Self-supported Ni3Se2@NiFe layered double hydroxide bifunctional electrocatalyst for overall water splitting

Jin, Hu; Zhu, Shengli; Liang, Yanqin; Wu, Shuilin; Li, Zhaoyang; Luo, Shuiyuan; Cui, Zhenduo

doi:10.1016/j.jcis.2020.12.016

Cited by 113 publications

(38 citation statements)

References 55 publications

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“…Figure c shows the direct comparison of studied electrocatalysts, where NiFe LDH@NiFe exhibits the best catalytic activity among all samples. Moreover, the OER performance of NiFe LDH@NiFe is also comparable, even superior, to most of the previously reported works that are based on the Ni–Fe system (Figure d), e.g., FeNiF/NCF (η 10 = 260 mV, 67 mV dec –1 ), NiFeCo-LDH/CF (η 10 = 249 mV, 42 mV dec –1 ), NiFe LDH/NNGF (η 10 = 191 mV, 40.1 mV dec –1 ), Ni–Fe LDHs (η 10 = 243 mV, 35.52 mV dec –1 ), and so on. − …”

Section: Resultssupporting

confidence: 75%

Acid-Corrosion-Induced Hollow-Structured NiFe-Layered Double Hydroxide Electrocatalysts for Efficient Water Oxidation

Wang

Lin

et al. 2021

ACS Appl. Energy Mater.

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Highly active, cost-effective, and stable electrocatalyst for oxygen evolution reaction (OER) is of primary importance in electrochemical water splitting. Although the direct growth of active components on the substrate is an effective strategy to enhance the catalytic activity, the weak adhesion between active material and substrate tremendously hampers their long-term utilization with excellent performance. Herein, a three-dimensional (3D) hollow structure of NiFe-layered double hydroxide (NiFe LDH) on NiFe foam (NiFe LDH@NiFe) is designed via acid-corrosion-induced strategy. The self-supported electrode was obtained through a process based on an autologous NiFe foam, in which the electrode/gas/electrolyte interface and electrocatalyst/substrate interface are delicately engineered. Remarkably, the NiFe LDH@NiFe only needs an ultralow overpotential of 201 mV to deliver a current density of 10 mA cm–2 for OER in 1 M KOH electrolyte, along with superb stability. The high catalytic activity is attributed to the intimate connection between the nanosheet arrays and substrate, superior intrinsic activity, and fast electron transfer. More importantly, the excellent hydrophilicity and aerophobicity of NiFe LDH@NiFe enables significantly improved infiltration of electrolytes, quick release of oxygen bubbles, and remarkably enhanced charge transfer. Thus, the obtained NiFe LDH@NiFe holds promise for electrocatalytic applications. Finally, the growth mechanism of NiFe LDH@NiFe is investigated and discussed in detail.

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Section: Resultssupporting

confidence: 75%

Acid-Corrosion-Induced Hollow-Structured NiFe-Layered Double Hydroxide Electrocatalysts for Efficient Water Oxidation

Wang

Lin

et al. 2021

ACS Appl. Energy Mater.

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“…66 Such a high performance and low-cost F-FeCoNi-Ov LDH/NF electrocatalyst can be considered as a prominent candidate for overall water splitting to produce hydrogen gas. Besides, the comparisons of the water oxidation performance between this work and other reports [67][68][69][70][71][72][73][74][75] are listed in Fig. 9d.…”

Section: Overall Water Splittingmentioning

confidence: 84%

Layered FeCoNi double hydroxides with tailored surface electronic configurations induced by oxygen and unsaturated metal vacancies for boosting the overall water splitting process

Zhai

Zhang

2022

Nanoscale

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“…The prepared carbon microspheres exhibit low cost, high capacity at low potential, outstanding multiplicative properties, and excellent cycling stability. In addition, Hu et al [ 62 ] prepared self-supported Ni 3 Se 2 @NiFe-LDH/NF catalysts by hydrothermal heating at 160 °C for 24 h and electrodeposition. The analysis showed that the catalysts had good electrical conductivity, large surface area, good electron transfer capacity, and abundant active sites, and showed good HER electrocatalytic activity in alkaline media.…”

Section: Synthesis and Preparation Of Graphenementioning

confidence: 99%

Recent Progress in Graphene-Based Electrocatalysts for Hydrogen Evolution Reaction

et al. 2022

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Hydrogen is regarded as a key renewable energy source to meet future energy demands. Moreover, graphene and its derivatives have many advantages, including high electronic conductivity, controllable morphology, and eco-friendliness, etc., which show great promise for electrocatalytic splitting of water to produce hydrogen. This review article highlights recent advances in the synthesis and the applications of graphene-based supported electrocatalysts in hydrogen evolution reaction (HER). Herein, powder-based and self-supporting three-dimensional (3D) electrocatalysts with doped or undoped heteroatom graphene are highlighted. Quantum dot catalysts such as carbon quantum dots, graphene quantum dots, and fullerenes are also included. Different strategies to tune and improve the structural properties and performance of HER electrocatalysts by defect engineering through synthetic approaches are discussed. The relationship between each graphene-based HER electrocatalyst is highlighted. Apart from HER electrocatalysis, the latest advances in water electrolysis by bifunctional oxygen evolution reaction (OER) and HER performed by multi-doped graphene-based electrocatalysts are also considered. This comprehensive review identifies rational strategies to direct the design and synthesis of high-performance graphene-based electrocatalysts for green and sustainable applications.

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Self-supported Ni3Se2@NiFe layered double hydroxide bifunctional electrocatalyst for overall water splitting

Cited by 113 publications

References 55 publications

Acid-Corrosion-Induced Hollow-Structured NiFe-Layered Double Hydroxide Electrocatalysts for Efficient Water Oxidation

Acid-Corrosion-Induced Hollow-Structured NiFe-Layered Double Hydroxide Electrocatalysts for Efficient Water Oxidation

Layered FeCoNi double hydroxides with tailored surface electronic configurations induced by oxygen and unsaturated metal vacancies for boosting the overall water splitting process

Recent Progress in Graphene-Based Electrocatalysts for Hydrogen Evolution Reaction

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