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

Zhao, Jiawei; Shi, Zi-Xiao; Li, Chengfei; Gu, Lin-Fei; Li, Gao‐Ren

doi:10.1039/d0sc04196c

Cited by 78 publications

(40 citation statements)

References 81 publications

(96 reference statements)

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“…In addition, the overpotential values for the (003) basal planes exceed those for the (012) edge planes, which suggests that it is more reasonable for the (012) edge planes to possess the active sites. [ 41 ]…”

Section: Resultsmentioning

confidence: 99%

Selective, Stable, Bias‐Free, and Efficient Solar Hydrogen Peroxide Production on Inorganic Layered Materials

Song

Ahn

et al. 2022

Adv Funct Materials

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The importance of hydrogen peroxide (H 2 O 2 ) continues to grow globally. Deriving the oxygen reduction reaction (ORR) toward the 2epathway to form H 2 O 2 is crucial for high H 2 O 2 productivity. However, most selective electrocatalysts following the 2epathway comprise carbon-containing organic materials with intrinsically low stability, thereby limiting their commercial applicability. Herein, layered double hydroxides (LDHs) are used as inorganic matrices for the first time. The LDH catalyst developed herein exhibits near-100% 2e -ORR selectivity and stably produces H 2 O 2 with a concentration of ≈108.2 mm cm -2 photoanode in 24 h in a two-compartment system (with a photoanode) with a solar-to-chemical conversion efficiency of ≈3.24%, the highest among all reported systems. Density functional theory calculations show that 2e -ORR selectivity is promoted by atomically dispersed cobalt atoms in (012) planes of the LDH catalyst, while a free energy gap between the * O and OOHstates is an important factor.

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Section: Resultsmentioning

confidence: 99%

Selective, Stable, Bias‐Free, and Efficient Solar Hydrogen Peroxide Production on Inorganic Layered Materials

Song

Ahn

et al. 2022

Adv Funct Materials

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“…The peaks around 300, 457, and 541 cm −1 can be assigned to the E g(R) , A 1g , and E g(T) modes of NiFe‐LDH phase. [ 17 ]…”

Section: Resultsmentioning

confidence: 99%

“…Nevertheless, the overpotential of 240 mV is still smaller than that of many reported OER catalysts. [ 17,22,48 ] To further assess the electrochemical durability of NF@NiFe‐LDH‐1.5‐4, the chronopotentiometric test was carried out at a large constant current density of 300 mA cm −2 . The η– t curve in Figure 4h shows that the real‐time overpotential just exhibits a little increase of 50 mV ≈120 h later.…”

Section: Resultsmentioning

confidence: 99%

“…During the past few years, great progress has been made in developing efficient non‐precious OER electrocatalysts, such as transition‐metal phosphides, [ 7–9 ] sulfides, [ 10,11 ] nitrides, [ 12,13 ] oxides, [ 14,15 ] (oxy)hydroxides [ 16,17 ] and metal‐free carbon materials, [ 18–20 ] etc. Among them, NiFe (oxy)hydroxide materials have been regarded as the most active non‐noble metal OER electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

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Ultrafast Room‐Temperature Synthesis of Self‐Supported NiFe‐Layered Double Hydroxide as Large‐Current–Density Oxygen Evolution Electrocatalyst

Liu

Fang

et al. 2021

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Water splitting is a promising sustainable technology to produce high purity hydrogen, but its commercial application remains a giant challenge due to the kinetically sluggish oxygen evolution reaction (OER). In this work, a time‐ and energy‐saving approach to directly grow NiFe‐layered double hydroxide (NiFe‐LDH) nanosheets on nickel foam under ambient temperature and pressure is reported. These NiFe‐LDH nanosheets are vertically rooted in nickel foam and interdigitated together to form a highly porous array, leading to numerous exposed active sites, reduced resistance of charge/mass transportation and enhanced mechanical stability. As self‐supported electrocatalyst, the representative sample (NF@NiFe‐LDH‐1.5‐4) shows an excellent large‐current–density catalytic activity for OER in alkaline electrolyte, requiring low overpotentials of 190 and 220 mV to reach the current densities of 100 and 657 mA cm−2 with a Tafel slope of 38.1 mV dec−1. In addition, NF@NiFe‐LDH‐1.5‐4 as an overall water splitting electrocatalyst can stably achieve a large current density of 200 mA cm−2 over 300 h at a low cell voltage of 1.83 V, meeting the requirement of industrial hydrogen production. This exceedingly simple and ultrafast synthesis of low‐cost and highly active large‐current–density OER electrocatalysts can propel the commercialization of hydrogen producing technology via water splitting.

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“…The state-of-the-art OER catalysts, such as RuO 2 and IrO 2 , demonstrate the outstanding OER performance ∼200 and ∼300 mV overpotential at a high current density (>10 mA cm –2 ) in acid and base, respectively; however, they still suffer from high cost in the practical applications. ,− In recent studies, transition-metal oxides have emerged as a series of potential substitutes to RuO 2 and IrO 2 , because of their high catalytic activities and low costs. − Among them, perovskites with ABO 3 formula (A is rare-earth or alkaline-earth metal element, B is transition metal) has attracted special attention, because of its adjustable structure and properties. − So far, perovskites have been used as OER catalysts with overpotential ranging from 400 mV to less than 300 mV . Even so, the experimental potential is still much higher than the theoretical thermodynamic potential of OER (1.23 V vs RHE).…”

Section: Introductionmentioning

confidence: 99%

Regulation of Perovskite Surface Stability on the Electrocatalysis of Oxygen Evolution Reaction

Zhao

Shi

et al. 2021

ACS Materials Lett.

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Electrocatalytic water splitting is considered as a promising route to use renewable energy for hydrogen production; however, its industrial application is limited by the anodic reaction, oxygen evolution reaction (OER). The key solution to unleash this constrain is to find an electrocatalyst that reduces the overpotential (η) of OER. Among the various electrocatalysts, perovskites have attracted intense attention recently for their high OER performance and low cost. To realize the commercial potential of perovskites, understanding its surface chemistry, including leaching, reconstruction, and lattice oxygen participated OER, is crucial to develop the nextgeneration perovskite catalysts,. In this Review, the perovskite surface stability is emphasized to be closely related to the chemical component of perovskite surface, which can be well controlled by surface engineering and further improves its OER performance. A new descriptor (stability level) is proposed to highlight the relationship between OER performance and surface stability of perovskite. This descriptor will provide potential strategies to optimize OER catalytic performance by tuning surface structure of perovskite.

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

Abstract: The instinct activity of NiFe layer double hydroxides (LDHs) for oxygen evolution reaction (OER) suffers from its predominately exposed basal plane (003), which was thought to be poor-activity. Herein, we...

Cited by 78 publications

References 81 publications

Selective, Stable, Bias‐Free, and Efficient Solar Hydrogen Peroxide Production on Inorganic Layered Materials

Selective, Stable, Bias‐Free, and Efficient Solar Hydrogen Peroxide Production on Inorganic Layered Materials

Ultrafast Room‐Temperature Synthesis of Self‐Supported NiFe‐Layered Double Hydroxide as Large‐Current–Density Oxygen Evolution Electrocatalyst

Regulation of Perovskite Surface Stability on the Electrocatalysis of Oxygen Evolution Reaction

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