Partially amorphous nickel–iron layered double hydroxide nanosheet arrays for robust bifunctional electrocatalysis

Xie, Junfeng; Qu, Haichao; Lei, Fengcai; Xu, Peng; Liu, Weiwei; Gao, Li; Hao, Pin; Cui, Guanwei; Tang, Bo

doi:10.1039/c8ta05054f

Cited by 218 publications

(180 citation statements)

References 57 publications

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“…Benefitting from the unique structure, NFLS exhibited an excellent catalytic activity toward OER with current densities of 10 mA cm −2 at an overpotential of 197 mV. Additionally, Tang and co‐workers designed a NiFe‐LDHs nanosheet array catalyst grown on the NiFe alloy foam (denoted as pa‐NiFe LDH NS/NIF) with partially amorphous characteristics, rich native Ni 3+ ions and an optimal Ni/Fe ratio, which can exhibit robust performances on OER (Figure 4B) 33. Because of the partially amorphous feature, the catalytically active high‐valence species are prone to generation and stabilization, and thus further realizing enhanced electro‐oxidation activity by means of an internal 2D charge transfer pathway and native Ni 3+ ions.…”

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

confidence: 99%

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

Gao

Yan

2019

Advanced Energy Materials

409

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

confidence: 99%

“…Fully amorphous, partially amorphous, and highly crystalline catalysts can be fabricated by tuning the synthesis temperature. Reproduced with permission 33. Copyright 2018, The Royal Society of Chemistry.…”

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

409

208

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“…The expanded interlayers are thought to provide more space for diffusion of the reactants and bubbles, thus leading to better OER activity. Xie et al fabricated partially amorphous NiFe LDH nanosheet arrays on NIF via a hydrothermal reaction [52]. This unique partially amorphous structure creates Ni 3+ cations and increases the concentration of high-valence active sites for OER while the NiFe alloy foam with an optimized Ni : Fe ratio is believed to have long-term stability in alkaline media toward OER.…”

Section: Researchmentioning

confidence: 99%

Recent Advances in Self-Supported Layered Double Hydroxides for Oxygen Evolution Reaction

Luo

Xiao

et al. 2020

Research

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Electrochemical water splitting driven by clean and sustainable energy sources to produce hydrogen is an efficient and environmentally friendly energy conversion technology. Water splitting involves hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), in which OER is the limiting factor and has attracted extensive research interest in the past few years. Conventional noble-metal-based OER electrocatalysts like IrO2 and RuO2 suffer from the limitations of high cost and scarce availability. Developing innovative alternative nonnoble metal electrocatalysts with high catalytic activity and long-term durability to boost the OER process remains a significant challenge. Among all of the candidates for OER catalysis, self-supported layered double hydroxides (LDHs) have emerged as one of the most promising types of electrocatalysts due to their unique layered structures and high electrocatalytic activity. In this review, we summarize the recent progress on self-supported LDHs and highlight their electrochemical catalytic performance. Specifically, synthesis methods, structural and compositional parameters, and influential factors for optimizing OER performance are discussed in detail. Finally, the remaining challenges facing the development of self-supported LDHs are discussed and perspectives on their potential for use in industrial hydrogen production through water splitting are provided to suggest future research directions.

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“…[5][6][7] Hence,t hin 2D-TMHs contribute to providinga bundant active sites and show much improved OER catalytic activity.M oreover,t hin 2D-TMHs with large surface area offer an enlarged solid/liquid interface, which enhances surfacea dsorption and desorption of reactants and products during the OER. [8][9][10][11] In addition, the thin structure of 2D-TMHs may be beneficial for shortening the diffusion length of intermediate speciesa nd boosting charge-transfera bility. [5,12,13] Hence, thin 2D-TMHs are considered to be promising candidates for replacing Ru(Ir)O 2 noble-metal catalysts.…”

Section: Introductionmentioning

confidence: 99%

Interface Electronic Coupling in Hierarchical FeLDH(FeCo)/Co(OH)₂ Arrays for Efficient Electrocatalytic Oxygen Evolution

et al. 2019

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The oxygen evolution reaction (OER) with sluggish kinetics is the key half‐cell reaction for several sustainable energy systems, such as electrochemical water splitting, fuel cells, and rechargeable metal–air batteries. Two‐dimensional transition‐metal hydroxides have good prospects for the OER. Herein, 2D hierarchical FeLDH(FeCo)/Co(OH)2 (LDH=layered double hydroxide) arrays were fabricated by growing 2D‐ZIF‐67 (ZIF=zeolitic imidazolate framework) on carbon cloth, transformation of 2D‐ZIF‐67 into Co(OH)2, and electrodeposition of FeLDH(FeCo) on Co(OH)2 at ambient temperature. The optimized hierarchical catalyst exhibits high OER activity that requires a small overpotential of only 242 mV to drive 10 mA cm−2 (279 mV for 100 mA cm−2) and prolonged durability for 100 h at 20 mA cm−2 in 1 m KOH. The FeLDH(FeCo)/Co(OH)2 interfaces are observed to be the electrocatalytically active centers for the OER. The interfaces contribute to accelerating the OER kinetics owing to fast transfer of intermediate oxygen species. Furthermore, the FeCo alloy promotes electron transfer among the newly formed interfaces related to CoOOH in the OER process, which leads to improved durability. This work gives insight into the design and synthesis of hierarchical bimetallic hydroxide arrays with high OER activity and durability, as well as understanding of the origin of the OER promotion by metals and metal hydroxides.

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Partially amorphous nickel–iron layered double hydroxide nanosheet arrays for robust bifunctional electrocatalysis

Abstract: Bifunctional electrocatalysts that can boost energy-related reactions are urgently in demand for pursual of dual and even multiple targets towards practical applications such as energy conversion, clean fuel production and pollution treatment.

Cited by 218 publications

References 57 publications

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

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

Recent Advances in Self-Supported Layered Double Hydroxides for Oxygen Evolution Reaction

Interface Electronic Coupling in Hierarchical FeLDH(FeCo)/Co(OH)₂ Arrays for Efficient Electrocatalytic Oxygen Evolution

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Partially amorphous nickel–iron layered double hydroxide nanosheet arrays for robust bifunctional electrocatalysis

Abstract: Bifunctional electrocatalysts that can boost energy-related reactions are urgently in demand for pursual of dual and even multiple targets towards practical applications such as energy conversion, clean fuel production and pollution treatment.

Cited by 218 publications

References 57 publications

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

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

Recent Advances in Self-Supported Layered Double Hydroxides for Oxygen Evolution Reaction

Interface Electronic Coupling in Hierarchical FeLDH(FeCo)/Co(OH)2 Arrays for Efficient Electrocatalytic Oxygen Evolution

Contact Info

Product

Resources

About

Interface Electronic Coupling in Hierarchical FeLDH(FeCo)/Co(OH)₂ Arrays for Efficient Electrocatalytic Oxygen Evolution