Layered double hydroxides with atomic-scale defects for superior electrocatalysis

Xie, Qixian; Cai, Zhao; Li, Pengsong; Zhou, Daojin; Bi, Yongmin; Xiong, Xuya; Hu, Enyuan; Li, Yaping; Kuang, Yun; Sun, Xiaoming

doi:10.1007/s12274-018-2033-9

Cited by 135 publications

(122 citation statements)

References 61 publications

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“…Defect construction on the atomic scale is another efficient way to accelerate the OER activity of self-supported trimetallic LDH catalysts. Xie [81]. DFT + U computations demonstrate that the generation of dangling Ni-Fe sites by defect construction of Ni-O-Fe sites lowers the Gibbs free energy of the OER process.…”

Section: Self-supported Trimetallic Ldhsmentioning

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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Section: Self-supported Trimetallic Ldhsmentioning

confidence: 99%

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

Luo

Xiao

et al. 2020

Research

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“…The other works related to the catalytic performance and crystal plane of NiFe LDHs including the current density, Tafel slope and XRD peak strength ratio of plane (012) to plane (003) were compared with those of NiFe NSAs-MPs as shown in Figure 5g, [48][49][50][51][52][53][54][55][56][57][58] which shows that the main crystal plane of NiFe LDHs is (003), and the highest proportion of plane (012)/plane (003) is ~0.89…”

Section: Introductionmentioning

confidence: 99%

Boosting the electrocatalytic performance of NiFe layered double hydroxides for the oxygen evolution reaction by exposing the highly active edge plane (012)

Zhao

Shi

et al. 2021

Chem. Sci.

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“…In recent years, massive efforts have been made to develop clean and renewable energy devices including rechargeable batteries, fuel cells, electrolyzers, etc., to reduce the fossil fuels reliance and improve our environment . Among the electrode reactions involved in these new energy technologies, electrocatalytic oxidation of water to O 2 (oxygen evolution reaction, OER) plays a critical role in the long‐term storage of electricity from renewable sources in form of molecular fuels like H 2 via water electrolysis . Recently, many high‐performance and low‐cost catalysts, such as Co‐ and Ni‐based materials, have been developed for electrochemical and photoelectrocatalytic water oxidation in alkaline media.…”

mentioning

confidence: 99%

Strain Regulation to Optimize the Acidic Water Oxidation Performance of Atomic‐Layer IrO_x

et al. 2019

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Strain regulation has become an important strategy to tune the surface chemistry and optimize the catalytic performance of nanocatalysts. Herein, the construction of atomic‐layer IrOx on IrCo nanodendrites with tunable IrO bond length by compressive strain effect for oxygen evolution reaction (OER) in acidic environment is demonstrated. Evidenced from in situ extended X‐ray absorption fine structure, it is shown that the compressive strain of the IrOx layer on the IrCo nanodendrites decreases gradually from 2.51% to the unstrained state with atomic layer growth (from ≈2 to ≈9 atomic layers of IrOx), resulting in the variation of the IrO bond length from shortened 1.94 Å to normal 1.99 Å. The ≈3 atomic‐layer IrOx on IrCo nanodendrites with an IrO bond length of 1.96 Å (1.51% strain) exhibits the optimal OER activity compared to the higher‐strained (2.51%, ≈2 atomic‐layer IrOx) and unstrained (>6 atomic‐layer IrOx) counterparts, with an overpotential of only 247 mV to achieve a current density of 10 mA cm−2. Density functional theory calculations reveal that the precisely tuned compressive strain effect balances the adsorbate–substrate interaction and facilitates the rate‐determining step to form HOO*, thus assuring the best performance of the three atomic‐layer IrOx for OER.

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Layered double hydroxides with atomic-scale defects for superior electrocatalysis

Cited by 135 publications

References 61 publications

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

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

Boosting the electrocatalytic performance of NiFe layered double hydroxides for the oxygen evolution reaction by exposing the highly active edge plane (012)

Strain Regulation to Optimize the Acidic Water Oxidation Performance of Atomic‐Layer IrO_x

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Layered double hydroxides with atomic-scale defects for superior electrocatalysis

Cited by 135 publications

References 61 publications

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

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

Boosting the electrocatalytic performance of NiFe layered double hydroxides for the oxygen evolution reaction by exposing the highly active edge plane (012)

Strain Regulation to Optimize the Acidic Water Oxidation Performance of Atomic‐Layer IrOx

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Strain Regulation to Optimize the Acidic Water Oxidation Performance of Atomic‐Layer IrO_x