 7 publications

References 38 publications

Laser-Induced Crafting of Modulated Structural Defects in MOF-Based Supercapacitor for Energy Storage Application

Laser-Induced Crafting of Modulated Structural Defects in MOF-Based Supercapacitor for Energy Storage Application

Ni Surface & Polyacryloyl Hydrazide Mediated Growth of Co₃O₄@NiCu Alloy Nanocuboids for Effective Methanol Oxidation and Oxygen Evolution Reactions

Unveiling the Potential of Metal–Organic Frameworks: Nucleation-Induced Strain Activating Electrocatalytic Water Splitting

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Rapid synthesis of a CuZn-MOF via controlled electrodeposition: manifesting enhanced overall electrocatalytic water splitting

Abstract: The immense potential of metal–organic frameworks (MOFs) in electrocatalytic applications have resulted in an upsurge of interest in these materials. Herein we demonstrate the rapid electrodeposition of bimetallic MOF (CuZn-BTC-250)...

Cited by 7 publications

References 38 publications

Laser-Induced Crafting of Modulated Structural Defects in MOF-Based Supercapacitor for Energy Storage Application

Laser-Induced Crafting of Modulated Structural Defects in MOF-Based Supercapacitor for Energy Storage Application

Ni Surface & Polyacryloyl Hydrazide Mediated Growth of Co3O4@NiCu Alloy Nanocuboids for Effective Methanol Oxidation and Oxygen Evolution Reactions

Unveiling the Potential of Metal–Organic Frameworks: Nucleation-Induced Strain Activating Electrocatalytic Water Splitting

Contact Info

Product

Resources

About

Ni Surface & Polyacryloyl Hydrazide Mediated Growth of Co₃O₄@NiCu Alloy Nanocuboids for Effective Methanol Oxidation and Oxygen Evolution Reactions