Core-shell structured NiTe@FeOOH nanoarrays for efficient overall seawater splitting

Gao, Xiaohong; Chen, Jieli; Yu, Yanhui; Wang, Fangyuan; Wu, Xiao; Wang, Xingbo; Mao, Weihua; Li, Jing; Huang, Wei; Chen, Qi; Li, Ruisong; You, Chenghang; Wang, Shaolei; Tian, Xinlong; Kang, Zhenye

doi:10.1016/j.cej.2023.145568

Cited by 21 publications

(3 citation statements)

References 36 publications

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“…19 For instance, Li et al disclosed the design of NiTe@FeOOH hybrid nanorods on nickel foam (NF) as an electrocatalyst for OER, but this method is more complicated. 20,21 In contrast, Wang et al reported a γ-FeOOH/NF nanosheet array synthesized using a kinetic strategy as an electrocatalyst for OER, but the overpotential and stability were still unsatisfactory at high current densities. 22 Another approach to improve the performance of OER is to construct nickel/iron hydroxide heterostructures.…”

Section: ■ Introductionmentioning

confidence: 99%

“…One effective approach is to construct array nanostructures on conductive substrates, which not only improves the stability of the materials and prevents the aggregation of nanomaterials but also enhances their electrical conductivity . For instance, Li et al disclosed the design of NiTe@FeOOH hybrid nanorods on nickel foam (NF) as an electrocatalyst for OER, but this method is more complicated. , In contrast, Wang et al. reported a γ-FeOOH/NF nanosheet array synthesized using a kinetic strategy as an electrocatalyst for OER, but the overpotential and stability were still unsatisfactory at high current densities .…”

Section: Introductionmentioning

confidence: 99%

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In-situ Growth of Scalable Low-Crystalline γ-FeOOH@Ni(OH)₂ Nanosheet Heterostructured Catalysts for Stable Oxygen Evolution Reaction at Large Current Density

Liu,

Wu,

et al. 2024

ACS Sustainable Chem. Eng.

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Transition metal hydroxides have the advantage of high activity and low cost in alkaline electrolytes and are considered one of the most promising catalysts for anodic oxygen evolution reaction (OER). However, single nickel or iron hydroxides is unstable during the reaction process and have a tendency to agglomerate and poor electrical conductivity. Therefore, we designed a kinetically controlled liquid-phase method to synthesize scalable low-crystalline γ-FeOOH@Ni(OH) 2 nanosheet arrays on nickle foam (NF) in an open environment. By adjusting the alkalinity and reaction time, we systematically investigated the formation process and the potential mechanisms related to the structural evolution of γ-FeOOH@Ni(OH) 2 catalysts. γ-FeOOH@Ni(OH) 2 was used as an OER catalyst and showed excellent hydrolytic activity and stability, with a stable operation of more than 320 h at a large current density of 500 mA cm −2 . Density functional theory calculations show that the synergistic effect of γ-FeOOH and Ni(OH) 2 increases the charge accumulation near the Fermi energy level, thus increasing the chance of electron transfer and effectively facilitating the decomposition of water molecules. This work provides a new strategy for the design and exploration of catalysts for achieving large-scale industrialized water decomposition for hydrogen production in an open environment.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In-situ Growth of Scalable Low-Crystalline γ-FeOOH@Ni(OH)₂ Nanosheet Heterostructured Catalysts for Stable Oxygen Evolution Reaction at Large Current Density

Liu,

Wu,

et al. 2024

ACS Sustainable Chem. Eng.

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“…In this context, there has been a surge in research to explore earth-abundant transition metal-based materials as cost-effective bifunctional electrocatalysts for electrocatalytic seawater splitting, including oxides, 21,22 hydroxides, 23,24 sulfides, 19 phosphides, 25,26 nitrides, 27 etc. In particular, transition metal phosphides (TMPs) with excellent catalytic activity and good corrosion resistance have been widely reported as efficient bifunctional electrocatalysts for overall seawater splitting, for instance, Mo–CoP x , 28 Fe–Ni 2 P, 29 and Co–Fe 2 P. 30 Significantly, the negatively charged P in TMPs enhances water molecule splitting into H* or OH*, and optimizes the free energy of adsorbed hydrogen atoms, thus boosting the catalytic efficiency.…”

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confidence: 99%

Three-dimensional porous NiCoP foam enabled high-performance overall seawater splitting at high current density

He,

Cai,

Zheng

et al. 2024

J. Mater. Chem. A

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Hetero MOF‐On‐MOF of Ni‐BDC/NH₂‐MIL‐88B(Fe) Enables Efficient Electrochemical Seawater Oxidation

Bao,

Ru,

Wang

et al. 2024

Adv Funct Materials

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Seawater electrolysis is a sustainable technology for producing hydrogen that would neither cause global freshwater shortages nor create carbon emissions. However, this technology is severely hampered by the insufficient stability and the competition from the chlorine evolution reaction (ClER) in actual application. Herein, a metal–organic framework (MOF)‐on‐MOF heterojunction (Ni‐BDC/NH2‐MIL‐88B(Fe)) denoted as (Ni‐BDC/NM88B(Fe)) is synthesized as an effective oxygen evolution reaction (OER) electrocatalyst for high‐performance seawater electrolysis, which exhibits a long stability of 200 h and low overpotentials of 232 and 299 mV at 100 mA cm−2 in alkaline freshwater and seawater solution, respectively. The exceptional performance is attributed to the rapid self‐reconstruction of Ni‐BDC/NM88B(Fe) to produce NiFeOOH protective layer, thereby avoiding ClER‐induced dissolution. Moreover, the interface interaction between Ni‐BDC and NM88B(Fe) could form the Ni─O─Fe bonds in Ni‐BDC/NM88B(Fe) to promote the electron transfer and lower the energy barrier of the rate‐determining step, thereby accelerating the OER. These electrochemical properties make it intriguing candidate as an efficient electrocatalyst for practical alkaline seawater electrolysis.

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Core-shell structured NiTe@FeOOH nanoarrays for efficient overall seawater splitting

Cited by 21 publications

References 36 publications

In-situ Growth of Scalable Low-Crystalline γ-FeOOH@Ni(OH)₂ Nanosheet Heterostructured Catalysts for Stable Oxygen Evolution Reaction at Large Current Density

In-situ Growth of Scalable Low-Crystalline γ-FeOOH@Ni(OH)₂ Nanosheet Heterostructured Catalysts for Stable Oxygen Evolution Reaction at Large Current Density

Three-dimensional porous NiCoP foam enabled high-performance overall seawater splitting at high current density

Hetero MOF‐On‐MOF of Ni‐BDC/NH₂‐MIL‐88B(Fe) Enables Efficient Electrochemical Seawater Oxidation

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Core-shell structured NiTe@FeOOH nanoarrays for efficient overall seawater splitting

Cited by 21 publications

References 36 publications

In-situ Growth of Scalable Low-Crystalline γ-FeOOH@Ni(OH)2 Nanosheet Heterostructured Catalysts for Stable Oxygen Evolution Reaction at Large Current Density

In-situ Growth of Scalable Low-Crystalline γ-FeOOH@Ni(OH)2 Nanosheet Heterostructured Catalysts for Stable Oxygen Evolution Reaction at Large Current Density

Three-dimensional porous NiCoP foam enabled high-performance overall seawater splitting at high current density

Hetero MOF‐On‐MOF of Ni‐BDC/NH2‐MIL‐88B(Fe) Enables Efficient Electrochemical Seawater Oxidation

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In-situ Growth of Scalable Low-Crystalline γ-FeOOH@Ni(OH)₂ Nanosheet Heterostructured Catalysts for Stable Oxygen Evolution Reaction at Large Current Density

In-situ Growth of Scalable Low-Crystalline γ-FeOOH@Ni(OH)₂ Nanosheet Heterostructured Catalysts for Stable Oxygen Evolution Reaction at Large Current Density

Hetero MOF‐On‐MOF of Ni‐BDC/NH₂‐MIL‐88B(Fe) Enables Efficient Electrochemical Seawater Oxidation