NiFe Hydroxide Lattice Tensile Strain: Enhancement of Adsorption of Oxygenated Intermediates for Efficient Water Oxidation Catalysis

Zhou, Daojin; Wang, Shiyuan; Jia, Yin; Xiong, Xuya; Yang, Hongbin; Liu, Song; Tang, Jui-Hsiang; Zhang, Junming; Liu, Dong; Zheng, Lirong; Kuang, Yun; Sun, Xiaoming; Liu, Bin

doi:10.1002/anie.201809689

Cited by 384 publications

(230 citation statements)

References 42 publications

(16 reference statements)

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“…Conceivably, the exchange of ligand and hydroxide in the electrolyte was confirmed by the analysis of UV absorption spectra of the electrolyte of the immersion FN‐2 (Figure S9, Supporting Information). As shown in Figure S10 in the Supporting Information, after soaking in KOH solution, the FN‐2 powder exhibits obvious peaks at 11.5°, 23.3°, 34.5°, and 60.3°, which can be assigned to NiFe‐LDH, indicating that the vast majority of FN‐2 are transformed to NiFe‐LDH . We did the same experiment for Ni‐MOFs and Fe‐MOFs as FN‐2, and got a similar result (Figure S11, Supporting Information).…”

Section: Resultsmentioning

confidence: 53%

Engineering Bimetal Synergistic Electrocatalysts Based on Metal–Organic Frameworks for Efficient Oxygen Evolution

Liu

Kong

Wang

et al. 2019

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133

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Benefiting from metal–organic frameworks (MOFs) unique structural characteristics, their versatility in composition and structure has been well explored in electrochemical oxygen evolution reaction (OER) processes. Here, a ligand/ionic exchange phenomenon of MOFs is reported in alkaline solution due to their poor stability, and the active species and reaction mechanism of MOFs are revealed in the OER process. A series of mixed Ni‐MOFs and Fe‐MOFs are synthesized by straightforward sonication and then directly used as catalyst candidates for OER in alkaline electrolyte. It can be confirmed via ex situ transmission electron microscopic images and X‐ray diffraction patterns analysis, that the bimetallic hydroxide (NiFe‐LDH) is generated in 1.0 m KOH in situ and acts as protagonist for oxygen evolution. The optimized catalyst (FN‐2) exhibits a lower overpotential (275 mV at a current density of 10 mA cm−2) and excellent long‐term stability (strong current density for 100 h without fading). The revelation of the real active species of MOF materials may contribute to better understanding of the reaction mechanism.

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Section: Resultsmentioning

confidence: 53%

Engineering Bimetal Synergistic Electrocatalysts Based on Metal–Organic Frameworks for Efficient Oxygen Evolution

Liu

Kong

Wang

et al. 2019

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133

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“…Unfortunately, weak binding of oxidized intermediates on NiFe hydroxide still limits its catalytic activity. Hence, Sun and co‐workers design a simple ball milling method to increase the binding strength of NiFe hydroxide and oxygen‐containing intermediates by generating tensile strain, thereby reducing the antibonding filling states in the d orbital and thus promoted oxygenated intermediates adsorption 41. The NiFe hydroxide having an increased tensile strain after ball‐milling exhibits an OER onset potential as low as 1.44 V (vs RHE) and only an overpotential of 270 mV was required to reach a water oxidation current density of 10 mA cm −2 .…”

Section: Ni/fe‐based Micro/nanostructures For Electrochemical Water Omentioning

confidence: 99%

Recent Development of Ni/Fe‐Based Micro/Nanostructures toward Photo/Electrochemical Water Oxidation

Gao

Yan

2019

Advanced Energy Materials

396

208

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The oxygen evolution reaction (OER), as an important process involved in water splitting and rechargeable metal–air batteries, has drawn increasing attention in the context of clean energy generation and efficient energy storage. This review concerns the progress and new discoveries in the field of Ni/Fe‐based micro/nanostructures toward electrochemical and photo‐electrochemical (PEC) water oxidation during last few years. First, toward the design and construction of new electrocatalysis, different types of current Ni/Fe‐based compounds for OER are summarized. The mechanism studies of the active phases and positions of Ni/Fe‐based micro/nanostructures are further introduced to understand the properties of catalytic active sites, which could facilitate further improving the performance of Ni/Fe‐based OER electrocatalysts. Second, splitting water using sunlight with low overpotential is another important target in making solar‐to‐hydrogen micro/nanodevices, and thus attention is then focused on the development of several important Ni/Fe‐based PEC catalysts. Third, the recent theoretical calculations on the OER mechanism during water splitting and insights into electronic structures are analyzed; finally, the future trends and perspectives are also discussed briefly.

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“…These features will guarantee the efficient OER process under high current conditions for industrial applications. Recently, Liu's group reported that generating the lattice strain of NiFe hydroxide can effectively enhance the binding strength between NiFe hydroxide and oxygenated intermediates . From another side, electronic engineering is also crucial to enhance the electrocatalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Efficient Optimization of Electron/Oxygen Pathway by Constructing Ceria/Hydroxide Interface for Highly Active Oxygen Evolution Reaction

Xia

Zhao

Huang

et al. 2020

Adv Funct Materials

139

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Owing to the unique electronic properties, rare‐earth modulations in noble‐metal electrocatalysts emerge as a critical strategy for a broad range of renewable energy solutions such as water‐splitting and metal–air batteries. Beyond the typical doping strategy that suffers from synthesis difficulties and concentration limitations, the innovative introduction of rare‐earth is highly desired. Herein, a novel synthesis strategy is presented by introducing CeO2 support for the nickel–iron–chromium hydroxide (NFC) to boost the oxygen evolution reaction (OER) performance, which achieves an ultralow overpotential at 10 mA cm−2 of 230.8 mV, the Tafel slope of 32.7 mV dec−1, as well as the excellent durability in alkaline solution. Density functional theory calculations prove the established d–f electronic ladders, by the interaction between NFC and CeO2, evidently boosts the high‐speed electron transfer. Meanwhile, the stable valence state in CeO2 preserves the high electronic reactivity for OER. This work demonstrates a promising approach in fabricating a nonprecious OER electrocatalyst with the facilitation of rare‐earth oxides to reach both excellent activity and high stability.

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NiFe Hydroxide Lattice Tensile Strain: Enhancement of Adsorption of Oxygenated Intermediates for Efficient Water Oxidation Catalysis

Cited by 384 publications

References 42 publications

Engineering Bimetal Synergistic Electrocatalysts Based on Metal–Organic Frameworks for Efficient Oxygen Evolution

Engineering Bimetal Synergistic Electrocatalysts Based on Metal–Organic Frameworks for Efficient Oxygen Evolution

Recent Development of Ni/Fe‐Based Micro/Nanostructures toward Photo/Electrochemical Water Oxidation

Efficient Optimization of Electron/Oxygen Pathway by Constructing Ceria/Hydroxide Interface for Highly Active Oxygen Evolution Reaction

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