Ni-based 3D hierarchical heterostructures achieved by selective electrodeposition as a bifunctional electrocatalyst for overall water splitting

Li, Youjun; Dastafkan, Kamran; Sun, Qiangqiang; Ma, Yi; Wang, Xiuhang; Yang, Xueying; Wang, Zenglin; Zhao, Chuan

doi:10.1016/j.electacta.2021.138042

Cited by 28 publications

(18 citation statements)

References 55 publications

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“…At the same current density, the CFN@VSB-5/NF electrode requires far smaller overpotential than the FN@VSB-5/NF electrode, indicating that the integration of Ce 3+ ions significantly increases the intrinsic activity of the catalyst. Similar experimental phenomena have been reported in previous refs and . In addition, we investigated the mass activities of various electrodes.…”

Section: Resultssupporting

confidence: 77%

Ce-Doped FeNi-Layered Double Hydroxide Nanosheets Grown on an Open-Framework Nickel Phosphate Nanorod Array for Oxygen Evolution Reaction

Liu

Wang

et al. 2021

ACS Appl. Energy Mater.

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The doping of foreign atoms into the electrocatalyst can effectively adjust the electronic structure and further improve the electrocatalytic activity. Here, we constructed a threedimensional integrated electrode of Ce-doped FeNi LDH (LDH, layered double hydroxide) with an amorphous structure on a Ni foam-supported open-framework nickel phosphate nanorods array (donated as CFN@VSB-5/NF) via a hydrothermal-electrodeposition two-step process. The as-constructed CFN@VSB-5/ NF electrocatalyst merely required an overpotential of 226 mV to generate a current density of 100 mA cm −2 with a Tafel slope of 43.1 mV dec −1 , which was remarkably lower than FN@VSB-5/NF (η 100 = 273 mV) without the addition of Ce. Also, the CFN@VSB-5/NF could continuously catalyze for 50 h at a current density of 500 mA cm −2 without obvious potential fluctuation, presenting appealing durability at a large current density. Further investigations revealed that the superior oxygen evolution reaction (OER) electrocatalytic performance should be attributed to the high intrinsic activity, optimal surface, and electronic structure of the as-constructed CFN@VSB-5/NF catalyst. Compared with the traditional FeNi-based catalysts, moreover, the present CFN@VSB-5/NF-integrated electrocatalyst also displayed stronger OER electrocatalytic activity and excellent stability at large current densities. Markedly, this work provides a path for constructing non-noble metal electrocatalysts with high OER activity.

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Section: Resultssupporting

confidence: 77%

Ce-Doped FeNi-Layered Double Hydroxide Nanosheets Grown on an Open-Framework Nickel Phosphate Nanorod Array for Oxygen Evolution Reaction

Liu

Wang

et al. 2021

ACS Appl. Energy Mater.

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“…Therefore, whether in monometal or alloy states, they are usually embedded in or decorated with relatively stable substrates (such as carbon materials, NF, and Cu foam). 130 As shown in Fig. 12a, Hang et al 131 prepared a highly efficient NiFe alloy OER electrocatalyst using NF as the substrate via one-step electrodeposition.…”

Section: Metals/alloysmentioning

confidence: 99%

Electrochemical preparation of nano/micron structure transition metal-based catalysts for the oxygen evolution reaction

Han

Zhao

et al. 2022

Mater. Horiz.

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“…118 Raut et al obtained a carbonaceous electrode material in vertically grown nanosheets formed via coconut water onto 3D-Ni-foam as C@Ni-foam, which evidenced OER and HER over potentials of activity with 219 and 122 mV, respectively, and 27 and 53 mV dec À1 Tofel slopes, suggested a bifunctional efficacy of electrode materials and synthesis method, ie, spray pyrolysis. 119 120 Further, honeycomb-like heterostructure fabricated by a threestep electrodeposition/dealloying/electrodeposition strategy was composed of NiFe shell and Ni(Cu) nanotubes, as an efficient and robust bifunctional electrocatalyst for overall water splitting. 3 The as-prepared NiFe@Ni(Cu)/ NF bifunctional catalyst adduced extremely low and competitive overpotentials to achieve a current density of 10 mA cm À2 for HER and OER.…”

Section: Bifunctional Catalystsmentioning

confidence: 99%

“…The XRD and Raman shift measurements revealed the formation of Ni/NiO with Ni/Ni(OH) 2 /NiOOH, which were unavoidable dominant phases. The metallic Ni(O) sites of Ni/NiO attracted and adsorbed H* while neighboring NiO sites attracted OH* at lower overpotential 120 . Further, honeycomb‐like heterostructure fabricated by a three‐step electrodeposition/dealloying/electrodeposition strategy was composed of NiFe shell and Ni(Cu) nanotubes, as an efficient and robust bifunctional electrocatalyst for overall water splitting 3 .…”

Section: Recent Advances In Ni‐based Electrocatalystmentioning

confidence: 99%

Recent advances in non‐precious Ni‐based promising catalysts for water splitting application

Bulakhe

Shinde

Kim

et al. 2022

Intl J of Energy Research

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Summary The creation of hydrogen and oxygen from water can be a paramount way to produce clean fuel through Earth‐abundant and non‐precious photoelectrochemical (solar to hydrogen production) and electrocatalysis processes. Since two decades, nickel (Ni)‐based electrocatalysts are being extensively applied as bifunctional electrocatalysts. Here, recent advances of Ni‐based catalysts in electrochemistry for water splitting application through oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) processes with evaluation parameters like dependency of the current density on the applied potential, overpotentials, and Tafel plots, etc., are brushed in brief. Various synthesis methods have also been reported with structural variations to identify the final active structure. Furthermore, based on previously published work on both OER and HER activities, disputes and outlook perspectives of Ni‐based electrolytes in the water splitting process are highlighted in succinct.

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Ni-based 3D hierarchical heterostructures achieved by selective electrodeposition as a bifunctional electrocatalyst for overall water splitting

Cited by 28 publications

References 55 publications

Ce-Doped FeNi-Layered Double Hydroxide Nanosheets Grown on an Open-Framework Nickel Phosphate Nanorod Array for Oxygen Evolution Reaction

Ce-Doped FeNi-Layered Double Hydroxide Nanosheets Grown on an Open-Framework Nickel Phosphate Nanorod Array for Oxygen Evolution Reaction

Electrochemical preparation of nano/micron structure transition metal-based catalysts for the oxygen evolution reaction

Recent advances in non‐precious Ni‐based promising catalysts for water splitting application

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