Mesoporous carbon-based materials and their applications as non-precious metal electrocatalysts in the oxygen reduction reaction

Collins, Gillian; Kasturi, Palanisamy Rupa; Karthik, Raj; Shim, Jae‐Jin; Sukanya, Ramaraj; Breslin, Carmel B.

doi:10.1016/j.electacta.2022.141678

Cited by 6 publications

(4 citation statements)

References 232 publications

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“…The fabricated electrode stability was verified by using the chronoamperometry technique while progressively producing oxygen in 1 M KOH aqueous solution at a continuous potential equivalent to 10 mA cm –2 for NiCoO@FTO for 10 h. Figure b shows the stability consequence for FTO-based electrodes modified with binary-metal oxides. Electrocatalysts exhibited good stability in amperometric quantities, showing the durability of the fabricated amorphous electrocatalysts toward OER at a current density of 10 mAcm –2 , representing a good candidate for the electrocatalytic water oxidation reaction …”

Section: Resultsmentioning

confidence: 99%

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Fabrication of Efficient Electrocatalysts for Electrochemical Water Oxidation Using Bimetallic Oxides System

et al. 2023

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The study focused on the fabrication of nickel, cobalt, and their bimetallic oxide via a facile electrodeposition approach over the surface of conducting glass has been reported here. Fabricated electrodes have been employed as binder-free and effective anode materials toward oxygen evolution reactions (OER) in electrochemical water splitting at high pH. Nickel and cobalt oxides showed overpotential values of 520 mV and 536 mV at the current density of 10 mAcm −2 with charge transfer resistances of 170 and 195 Ω. For bimetallic oxides (NiCoO@FTO), the overpotential depressed up to 460 mV and lower charge transfer value of 80 Ω. Additionally, double-layer capacitance also boosted for the bimetallic oxide with a value of 199 μF as compared to monometallic nickel oxide (106 μF) and cobalt oxide (120 μF). Multimetal oxides of Ni−Co showed the best performance, which was further supported with larger electrochemical surface area. This facile approach toward the electrode fabrication could be a charming alternate to replace the Ru-and Ir-based expensive materials for OER in electrochemical water splitting.

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Section: Resultsmentioning

confidence: 99%

“…Electrocatalysts exhibited good stability in amperometric quantities, showing the durability of the fabricated amorphous electrocatalysts toward OER at a current density of 10 mAcm −2 , representing a good candidate for the electrocatalytic water oxidation reaction. 51…”

Section: Post Treatment Sem Analysismentioning

confidence: 99%

Fabrication of Efficient Electrocatalysts for Electrochemical Water Oxidation Using Bimetallic Oxides System

et al. 2023

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“…27 This process is crucial for improving the efficiency, selectivity, and stability of the HER, and enabling practical applications of hydrogen-based technologies such as fuel cells and water splitting. Some commonly studied electrocatalysts for the HER include transition metals, 55 carbon-based materials, 56 and metal chalcogenides. 57 Electrocatalysts performance is influenced by factors such as chemical composition, crystal structure, morphology, and surface area, as well as the operating conditions of the electrochemical cell.…”

Section: Metal Oxides Catalystsmentioning

confidence: 99%

Exploring metal oxides for the hydrogen evolution reaction (HER) in the field of nanotechnology

Danish

2023

RSC Sustain.

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“…In the investigations of electrocatalytic reactions, the discussion is often focused on the materials with high porosity and surface area 15 . Among the most familiar compounds in this field are the mesoporous and microporous materials 16 . Materials that exhibit these properties are known as metal–organic frameworks (MOFs) structures 14 , 17 , 18 .…”

Section: Introductionmentioning

confidence: 99%

A new method for the preparation of MgAl layered double hydroxide-copper metal–organic frameworks structures: application to electrocatalytic oxidation of formaldehyde

Habibi,

Pashazadeh,

Pashazadeh

et al. 2024

Sci Rep

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In this research, we present a novel design protocol for the in-situ synthesis of MgAl layered double hydroxide-copper metal–organic frameworks (LDH-MOFs) nanocomposite based on the electrocoagulation process and chemical method. The overall goal in this project is the primary synthesis of para-phthalic acid (PTA) intercalated MgAl-LDH with Cu (II) ions to produce the paddle-wheel like Cu-(PTA) MOFs nanocrystals on/in the MgAl-LDH structure. The physicochemical properties of final product; Cu-(PTA) MOFs/MgAl-LDH, were characterized by the surface analysis and chemical identification methods (SEM, EDX, TEM, XRD, BET, FTIR, CHN, DLS, etc.). The Cu-(PTA) MOFs/MgAl-LDH nanocomposite was used to modification of the carbon paste electrode (CPE); Cu-(PTA) MOFs/MgAl-LDH/CPE. The electrochemical performance of Cu-(PTA) MOFs/MgAl-LDH/CPE was demonstrated through the utilization of electrochemical methods. The results show a stable redox behavior of the Cu (III)/Cu (II) at the surface of Cu-(PTA) MOFs/MgAl-LDH/CPE in alkaline medium (aqueous 0.1 M NaOH electrolyte). Then, the Cu-(PTA) MOFs/MgAl-LDH/CPE was used as a new electrocatalyst toward the oxidation of formaldehyde (FA). Electrochemical data show that the Cu-(PTA) MOFs/MgAl-LDH/CPE exhibits superior electrocatalytic performance on the oxidation of FA. Also the diffusion coefficient, exchange current density (J°) and mean value of catalytic rate constant (Kcat) were found to be 1.18 × 10–6 cm2 s−1, 23 mA cm-2 and 0.4537 × 104 cm3 mol−1 s−1, respectively. In general, it can be said the Cu-(PTA) MOFs/MgAl-LDHs is promising candidate for applications in direct formaldehyde fuel cells.

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Mesoporous carbon-based materials and their applications as non-precious metal electrocatalysts in the oxygen reduction reaction

Cited by 6 publications

References 232 publications

Fabrication of Efficient Electrocatalysts for Electrochemical Water Oxidation Using Bimetallic Oxides System

Fabrication of Efficient Electrocatalysts for Electrochemical Water Oxidation Using Bimetallic Oxides System

Exploring metal oxides for the hydrogen evolution reaction (HER) in the field of nanotechnology

A new method for the preparation of MgAl layered double hydroxide-copper metal–organic frameworks structures: application to electrocatalytic oxidation of formaldehyde

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