Ni-MOF-based electrodes: A promising strategy for efficient overall water splitting

Dymerska, Anna; Środa, Bartosz; Zielińska, Beata; Mijowska, Ewa

doi:10.1016/j.electacta.2023.142725

Electrochimica Acta

2023

DOI: 10.1016/j.electacta.2023.142725

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Ni-MOF-based electrodes: A promising strategy for efficient overall water splitting

Anna Dymerska

Bartosz Środa

Beata Zielińska

et al.

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2024

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Cited by 8 publications

References 63 publications

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Electrochemically Created Active Centers in a Bimetallic CoNi‐Triazole Metal–Organic Framework for Enhanced Oxygen Evolution Reaction Activity

Phongsuk,

Adpakpang,

Pukdeejorhor

et al. 2024

ChemPlusChem

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Electrochemical water oxidation utilizing bimetallic CoNi‐Tz (Tz=1,2,4‐triazole) framework is explored. Initially, CoNi‐Tz possesses active tetrahedral Co center and electron‐mediated octahedral Ni chain. After performing an electrochemical activation, the partial structural transformation on the Ni center occurs. This leads to the generation of excessive active centers which can promote catalytic activity of the framework. The activated CoNi‐Tz catalyst displays a remarkably low OER overpotential of 293 mV at a current density of 10 mA cm−2 with a small Tafel slope of 49.98 mV dec−1, outperforming the single metal Co‐Tz and benchmark IrO2 catalysts.

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Electrochemically Created Active Centers in a Bimetallic CoNi‐Triazole Metal–Organic Framework for Enhanced Oxygen Evolution Reaction Activity

Phongsuk,

Adpakpang,

Pukdeejorhor

et al. 2024

ChemPlusChem

View full text Add to dashboard Cite

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Interface Engineering of Network‐Like 1D/2D (NHCNT/Ni─MOF) Hybrid Nanoarchitecture for Electrocatalytic Water Splitting

Bhosale,

Murugan,

Kim

et al. 2024

Small Methods

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Here, integrated functional components into a hybrid heterostructure via highly stabilized network‐like interconnected electronic nanoarchitecture of 1D N‐doped holey‐carbon nanotube (NHCNT) with 2D nickel─metal–organic framework (Ni─MOF) nanosheets are developed as high‐performance electrocatalyst for overall water splitting. The NHCNT promoting electron transport pathways in electrocatalyst, and formation of holes in nanotubes further enables excellent diffusion of ions for promoting the overall reaction rate. An excellent combination of 1D/2D structure of NHCNT/Ni─MOF‐4 electrocatalyst exhibits excellent oxygen evolution reaction (η10 = 207.8 mV, and Tafel = 62.6 mV dec−1) and reasonable hydrogen evolution reaction (η10 = 159.8 mV, and Tafel = 107.69 mV dec−1) activity with consistent and stable performance in a 1 m KOH. The highly interconnected network structure contains Ni2+ and Ni3+ species in the NHCNT/Ni─MOF‐4 electrocatalyst, which possesses high specific surface area (SSA) (235.53 m2 g−1), electrochemically active surface area (ECSA) (796.2 cm2), mass activity (4.76 mA mg−1), and turnover frequency (3.99 × 10−2 s−1), which provide remarkable electrocatalytic performance via generating synergy between the NHCNT and Ni─MOF. For overall water splitting, NHCNT/Ni─MOF‐4 attains a low cell voltage (1.77 V@10 mA cm−2).

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Catalytically Active Bimetallic Nickel–Cobalt MOF Linked Via Pyridine 2, 6-Dicarboxylate for Electrochemical Water Splitting Applications

Zahid,

Abdul Karim,

Khan

et al. 2024

Arab J Sci Eng

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Ni-MOF-based electrodes: A promising strategy for efficient overall water splitting

Cited by 8 publications

References 63 publications

Electrochemically Created Active Centers in a Bimetallic CoNi‐Triazole Metal–Organic Framework for Enhanced Oxygen Evolution Reaction Activity

Electrochemically Created Active Centers in a Bimetallic CoNi‐Triazole Metal–Organic Framework for Enhanced Oxygen Evolution Reaction Activity

Interface Engineering of Network‐Like 1D/2D (NHCNT/Ni─MOF) Hybrid Nanoarchitecture for Electrocatalytic Water Splitting

Catalytically Active Bimetallic Nickel–Cobalt MOF Linked Via Pyridine 2, 6-Dicarboxylate for Electrochemical Water Splitting Applications

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