One-step MOF-derived Co/Co<sub>9</sub>S<sub>8</sub> nanoparticles embedded in nitrogen, sulfur and oxygen ternary-doped porous carbon: an efficient electrocatalyst for overall water splitting

Du, Jian; Wang, Rui; Lv, Ya-Ru; Wei, Yibin; Zang, Shuang‐Quan

doi:10.1039/c9cc00196d

Cited by 84 publications

(46 citation statements)

References 30 publications

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“…In recent times, a versatile strategy for designing highperformance electrocatalysts has been to controllably introduce two different metal species into a single nanostructure, namely Co-NC@ Mo 2 C, [119] Co 3 O 4 -RuCo@NC, [121] NG-NiFe@MoC 2 , [256] Co/Co 9 S 8 @ NSOC, [122] NiO/Co 3 O 4 , [120] Co@Ir/NC, [257] Ni 2 P/CoN-PCP, [258] among others, [92,[259][260][261][262][263][264] to further facilitate and accelerate the activation process of the reactants. For instance, Hu et al synthesized MoC 2 -doped NiFe alloy nanoparticles (NPs) embedded within several-layer-thick N-doped graphene (NG-NiFe@MoC 2 ) using one-step calcination of hybrid precursors composed of PVP-encapsulating NiFe-PBA and grafted Mo 6+ cations (Figure 15Ba).…”

Section: Mof-derived Catalystsmentioning

confidence: 99%

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: Mof-derived Catalystsmentioning

confidence: 99%

Designing MOF Nanoarchitectures for Electrochemical Water Splitting

et al. 2021

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“…21 Further, we analyzed the XPS S 2p 3/2 at 164.1 eV and S 2p 1/2 at 165.3 eV that indicate the C-S-C chemical bond in the organic ligand ( Supplementary Fig. 15b); 22 and the peaks of the O1s at 530.4, 531.3 and 532 eV attributed to O-M (Ni, Mn), C=O and -OH from metal nodes of MOF materials ( Supplementary Fig. 15c).…”

Section: Resultsmentioning

confidence: 99%

Bio-inspired general synthesis of superplastic metal-organic framework aerogels and their applications

Sun

Zhu

et al. 2020

Preprint

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Many proposed utilizations for metal-organic frameworks (MOFs) demand their assembly into three-dimensional (3D) monolithic architectures. The capability of sustaining structural integrity during considerable deformations is important to allow a monolithic material that works reliably. Nevertheless, it remains a significant challenge to realize high superplasticity in 3D macroscopic MOF networks. Here we report the ice-template-driven assembly of MOF nanobelts to form superelastic MOF-based cellular aerogels. Inspired by the hierarchical architecture of natural cork, the resulting materials can fully and rapidly recover its initial architecture after 50% strain compression and unloading for 2000 cycles. The characteristic hierarchical structure can be extended to single (Ni-, Mn-, and Co-), binary (NiMn-, NiCo-, and CoMn-), and ternary (NiCoMn-) MOF aerogels with exceptionally structural and chemical properties. Potential application has been further demonstrated for NiMn-MOF aerogels in flexible energy conversion, which can effectively electrocatalysize hydrogen evolution in natural seawater even in the presence of considerable electrode deformations. The successful fabrication of such a class of fascinating architectures opens up enormous opportunities for exploring new application of MOFs in a free-standing, structurally adaptive, and macroscopic form

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“…Using Co‐NSOMOF as precursor, Du et al. synthesized Co/Co 9 S 8 nanoparticles that provide excellent bifunctional electrocatalysts for water splitting . Liu et al.…”

Section: Methodsmentioning

confidence: 99%

Growth of Lattice Coherent Co₉S₈/Co₃O₄ Nano‐Heterostructure for Maximizing the Catalysis of Co‐Based Composites

Peng

Zhang

et al. 2020

ChemCatChem

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One-step MOF-derived Co/Co₉S₈ nanoparticles embedded in nitrogen, sulfur and oxygen ternary-doped porous carbon: an efficient electrocatalyst for overall water splitting

Abstract: Co/Co9S8 nanoparticles encapsulated in a N, S, and O ternary-doped carbon matrix were synthesized utilizing a Co-NSOMOF as a single precursor, and they exhibited excellent bifunctional electrocatalytic activity for the OER and HER.

Cited by 84 publications

References 30 publications

Designing MOF Nanoarchitectures for Electrochemical Water Splitting

Designing MOF Nanoarchitectures for Electrochemical Water Splitting

Bio-inspired general synthesis of superplastic metal-organic framework aerogels and their applications

Growth of Lattice Coherent Co₉S₈/Co₃O₄ Nano‐Heterostructure for Maximizing the Catalysis of Co‐Based Composites

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One-step MOF-derived Co/Co9S8 nanoparticles embedded in nitrogen, sulfur and oxygen ternary-doped porous carbon: an efficient electrocatalyst for overall water splitting

Abstract: Co/Co9S8 nanoparticles encapsulated in a N, S, and O ternary-doped carbon matrix were synthesized utilizing a Co-NSOMOF as a single precursor, and they exhibited excellent bifunctional electrocatalytic activity for the OER and HER.

Cited by 84 publications

References 30 publications

Designing MOF Nanoarchitectures for Electrochemical Water Splitting

Designing MOF Nanoarchitectures for Electrochemical Water Splitting

Bio-inspired general synthesis of superplastic metal-organic framework aerogels and their applications

Growth of Lattice Coherent Co9S8/Co3O4 Nano‐Heterostructure for Maximizing the Catalysis of Co‐Based Composites

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One-step MOF-derived Co/Co₉S₈ nanoparticles embedded in nitrogen, sulfur and oxygen ternary-doped porous carbon: an efficient electrocatalyst for overall water splitting

Growth of Lattice Coherent Co₉S₈/Co₃O₄ Nano‐Heterostructure for Maximizing the Catalysis of Co‐Based Composites