In situ encapsulated nickel-copper nanoparticles in metal-organic frameworks for oxygen evolution reaction

Ma, Xingcheng; Qi, Kun; Wei, Shuting; Zhang, Lei; Cui, Xiaoqiang

doi:10.1016/j.jallcom.2018.08.096

Cited by 48 publications

(20 citation statements)

References 46 publications

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“…Ma et al synthesized MOF-encapsulated bimetallic nanoparticles with enhanced OER performance and stability via the in situ etching of Cu-Ni nanostructures. [52] TEM/STEM images and EDS mapping showed no significant changes in the structure and element distribution after the electrochemical measurements. In particular, Ni-Cu@Cu-Ni-MOF presented the lowest overpotential at a current density of 10 mA cm −2 and the smallest Tafel slope of 98 mV dec −1 .…”

Section: Guests@mofsmentioning

confidence: 88%

Designing MOF Nanoarchitectures for Electrochemical Water Splitting

et al. 2021

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carrier with an extremely high energy density (approximately 142 MJ kg −1 ) and zero-carbon content, has been regarded as a promising clean fuel. [1,2] In this context, electrochemical water splitting, which converts electricity into storable hydrogen, is a viable and efficient solution to mitigate severe energy shortages and greenhouse gas emissions. [3] Among these strategies, hydrogen and oxygen evolution reactions, which occur on the cathode and anode, respectively, in a water electrolyzer, are considered as two critical half-reactions of the water-splitting process. [4] Theoretically, water splitting requires a thermodynamic Gibbs free energy (ΔG) of approximately 237.2 kJ mol −1 , corresponding to a standard potential (ΔE) of 1.23 V versus a reversible hydrogen electrode (RHE), which allows the thermodynamically uphill reaction to occur in the electrolyzer. [5] However, the unfavorable thermodynamics and resulting large overpotential are the main barriers to the scalable implementation of water electrolysis for hydrogen generation. [6,7] Currently, noble metal-based electrocatalysts exhibit the most efficient activity for water splitting, particularly Pt-based hydrogen evolution reaction (HER) catalysts and Ir/Ru-based oxygen evolution reaction (OER) catalysts. [8,9] Nevertheless, the scarcity and high price of precious metals severely impede their widespread use in commercial water-splitting applications. Taking these limitations into Electrochemical water splitting has attracted significant attention as a key pathway for the development of renewable energy systems. Fabricating efficient electrocatalysts for these processes is intensely desired to reduce their overpotentials and facilitate practical applications. Recently, metal-organic framework (MOF) nanoarchitectures featuring ultrahigh surface areas, tunable nanostructures, and excellent porosities have emerged as promising materials for the development of highly active catalysts for electrochemical water splitting. Herein, the most pivotal advances in recent research on engineering MOF nanoarchitectures for efficient electrochemical water splitting are presented. First, the design of catalytic centers for MOF-based/derived electrocatalysts is summarized and compared from the aspects of chemical composition optimization and structural functionalization at the atomic and molecular levels. Subsequently, the fast-growing breakthroughs in catalytic activities, identification of highly active sites, and fundamental mechanisms are thoroughly discussed. Finally, a comprehensive commentary on the current primary challenges and future perspectives in water splitting and its commercialization for hydrogen production is provided. Hereby, new insights into the synthetic principles and electrocatalysis for designing MOF nanoarchitectures for the practical utilization of water splitting are offered, thus further promoting their future prosperity for a wide range of applications.

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Section: Guests@mofsmentioning

confidence: 88%

Designing MOF Nanoarchitectures for Electrochemical Water Splitting

et al. 2021

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“…Controlled thermal treatment is an impressive method for the isolation of nanoparticles within MOFs, but one has to firmly control the heating parameters to avoid the massive reduction in the MOF surface area and the complete destruction of pore channels. Mixed-metallic MOFs, on controlled thermal treatment, can produce highly active heterogeneous nanoparticles within their architecture, but it is quite challenging to create such structures by any conventional methods. , Moreover, developing a bifunctional catalyst for both OER and HER, with higher performance and durability over noble-metal catalysts, is still a challenge. , Although quite a few catalysts have demonstrated better performance over noble-metal-based electrocatalysts only in a few aspects, the problem is designing an advanced catalyst that will surpass all of the aspects of precious-metal catalysts in water splitting. − ,,, …”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is possible to develop extremely active and robust semi-MOF derivatives by combining the advantages of carbon nanotube (CNT) and the partial pyrolysis strategy . Herein, for the first time, we synthesize FeNi 3 –Fe 3 O 4 heterogeneous nanoparticles homogenously anchored on a matrix of MOF nanosheets and carbon nanotubes (FeNi 3 –Fe 3 O 4 NPs/MOF-CNT), by a facile hydrothermal reaction and subsequent partial thermal decomposition of NiFe 0.5 -MOF/CNT. , Due to its unique three-dimensional (3D) porous nanoarchitecture fabricated by ultrathin nanoparticles anchored on two-dimensional (2D) nanosheets/one-dimensional (1D) CNT matrix, there are abundant active catalytic sites in the FeNi 3 –Fe 3 O 4 NPs/MOF-CNT hybrid, which makes it a bifunctional electrocatalyst with superior electrocatalytic performance for water splitting. This hybrid delivers an ultralow overpotential of 234 mV to achieve a current density of 10 mA/cm 2 in the OER process on a glassy carbon electrode (GCE), surpassing those of as-prepared NiFe 0.5 -MOF, NiFe 0.5 -MOF/CNT, FeNi 3 –Fe 3 O 4 NPs/MOF (prepared by partial annealing of NiFe 0.5 -MOF), commercial RuO 2 , and the non-noble-metal catalysts reported earlier (Table S1).…”

Section: Introductionmentioning

confidence: 99%

FeNi₃–Fe₃O₄ Heterogeneous Nanoparticles Anchored on 2D MOF Nanosheets/1D CNT Matrix as Highly Efficient Bifunctional Electrocatalysts for Water Splitting

Srinivas

Chen

et al. 2020

ACS Sustainable Chem. Eng.

101

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It is still challengeable to develop a nonprecious bifunctional electrocatalyst for both hydrogen and oxygen evolution reactions (HER and OER), with higher efficiency and superior durability over the benchmark noble-metal-based electrocatalysts. To address such issues, for the first time, we design and synthesize FeNi 3 −Fe 3 O 4 heterogeneous nanoparticles (NPs) homogenously anchored on a matrix of metal-organic framework (MOF) nanosheets and carbon nanotubes (FeNi 3 −Fe 3 O 4 NPs/MOF-CNT) by a facile hydrothermal reaction and subsequent partial decomposition of a low-cost and earth-abundant Ni/Fe/C precursor. Due to its unique porous nanoarchitecture constructed by ultrafine nanoparticles anchored on two-dimensional (2D) nanosheets/one-dimensional (1D) CNT matrix, it can be employed as a bifunctional electrocatalyst with superior electrocatalytic activity for water splitting: it delivers a small Tafel slope of 37 mV/dec for OER and requires only a very low overpotential of 234 mV to obtain 10 mA/cm 2 ; it has a very low overpotential of 108 mV for HER and also shows an ultralow overpotential of 360 mV to reach 10 mA/cm 2 for overall water splitting by outperforming the precious-metal-based electrocatalysts (Pt/C and RuO 2 ; 393 mV at η 10 ). Moreover, it exhibits excellent longterm stability. This work presents a rational nanoarchitecture design and facile fabrication strategy to obtain nonprecious metalbased electrocatalysts with high efficiency and excellent long-lasting abilities.

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“…Ma et al 129 ran an in situ synthesis of CuNi‐bimetallic MOF enveloped Cu–Ni bimetallic nanoparticles by etching nickel–copper alloy nanoparticles without adding more metal precursors (Ni–Cu@Cu–Ni MOF). The nickel–copper nanoparticles are taken as the metal precursor sources and are encapsulated into MOFs to accelerate the catalytic performances and consolidate the stability for OER.…”

Section: Multimetallic Mofs‐based Oer Electrocatalystmentioning

confidence: 99%

Metal‐organic frameworks‐derived novel nanostructured electrocatalysts for oxygen evolution reaction

2020

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Engineering cost‐effective catalysts with exceptional performance for the electrochemical oxygen evolution reaction (OER) remains crucial for the accelerated development of renewable energy techniques, and especially so, given the pivotal role of OER in water electrolysis. On the basis of the metal nodes (clusters) and organic linkers, metal‐organic frameworks (MOFs) and their derivatives are rapidly gaining ground in the fabrication of electrocatalysts, with promising catalytic activity and sound durability in OER, thanks to their controllable pore structures, abundant unsaturated active sites of metal ion, extensive specific surface area, as well as easily functionalized/modified surfaces. This review presents an in‐depth understanding of the established progress of MOFs‐derived materials for OER electrocatalysis. The material designing strategies of the pristine, monometallic, and multimetallic MOFs‐based catalysts are summarized to indicate the infinite possibilities of the morphology and the composition of MOF‐derived materials. While emphasis is laid on the essential features of MOF‐derived materials for the electrocatalysis of the corresponding reactions, insights about the applications in OER are discussed. Finally, this paper is concluded by presenting challenges and perspectives for MOF‐derived materials’ future applications in OER electrocatalysis.

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In situ encapsulated nickel-copper nanoparticles in metal-organic frameworks for oxygen evolution reaction

Cited by 48 publications

References 46 publications

Designing MOF Nanoarchitectures for Electrochemical Water Splitting

Designing MOF Nanoarchitectures for Electrochemical Water Splitting

FeNi₃–Fe₃O₄ Heterogeneous Nanoparticles Anchored on 2D MOF Nanosheets/1D CNT Matrix as Highly Efficient Bifunctional Electrocatalysts for Water Splitting

Metal‐organic frameworks‐derived novel nanostructured electrocatalysts for oxygen evolution reaction

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In situ encapsulated nickel-copper nanoparticles in metal-organic frameworks for oxygen evolution reaction

Cited by 48 publications

References 46 publications

Designing MOF Nanoarchitectures for Electrochemical Water Splitting

Designing MOF Nanoarchitectures for Electrochemical Water Splitting

FeNi3–Fe3O4 Heterogeneous Nanoparticles Anchored on 2D MOF Nanosheets/1D CNT Matrix as Highly Efficient Bifunctional Electrocatalysts for Water Splitting

Metal‐organic frameworks‐derived novel nanostructured electrocatalysts for oxygen evolution reaction

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FeNi₃–Fe₃O₄ Heterogeneous Nanoparticles Anchored on 2D MOF Nanosheets/1D CNT Matrix as Highly Efficient Bifunctional Electrocatalysts for Water Splitting