Recent advances of two-dimensional CoFe layered-double-hydroxides for electrocatalytic water oxidation

Zhou, Yi; Hu, Jialai; Yang, Lichun; Gao, Qingsheng

doi:10.1016/j.cclet.2021.10.034

Cited by 26 publications

(12 citation statements)

References 88 publications

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“…Because of these advantages, LDH with anion intercalation always exhibits an excellent activity and stability in water splitting. The layer distance between LDH materials can be also easily tuned by the organic small molecules, in which the organic small molecules efficiently weaken the interlayer interaction of LDH materials, thus leading to the enhanced electrocatalytic activity [122][123][124]. Gao's group reported that CoFe-LDH materials with a large interlayer distance of 0.6 nm were prepared in the ethanol solution using ammonium bicarbonate (NH4HCO3) as a pH regulator [122].…”

Section: Gu Et Al Realized the Preparation Of Intercalation-induced P...mentioning

confidence: 99%

Recent Advances of Modified Ni (Co, Fe)-based LDH 2D Materials for Water Splitting

Li¹,

Bao²,

Liu³

et al. 2023

Preprint

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Water splitting technology is an efficient approach to generate hydrogen (H2) energy, which can well address the problems of environmental deterioration and energy shortage, as well as establishment of a clean and sustainable hydrogen economy powered by renewable energy sources due to the green reaction of H2 with O2. While the efficiency of H2 production by water splitting technology is intimately related with the reactions on electrode. Nowadays, the efficient electrocatalysts in water splitting reactions are the precious metal-based materials, i.e., Pt/C, RuO2 and IrO2. Ni (Co, Fe)-based layered double hydroxides (LDH) 2D materials are the typical non-precious metal-based materials in water splitting with advantages of low cost, excellent electrocatalytic performance and simple preparation methods, which exhibits a great potential for the substitution for precious metal-based materials. This review summarizes the recent progress of Ni (Co, Fe)-based LDH 2D materials for water splitting, which mainly focuses on discussing and analyzing the different strategies to modify LDH materials towards high electrocatalytic performance. We also discuss the recent achievements including their electronic structure, electrocatalytic performance, catalytic center, preparation process and catalytic mechanism. Furthermore, the characterization progress in revealing electronic structure and catalytic mechanism of LDH is highlighted in this review. Finally, we put forward some future perspectives related to design and explore advanced LDH catalysts in water splitting.

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Section: Gu Et Al Realized the Preparation Of Intercalation-induced P...mentioning

confidence: 99%

Recent Advances of Modified Ni (Co, Fe)-based LDH 2D Materials for Water Splitting

Li¹,

Bao²,

Liu³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…9 However, it is still difficult to manipulate such dynamic evolution and the in situ-formed active surface species because of the sluggish reconfiguration of the electrolyte-nonpermeable solid surface. 10,11 To promote the in situ formation of active (oxy)hydroxides toward the reaction-preferred surface, an effective activation of transitionmetal electrocatalysts via tuning surface/interfacial interactions is highly desired. 12−14 Ceria (CeO 2 ) with the flexible transition between Ce 3+ and Ce 4+ oxidation states can serve as the promoter for a variety of electrocatalysis because its good electronic/ionic conductivity and rich oxygen defects in lattices enable the strong interactions and available synergies with the host surface.…”

Section: Introductionmentioning

confidence: 99%

“…The oxidation-driven reconstruction in situ generates the corresponding (oxy)hydroxides as actual active species, showing a positive correlation of activity with the oxidation current prior to OER occurrence . However, it is still difficult to manipulate such dynamic evolution and the in situ -formed active surface species because of the sluggish reconfiguration of the electrolyte-nonpermeable solid surface. , To promote the in situ formation of active (oxy)hydroxides toward the reaction-preferred surface, an effective activation of transition-metal electrocatalysts via tuning surface/interfacial interactions is highly desired. − …”

Section: Introductionmentioning

confidence: 99%

Ceria-Promoted Reconstruction of Ni-Based Electrocatalysts toward Efficient Oxygen Evolution

et al. 2022

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Modulating the dynamic change of catalysts is significant for understanding the mechanism and exploiting better electrocatalysts but remains challenging in oxygen evolution reaction (OER). Herein, ceria-promoted reconstruction of Ni-X (X = S, P, and O) is investigated to unravel the correlation between the reconstructed surface and the OER performance, which further guides the design of prominent electrocatalysts. Interfacial CeO 2 promotes the in situ reconfiguration of Ni-X via strengthening hydroxyl adsorption, generating highly active CeO 2 -NiOOH interfaces. Moreover, rich oxygen vacancies formed after breaking Ni-S/P bonds and leaching S/P anions render Ni 3 S 2 and Ni 2 P superior to NiO with the same CeO 2 modification, highlighting another dependence on pre-catalyst materials chemistry. Theoretical analysis further confirms that the co-presence of CeO 2 -NiOOH interfaces and oxygen vacancies can harmoniously regulate intermediate chemisorption toward favorable OER kinetics. As a proof of concept, CeO 2 -modified Ni 3 S 2 exhibits low overpotentials of 251 and 364 mV at the current densities of 10 and 100 mA cm −2 in 1.0 M KOH, respectively, performing among the best of recently reported Ni-based counterparts.

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“…Transition-metal (e.g., Co, Fe and Ni) layered double hydroxides (LDH) have emerged as promising electrocatalysts for OER because of their flexible open layer structures, tunable chemical composition, and cost effectiveness [4][5][6]. In particular, the OER activity of bimetallic CoFe LDH is dramatically improved compared to the individual Co and Fe components due to the modulated electronic structures, enhanced charge transfer, and synergistic interactions between Co and Fe [7,8]. However, the bulk CoFe LDH still suffers from both intrinsically weak electronic conductivity and serious aggregation problems.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Sulfate-Intercalated CoFe LDH Nanosheets Derived from Two-Dimensional ZIF-9(III) for Promoted Oxygen Evolution Reaction

et al. 2022

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Layered double hydroxide (LDH) has emerged as a promising electrocatalyst; however, the synthetic method usually requires high temperature and high pressure, and sulfate-intercalated LDH is rarely reported. Herein, the sulfate-intercalated CoFe LDH nanosheets were successfully fabricated at ambient temperature via a facile strategy, using two-dimensional ZIF-9(III) as a template and FeSO4 as both etchant and iron source. When the as-prepared sulfate-intercalated CoFe LDH acts as an electrocatalyst, it presents superior electrocatalytic performance for the oxygen evolution reaction (OER), requiring low overpotential (η@10 mA cm−2 = 218 mV) with a small Tafel slope of 59.9 mV dec−1 in 1.0 M KOH, which compares favorably with commercial RuO2 and most reported transition-metal electrocatalysts. The high catalytic activity of CoFe LDH might be ascribed to the large interlayer space distance originating from special SO42− ions and the strong synergistic effects between Fe and Co. This work provides a novel and feasible approach to designing highly efficient electrocatalysts based on advanced LDH materials for OER.

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Recent advances of two-dimensional CoFe layered-double-hydroxides for electrocatalytic water oxidation

Cited by 26 publications

References 88 publications

Recent Advances of Modified Ni (Co, Fe)-based LDH 2D Materials for Water Splitting

Recent Advances of Modified Ni (Co, Fe)-based LDH 2D Materials for Water Splitting

Ceria-Promoted Reconstruction of Ni-Based Electrocatalysts toward Efficient Oxygen Evolution

Facile Synthesis of Sulfate-Intercalated CoFe LDH Nanosheets Derived from Two-Dimensional ZIF-9(III) for Promoted Oxygen Evolution Reaction

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