Deciphering the alternating synergy between interlayer Pt single-atom and NiFe layered double hydroxide for overall water splitting

Chen, Wei; Wu, Binbin; Wang, Yanyong; Zhou, Wang; Li, Yingying; Liu, Tianyang; Xie, Chao; Xu, Lei; Du, Shiqian; Song, Minglei; Wang, Dongdong; liu, Yanbo; Li, Yefei; Liu, Jilei; Zou, Yuqin; Chen, Ru; Chen, Chen; Zheng, Jianyun; Li, Yafei; Chen, Jun; Wang, Shuangyin

doi:10.1039/d1ee01395e

Cited by 231 publications

(161 citation statements)

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“…It is worth mentioning that one of the first reports, in 1983, on the electrocatalytic performance of metal hydroxides, revealed a good OER activity of α-Ni(OH) 2 [57], and it was further confirmed that the Fe impurities in the α-Ni(OH) 2 greatly lower the OER overpotential [58,59]. Since then, the LDHs of 3d iron group metals (Fe, Co and Ni)-such as Ni-Fe [60][61][62][63][64], Ni-Co [65][66][67][68], Co-Ni [69][70][71], Fe-Ni [72][73][74], Fe-Co [75][76][77][78], and Co-Co [79][80][81][82]-and the corresponding derivatives-e.g., NiFe 2 O 4 [83][84][85][86], CoFe 2 O 4 [87], NiCo 2 O 4 [88,89], and Co 3 O 4 [90][91][92]-have been employed as OER or bifunctional ORR/OER electrocatalysts with high kinetics in alkaline solution.…”

Section: Introductionmentioning

confidence: 94%

Recent Progress on Transition Metal Based Layered Double Hydroxides Tailored for Oxygen Electrode Reactions

et al. 2021

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The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), namely, so-called oxygen electrode reactions, are two fundamental half-cell reactions in the energy storage and conversion devices, e.g., zinc–air batteries and fuel cells. However, the oxygen electrode reactions suffer from sluggish kinetics, large overpotential and complicated reaction paths, and thus require efficient and stable electrocatalysts. Transition-metal-based layered double hydroxides (LDHs) and their derivatives have displayed excellent catalytic performance, suggesting a major contribution to accelerate electrochemical reactions. The rational regulation of electronic structure, defects, and coordination environment of active sites via various functionalized strategies, including tuning the chemical composition, structural architecture, and topotactic transformation process of LDHs precursors, has a great influence on the resulting electrocatalytic behavior. In addition, an in-depth understanding of the structural performance and chemical-composition-performance relationships of LDHs-based electrocatalysts can promote further rational design and optimization of high-performance electrocatalysts. Finally, prospects for the design of efficient and stable LDHs-based materials, for mass-production and large-scale application in practice, are discussed.

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Section: Introductionmentioning

confidence: 94%

Recent Progress on Transition Metal Based Layered Double Hydroxides Tailored for Oxygen Electrode Reactions

et al. 2021

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“…Except for LDHs with Ru single atoms, Pt single atoms into Ni 3 Fe LDH (Ni 3 Fe LDH‐Pt SA) was prepared via a two‐step strategy with anion exchange and space‐confined electroreduction [19] . Ni 3 Fe LDH‐Pt SA catalyst brought outstanding HER performance with overpotential of 45 mV at 10 mA cm −2 and Tafel slope of 37.8 mV dec −1 , which is better than commercial 20 wt% Pt/C with 51 mV and 41.7 mV dec −1 , respectively.…”

Section: Ldh‐based Materials As Her Electrocatalystmentioning

confidence: 99%

Recent Progress in Layered Double Hydroxide‐Based Electrocatalyst for Hydrogen Evolution Reaction

Chen

et al. 2022

ChemElectroChem

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HER performance. Herein, the principal mechanisms and some key parameters for HER are firstly briefly introduced. Afterwards, the structural features and characteristics of LDHs are provided, and the typical design strategies to improve the HER activity of binary and ternary LDHs-based catalysts are analyzed and discussed. In addition, the relationship between the morphology, structure, composition and involved electronic effects are focused and emphasized. Finally, the challenges and prospects of LDHs-based catalysts for enhanced HER performance are proposed.

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“…Thereinto, CPE 1 and R 1 (represent electron transferability), CPE 2 and R 2 (represent Volmer step), CPE 3 and R 3 (represent Heyrovsky step) are presented in HER conditions. [29] Wherein, given the low-frequency relaxation decreased rapidly and shifted to higher frequencies at higher potential, CPE 2 and R 2 can be omitted at high potential, and the equivalent circuit model can be simplified accordingly (Figure S30 and S31).…”

Section: Forschungsartikelmentioning

confidence: 99%

Electrocatalytic Hydrogenation of 5‐Hydroxymethylfurfural Promoted by a Ru₁Cu Single‐Atom Alloy Catalyst

et al. 2022

Angewandte Chemie

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Electrochemical reduction of biomass-derived 5-hydroxymethylfurfural (HMF) represents an elegant route toward sustainable value-added chemicals production that circumvents the use of fossil fuel and hydrogen. However, the reaction efficiency is hampered by the high voltage and low activity of electrodes (Cu, Bi, Pb). Herein, we report a Ru 1 Cu single-atom alloy (SAA) catalyst with isolated Ru atoms on Cu nanowires that exhibits an electrochemical reduction of HMF to 2,5dihydroxymethylfuran (DHMF) with promoted productivity (0.47 vs. 0.08 mmol cm À 2 h À 1 ) and faradic efficiency (FE) (85.6 vs. 71.3 %) at À 0.3 V (vs. RHE) compared with Cu counterpart. More importantly, the FE (87.5 %) is largely retained at high HMF concentration (100 mM). Kinetic studies by using combined electrochemical techniques suggest disparate mechanisms over Ru 1 Cu and Cu, revealing that single-atom Ru promotes the dissociation of water to produce H* species that effectively react with HMF via an electrocatalytic hydrogenation (ECH) mechanism.

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Deciphering the alternating synergy between interlayer Pt single-atom and NiFe layered double hydroxide for overall water splitting

Abstract: Single-atom catalysts (SACs) have enormous significance for heterogeneous catalysis. However, understanding how SACs function at molecular level remains as a huge challenge. Here, we report a general approach to anchor...

Cited by 231 publications

References 58 publications

Recent Progress on Transition Metal Based Layered Double Hydroxides Tailored for Oxygen Electrode Reactions

Recent Progress on Transition Metal Based Layered Double Hydroxides Tailored for Oxygen Electrode Reactions

Recent Progress in Layered Double Hydroxide‐Based Electrocatalyst for Hydrogen Evolution Reaction

Electrocatalytic Hydrogenation of 5‐Hydroxymethylfurfural Promoted by a Ru₁Cu Single‐Atom Alloy Catalyst

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Deciphering the alternating synergy between interlayer Pt single-atom and NiFe layered double hydroxide for overall water splitting

Abstract: Single-atom catalysts (SACs) have enormous significance for heterogeneous catalysis. However, understanding how SACs function at molecular level remains as a huge challenge. Here, we report a general approach to anchor...

Cited by 231 publications

References 58 publications

Recent Progress on Transition Metal Based Layered Double Hydroxides Tailored for Oxygen Electrode Reactions

Recent Progress on Transition Metal Based Layered Double Hydroxides Tailored for Oxygen Electrode Reactions

Recent Progress in Layered Double Hydroxide‐Based Electrocatalyst for Hydrogen Evolution Reaction

Electrocatalytic Hydrogenation of 5‐Hydroxymethylfurfural Promoted by a Ru1Cu Single‐Atom Alloy Catalyst

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Electrocatalytic Hydrogenation of 5‐Hydroxymethylfurfural Promoted by a Ru₁Cu Single‐Atom Alloy Catalyst