Benzoate anions-intercalated NiFe-layered double hydroxide nanosheet array with enhanced stability for electrochemical seawater oxidation

Zhang, Longcheng; Liang, Jie; Yue, Luchao; Dong, Kai; Li, Jun; Zhao, Donglin; Li, Zerong; Sun, Shengjun; Luo, Yongsong; Liu, Qian; Cui, Guanwei; Alshehri, Abdulmohsen Ali; Guo, Xiaodong; Sun, Xuping

doi:10.26599/nre.2022.9120028

Cited by 255 publications

(167 citation statements)

References 55 publications

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“…The electrochemically active surface area (ECSA) of Ni SAs@S/N-FCS is further investigated by calculating the electrochemical double-layer capacitance (C dl ). [36][37][38] As expected, the Ni SAs@S/N-FCS catalyst possesses more available active sites with a C dl value of 2.63 mF cm À 2 (Figure 4e; Figure S22, Supporting Information), which is about 8.5 times that of Ni NPs@S/N-FCS (0.31 mF cm À 2 ). Electrochemical impedance spectroscopy (EIS) analysis reveals that the Ni SAs@S/N-FCS catalyst shows a smaller charge transfer resistance than Ni NPs@S/N-FCS and Ni-free S/N-FCS, indicating a faster charge-transfer process for Ni SAs@S/N-FCS during OER (Figure S23, Supporting Information), in line with the Tafel slope results.…”

Section: Methodssupporting

confidence: 60%

Surface‐Exposed Single‐Ni Atoms with Potential‐Driven Dynamic Behaviors for Highly Efficient Electrocatalytic Oxygen Evolution

Zhao

Fan

et al. 2022

Angew Chem Int Ed

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Trapping the active sites on the exterior surface of hollow supports can reduce mass transfer resistance and enhance atomic utilization. Herein, we report a facile chemical vapor deposition strategy to synthesize single‐Ni atoms decorated hollow S/N‐doped football‐like carbon spheres (Ni SAs@S/N‐FCS). Specifically, the CdS@3‐aminophenol/formaldehyde is carbonized into S/N‐FCS. The gas‐migrated Ni species are anchored on the surface of S/N‐FCS simultaneously, yielding Ni SAs@S/N‐FCS. The obtained catalyst exhibits outstanding performance for alkaline oxygen evolution reaction (OER) with an overpotential of 249 mV at 10 mA cm−2, a small Tafel slope of 56.5 mV dec−1, and ultra‐long stability up to 166 hours without obvious fading. Moreover, the potential‐driven dynamic behaviors of Ni‐N4 sites and the contribution of the S dopant at different locations in the matrix to the OER activity are revealed by the operando X‐ray absorption spectroscopy and theoretical calculations, respectively.

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Section: Methodssupporting

confidence: 60%

Surface‐Exposed Single‐Ni Atoms with Potential‐Driven Dynamic Behaviors for Highly Efficient Electrocatalytic Oxygen Evolution

Zhao

Fan

et al. 2022

Angew Chem Int Ed

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“…Using machine learning techniques to predict the optimal composition/structure of ADMCs and reaction pathways on various possible materials through some key descriptors (e.g., d-band center and adsorption energies), is a promising approach for exploring efficient CO 2 RR/OER bifunctional catalysts. [77,[131][132][133][134][135][136][137][138][139][140][141][142][143][144][145] Moreover, the combination of theoretical calculation and advanced in-situ/operand characterization techniques, such as in situ X-ray absorption spectroscopy (XAS) and in situ ambient-pressure X-ray photoelectron spectroscopy (AP-XPS), is urgently needed for the comprehensive understanding of the structure-activity/selectivity relationships.…”

Section: Discussionmentioning

confidence: 99%

Atomically Dispersed Metal‐Based Catalysts for Zn–CO₂Batteries

et al. 2022

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Rechargeable aqueous Zn–CO2 batteries show great promise in meeting severe environmental problems and energy crises due to their combination of CO2 utilization and energy output, as well as advantages of high theoretical energy density, abundant raw materials, and high safety. Developing high‐efficiency and stable CO2 reduction reaction (CO2RR) electrocatalysts is of critical importance for the promotion of this technology. Atomically dispersed metal‐based catalysts (ADMCs), with extremely high atom‐utilization efficiency, tunable coordination environments, and superior intrinsic catalytic activity, are emerging as promising candidates for Zn–CO2 batteries. Herein, some recent developments in atomically dispersed metal‐based catalysts for Zn–CO2 batteries are summarized, including transition metal and non‐transition metal sites. Moreover, various synthetic strategies, characterization methods, and the relationship between active site structures and CO2RR activity/Zn–CO2 battery performance are introduced. Finally, some challenges and perspectives are also proposed for the future development of ADMCs in Zn–CO2 batteries.

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“…Nevertheless, large-scale water electrolysis would doubtlessly exacerbate the shortage of freshwater. In contrast, the proportion of seawater is ~96.5% of the Earth’s water supply, making it have huge potential for large-scale H 2 generation [ 16 , 17 , 18 , 19 , 20 ]. For hydrogen evolution reaction (HER), Pt-based materials are the most efficient catalysts, but the rareness and high cost heavily obstruct their practical applications.…”

Section: Introductionmentioning

confidence: 99%

Amorphous Co-Mo-B Film: A High-Active Electrocatalyst for Hydrogen Generation in Alkaline Seawater

et al. 2022

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The development of efficient electrochemical seawater splitting catalysts for large-scale hydrogen production is of great importance. In this work, we report an amorphous Co-Mo-B film on Ni foam (Co-Mo-B/NF) via a facile one-step electrodeposition process. Such amorphous Co-Mo-B/NF possesses superior activity with a small overpotential of 199 mV at 100 mA cm−2 for a hydrogen evolution reaction in alkaline seawater. Notably, Co-Mo-B/NF also maintains excellent stability for at least 24 h under alkaline seawater electrolysis.

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Benzoate anions-intercalated NiFe-layered double hydroxide nanosheet array with enhanced stability for electrochemical seawater oxidation

Cited by 255 publications

References 55 publications

Surface‐Exposed Single‐Ni Atoms with Potential‐Driven Dynamic Behaviors for Highly Efficient Electrocatalytic Oxygen Evolution

Surface‐Exposed Single‐Ni Atoms with Potential‐Driven Dynamic Behaviors for Highly Efficient Electrocatalytic Oxygen Evolution

Atomically Dispersed Metal‐Based Catalysts for Zn–CO₂Batteries

Amorphous Co-Mo-B Film: A High-Active Electrocatalyst for Hydrogen Generation in Alkaline Seawater

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Benzoate anions-intercalated NiFe-layered double hydroxide nanosheet array with enhanced stability for electrochemical seawater oxidation

Cited by 255 publications

References 55 publications

Surface‐Exposed Single‐Ni Atoms with Potential‐Driven Dynamic Behaviors for Highly Efficient Electrocatalytic Oxygen Evolution

Surface‐Exposed Single‐Ni Atoms with Potential‐Driven Dynamic Behaviors for Highly Efficient Electrocatalytic Oxygen Evolution

Atomically Dispersed Metal‐Based Catalysts for Zn–CO2Batteries

Amorphous Co-Mo-B Film: A High-Active Electrocatalyst for Hydrogen Generation in Alkaline Seawater

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Atomically Dispersed Metal‐Based Catalysts for Zn–CO₂Batteries