Cobalt metal–organic framework derived cobalt–nitrogen–carbon material for overall water splitting and supercapacitor

Gupta, Anjali; Allison, Cassia A.; Ellis, Madeline E.; Choi, Jonghyun; Davis, Allen; Srivastava, Rishabh; Souza, Felipe M. de; Neupane, Dipesh; Mishra, Sanjay R.; Pérez, Felio; Kumar, Anuj; Gupta, Ram K.; Dawsey, Tim

doi:10.1016/j.ijhydene.2022.11.340

Cited by 18 publications

(8 citation statements)

References 82 publications

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“…The binding energy at 532.4 eV corresponds to the surface-adsorbed H 2 O, while the peak at 529.4 eV is indicative of the M–O bond characteristic . Two evident peaks at 780.6 eV (Co 2p 3/2 ) and 796.5 eV (Co 2p 1/2 ) and two small peaks at 779.4 and 795.6 eV [Co(0)] of the Co 2p XPS spectrum are the typical characteristics of Co 2+ and Co(0) species, respectively (Figure g). , Four fitting peaks of the deconvoluted XPS spectrum for C 1s located at 282.7, 285.6, 288.2, and 286.4 eV correspond to C–C/CC, CN, carboxyl, and carbonyl, respectively (Figure h), − and two peaks of the high-resolution N 1s spectrum appeared at 395.6 and 397.6 eV corresponding to pyridinic N and Co–N (Figure i). , …”

Section: Resultsmentioning

confidence: 98%

In Situ-Generated Hollow CoFe-LDH/Co-MOF Heterostructure Nanorod Arrays for Oxygen Evolution Reaction

Yang,

Song,

Han

et al. 2024

Inorg. Chem.

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Assembling a heterostructure is an effective strategy for enhancing the electrocatalytic activity of hybrid materials. Herein, CoFe-layered double hydroxide and Co-metal−organic framework (CoFe-LDH/Co-MOF) hollow heterostructure nanorod arrays are synthesized. First, [Co(DIPL)(H 3 BTC)-(H 2 O) 2 ] n [named as Co-MOF, DIPL = 2,6-di(pyrid-4-yl)-4-phenylpyridine, H 3 BTC = 1,3,5-benzenetricarboxylic acid] crystalline materials with a uniform hollow structure were prepared on the nickel foam. The CoFe-LDH/Co-MOF composite perfectly inherits the original hollow nanorod array morphology after the subsequent electrodeposition process. Optimized CoFe-LDH/Co-MOF hollow heterostructure nanorod arrays display excellent performance in oxygen evolution reaction (OER) with ultralow overpotentials of 215 mV to deliver current densities of 10 mA cm −2 and maintain the electrocatalytic activity for a duration as long as 220 h, ranking it one of the non-noble metal-based electrocatalysts for OER. Density functional theory calculations validate the reduction in free energy for the rate-determining step by the synergistic effect of Co-MOF and CoFe-LDH, with the increased charge density and noticeable electron transfer at the Co−O site, which highlights the capability of Co-MOF to finely adjust the electronic structure and facilitate the creation of active sites. This work establishes an experimental and theoretical basis for promoting efficient water splitting through the design of heterostructures in catalysts.

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Section: Resultsmentioning

confidence: 98%

In Situ-Generated Hollow CoFe-LDH/Co-MOF Heterostructure Nanorod Arrays for Oxygen Evolution Reaction

Yang,

Song,

Han

et al. 2024

Inorg. Chem.

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“…The optimized Co-Fe-C moieties derived therefrom showed excellent performance for HER as well as OER at lower overpotential, i.e., 370 mV and 75 mV respectively. 95 Furthermore, Che et al conducted research on a 3D carbonaceous Ni 2 P nanosphere formed via interfacial engineering using Ni-BTC MOF. The synthesis of Ni 2 P@C/NP involved carbonization, phosphatization, and in situ growth of Ni-BTC MOF on a nickel foam substrate.…”

Section: Insights On Mofs and Applicationsmentioning

confidence: 99%

Nanoporous Metal/Covalent Organic Framework-Based Electrocatalysts for Water Splitting

Shah,

Iftikhar

2024

ACS Appl. Nano Mater.

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In today's technological era, the increased consumption of fossil fuels has taken a severe toll on the environment. In response to this, researchers are actively pursuing to develop efficient methods such as water splitting to obtain cleaner fuel and mitigate the adverse effects on the environment. However, the reactions involved in this process are sluggish. In order to enhance the reaction rate, scientists have been exploring efficient catalysts with long-term durability and stability and the ability to facilitate the kinetics of the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). Furthermore, due to the instability, high cost, and scarcity of noble-metal-based catalysts, researchers have shifted their focus to nanoporous-based metal−organic framework (MOF) and covalent organic framework (COF) catalysts, which not only offer enhanced stability but also contribute to increased conductivity, a crucial factor for materials used in water-splitting processes. Certain MOFs have been found to surpass platinum-and iridium-based catalysts in water catalysis. COFs also enhance OER and HER kinetics due to their large surface area, porosity, and excellent electrical conductivity, establishing them as valuable electrocatalysts in diverse applications. This Review provides a comprehensive investigation of electrocatalysts based on MOFs and COFs, encompassing their classification and synthetic pathways, with a special emphasis on their HER/OER performance. It also delves into intricate aspects such as structure−property correlations and nanostructure engineering, offering a comprehensive understanding of these materials in the context of electrocatalysis. Moreover, some of these catalysts exhibit notable efficiency for OER while others demonstrate proficiency for HER, which showcases their versatile electrocatalytic capabilities. Additionally, this Review sheds light on the future challenges confronting water splitting and engages in a discourse on potential solutions.

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“…As electroactive catalysts for the HER, cobalt-based MOFs have been widely utilized. Gupta et al 69 used a precipitation approach to create a Co-MOF, and they fine-tuned its electrochemical characteristics by subjecting it to pyrolysis at different temperatures. The Co-MOF-700, which was optimized, displayed outstanding HER activity with a slight overpotential of 75 mV and low Tafel slopes of 118 mV•dec −1 (Figure 7).…”

Section: Cobalt-based Mof Derivativesmentioning

confidence: 99%

Advances and Outlook of Metal–Organic Frameworks as High-Performance Electrocatalysts for Hydrogen Evolution Reaction: A Minireview

El Hanafi,

BaQais,

Saadi

et al. 2023

Energy Fuels

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The increasing demand for renewable energy technologies to safeguard the natural world has led to electrocatalysis’s emergence as a promising hydrogen generation method. Recently, metal–organic frameworks (MOFs) have attracted interest as electrocatalysts due to their unique characteristics, including expansive surface areas, exceptional porosity, and readily modifiable optical and electronic properties. This review comprehensively summarizes MOFs’ recent improvement in heterogeneous catalysis and their composites/derivatives for promoting the high efficiency of the hydrogen evolution reaction (HER). Furthermore, a profound assessment of the challenges and expectations for the development of MOF-based electrocatalysts is provided.

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Cobalt metal–organic framework derived cobalt–nitrogen–carbon material for overall water splitting and supercapacitor

Cited by 18 publications

References 82 publications

In Situ-Generated Hollow CoFe-LDH/Co-MOF Heterostructure Nanorod Arrays for Oxygen Evolution Reaction

In Situ-Generated Hollow CoFe-LDH/Co-MOF Heterostructure Nanorod Arrays for Oxygen Evolution Reaction

Nanoporous Metal/Covalent Organic Framework-Based Electrocatalysts for Water Splitting

Advances and Outlook of Metal–Organic Frameworks as High-Performance Electrocatalysts for Hydrogen Evolution Reaction: A Minireview

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