Oxygen vacancy-rich amorphous FeNi hydroxide nanoclusters as an efficient electrocatalyst for water oxidation

Cao, Youhai; Su, Yang; Xu, Liangliang; Yang, Xiaohua; Han, Zhongkang; Cao, Rui; Li, Gao

doi:10.1016/j.jechem.2022.03.044

Cited by 53 publications

(19 citation statements)

References 62 publications

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“…It can be seen from the further magnification in Figure 2d that the outward extension of each petal of the "nanoflower" cluster petals stretching outward produces the "tip effect", which is more conducive to the exposure of active sites at the edge and mass transfer under high current density. The results are consistent with the research on the "cluster structure" in recently reported literature [5,30,31].…”

Section: Structure and Characterizationsupporting

confidence: 93%

“…The results further prove that the NiFe LDHs/Ni fiber electrode has excellent OER electrocatalytic performance, which is due to the special morphological structure of the "nanoflowers" cluster petal stretching outward to produce the "tip effect", which is more conducive to the exposure of active sites at the edge and mass transfer under high current density [5,30,31].…”

Section: Oer Performance In Alkaline Mediamentioning

confidence: 58%

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Self-Supporting NiFe Layered Double Hydroxide “Nanoflower” Cluster Anode Electrode for an Efficient Alkaline Anion Exchange Membrane Water Electrolyzer

Guo

Chi

et al. 2022

Energies

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The development of an efficient and durable oxygen evolution reaction (OER) electrode is needed to solve the bottleneck in the application of an anion exchange membrane water electrolyzer (AEMWE). In this work, the self-supporting NiFe layered double hydroxides (NiFe LDHs) “nanoflower” cluster OER electrode directly grown on the surface of nickel fiber felt (Ni fiber) was synthesized by a one-step impregnation at ambient pressure and temperature. The self-supporting NiFe LDHs/Ni fiber electrode showed excellent activity and stability in a three-electrode system and as the anode of AEMWE. In a three-electrode system, the NiFe LDHs/Ni fiber electrode showed excellent OER performance with an overpotential of 208 mV at a current density of 10 mA cm−2 in 1 M KOH. The NiFe LDHs/Ni fiber electrode was used as the anode of the AEMWE, showing high cell performance with a current density of 0.5 A cm−2 at 1.68 V and a stability test for 200 h in 1 M KOH at 70 °C. The electrocatalytic performance of NiFe LDHs/Ni fiber electrode is due to the special morphological structure of “nanoflower” cluster petals stretching outward to produce the “tip effect,” which is beneficial for the exposure of active sites at the edge and mass transfer under high current density. The experimental results show that the NiFe LDHs/Ni fiber electrode synthesized by the one-step impregnation method has the advantages of good activity and low cost, and it is promising for industrial application.

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Section: Structure and Characterizationsupporting

confidence: 93%

Section: Oer Performance In Alkaline Mediamentioning

confidence: 58%

Self-Supporting NiFe Layered Double Hydroxide “Nanoflower” Cluster Anode Electrode for an Efficient Alkaline Anion Exchange Membrane Water Electrolyzer

Guo

Chi

et al. 2022

Energies

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“…Synthesis of Co/CoN x -C electrocatalysts Co/CoN x -C electrocatalysts were prepared according to our reported method. 41 Typically, hexamethylenetetramine (0.24 g) and Co(NO 3 ) 2 $6H 2 O were dissolved into a CH 3 OH (17 mL) solution. Then, Carbon ECP (0.2 g; BET: $720 m 2 g À1 ) was added into the methanolic solution.…”

Section: Methodsmentioning

confidence: 99%

Facile synthesis of cobalt cluster-CoN_x composites: synergistic effect boosts electrochemical oxygen reduction

Xie

Huang

et al. 2022

J. Mater. Chem. A

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“…The reductive oxides have been well-documented in the redox reactions [ 28 , 29 , 30 , 31 , 32 , 33 ]. Zirconia is a top pick among potential catalysts for the green DMC production.…”

Section: Developed Methods For Green Dmc Synthesismentioning

confidence: 99%

New Strategies on Green Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol over Oxide Composites

et al. 2022

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Dimethyl carbonate is a generally used chemical substance which is environmentally sustainable in nature and used in a range of industrial applications as intermediate. Although various methods, including methanol phosgenation, transesterification and oxidative carbonylation of methanol, have been developed for large-scale industrial production of DMC, they are expensive, unsafe and use noxious raw materials. Green production of DMC from CO2 and methanol is the most appropriate and eco-friendly method. Numerous catalysts were studied and tested in this regard. The issues of low yield and difficulty in tests have not been resolved fundamentally, which is caused by the inherent problems of the synthetic pathway and limitations imposed by thermodynamics. Electron-assisted activation of CO2 and membrane reactors which can separate products in real-time giving a maximum yield of DMC are also being used in the quest to find more effective production method. In this review paper, we deeply addressed green production methods of DMC using Zr/Ce/Cu-based nanocomposites as catalysts. Moreover, the relationship between the structure and activity of catalysts, catalytic mechanisms, molecular activation and active sites identification of catalysts are also discussed.

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Oxygen vacancy-rich amorphous FeNi hydroxide nanoclusters as an efficient electrocatalyst for water oxidation

Cited by 53 publications

References 62 publications

Self-Supporting NiFe Layered Double Hydroxide “Nanoflower” Cluster Anode Electrode for an Efficient Alkaline Anion Exchange Membrane Water Electrolyzer

Self-Supporting NiFe Layered Double Hydroxide “Nanoflower” Cluster Anode Electrode for an Efficient Alkaline Anion Exchange Membrane Water Electrolyzer

Facile synthesis of cobalt cluster-CoN_x composites: synergistic effect boosts electrochemical oxygen reduction

New Strategies on Green Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol over Oxide Composites

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Oxygen vacancy-rich amorphous FeNi hydroxide nanoclusters as an efficient electrocatalyst for water oxidation

Cited by 53 publications

References 62 publications

Self-Supporting NiFe Layered Double Hydroxide “Nanoflower” Cluster Anode Electrode for an Efficient Alkaline Anion Exchange Membrane Water Electrolyzer

Self-Supporting NiFe Layered Double Hydroxide “Nanoflower” Cluster Anode Electrode for an Efficient Alkaline Anion Exchange Membrane Water Electrolyzer

Facile synthesis of cobalt cluster-CoNx composites: synergistic effect boosts electrochemical oxygen reduction

New Strategies on Green Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol over Oxide Composites

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Facile synthesis of cobalt cluster-CoN_x composites: synergistic effect boosts electrochemical oxygen reduction