Ru-doped 3D flower-like bimetallic phosphide with a climbing effect on overall water splitting

Chen, Ding; Lu, Ruihu; Pu, Zonghua; Zhu, Jiawei; Li, Haiwen; Liu, Fang; Hu, Song; Luo, Xu; Wu, Jinsong; Zhao, Yan; Mu, Shichun

doi:10.1016/j.apcatb.2020.119396

Cited by 272 publications

(135 citation statements)

References 47 publications

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“…The OER performance of CoFe PBA@CoP also exceeds most of the previously reported nonprecious OER electrocatalysts in alkaline media (Table S2, Supporting Information). [44][45][46][47][48][49][50][51][52] The stable amperometric i-t curve (Figure 5d) recorded at an overpotential of 180 mV further verified the extraordinary electrochemical OER stability. The possible mechanism of OER in KOH is displayed in Equation S3-7, Supporting Information.…”

Section: Resultsmentioning

confidence: 83%

Hierarchically Assembling CoFe Prussian Blue Analogue Nanocubes on CoP Nanosheets as Highly Efficient Electrocatalysts for Overall Water Splitting

Zhao

et al. 2021

Small Methods

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At present, to boost the sluggish kinetic of the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), precious Pt and Ir/Ru-based electrocatalysts are usually employed and acknowledged as benchmark in practical application. [3,4] However, their high cost has been considered as an insurmountable barrier. [5] Therefore, numerous efforts have been undertaken to exploit alternative electrocatalysts with cost-effective and high efficiency. [6][7][8] Moreover, bifunctional electrocatalysts are especially important from the technological point of view owing to their facility for cell assembly and reduced manufacture cost accordingly. [9] Among the booming earth-abundant alternatives, including transition metalbased oxide, [10] nitrides, [11] phosphides, [12] and selenides, [13] transition metal phosphides (TMPs) have sparked considerable attention due to their metalloid characteristics and superior electrical conductivity, thus demonstrated as promising bifunctional electrocatalysts. [14] Various approaches have been proposed to enhance the electrocatalytic performance of TMPs from the aspects of incorporation of foreign metal sites or surface coating, for example the preparation of bimetallic phosphide, [15] Cu 3 P coated by a N,Pcodoped carbon shell, [16] and CoP/TiO x heterostructure, [17] etc. Moreover, rational design of a catalyst with favorable electronic and geometric structure is also of prerequisite towards the rapid electron transfer and mass transport. [18] From this perspective, 2D TMPs nanosheets can serve as one of the most prospective candidates owing to their high surface area-to-volume ratio, highly exposed active sites, large contact area with electrolyte. Benefitted from the reduced thickness of TMPs nanosheets, the low-coordinated sites on the catalysts' surface including steps, edges, and kinks will be favorable for electrocatalytic process. [19,20] Nevertheless, due to the shrinkage and fusion caused by stress and decomposition, nanosheets are prone to collapse and thus the impaired electrocatalytic activities limit their application. In this regard, rational design of hierarchical heterostructures based on 2D TMPs nanosheets is highly desirable.Prussian blue (PB) and PB analogues (PBA) formed by coordination interaction between cyanide ligands and metal ions Efficient and durable electrocatalysts are highly desirable for overall water splitting. Herein, a facile strategy is demonstrated to rationally construct CoFe Prussian blue analogues (PBA)@CoP cube-on-sheet hierarchical structure by etching reaction with intermediated CoO to form PBA nanocubes. Benefitting from the heterostructured engineering, the as-synthesized CoFe PBA@CoP presents remarkable electrocatalytic performance in 1.0 m KOH, only requiring overpotentials of 100 mV for hydrogen evolution reaction (HER) and 171 mV for oxygen evolution reaction (OER) to reach the 10 mA cm −2 current density with good stability. Extraordinarily enhanced electrocatalytic performance is ascribed to not only the rapid charge transfer ...

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Section: Resultsmentioning

confidence: 83%

Hierarchically Assembling CoFe Prussian Blue Analogue Nanocubes on CoP Nanosheets as Highly Efficient Electrocatalysts for Overall Water Splitting

Zhao

et al. 2021

Small Methods

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“…In Figure 3 a, the high-resolution spectrum of Ru 3d in Ru-pCo@NC, which partially overlaps with C 1s, can be deconvoluted into Ru 3d 5/2 (281.8 eV) and Ru 3d 3/2 (286.4 eV) of zero-valence Ru (Ru 0 ) [ 29 ], along with C–C/C=C (284.6 eV), C–O/C–N (285.5 eV), and C=O (288.4 eV) [ 30 ]. It is known that the Ru 3p 3/2 and Ru 3p 1/2 peaks of Ru 0 generally appear at 462.5 and 484.9 eV [ 31 ]. From the Ru 3p spectrum of Ru-pCo@NC ( Figure 3 b), the Ru 3p 3/2 and Ru 3p 1/2 peaks have higher binding energies and locate at 463.1 and 485.6 eV, respectively.…”

Section: Resultsmentioning

confidence: 99%

Bimetallic ZIF-Derived Co/N-Codoped Porous Carbon Supported Ruthenium Catalysts for Highly Efficient Hydrogen Evolution Reaction

Guan

Lei

et al. 2021

Nanomaterials

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Exploring the economical, powerful, and durable electrocatalysts for hydrogen evolution reaction (HER) is highly required for practical application. Herein, nanoclusters-decorated ruthenium, cobalt nanoparticles, and nitrogen codoped porous carbon (Ru-pCo@NC) are prepared with bimetallic zeolite imidazole frameworks (ZnCo-ZIF) as the precursor. Thus, the prepared Ru-pCo@NC catalyst with a low Ru loading of 3.13 wt% exhibits impressive HER catalytic behavior in 1 M KOH, with an overpotential of only 30 mV at the current density of 10 mA cm−2, Tafel slope as low as 32.1 mV dec−1, and superior stability for long-time running with a commercial 20 wt% Pt/C. The excellent electrocatalytic properties are primarily by virtue of the highly specific surface area and porosity of carbon support, uniformly dispersed Ru active species, and rapid reaction kinetics of the interaction between Ru and O.

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“…Direct growth of active materials on the conductive substrates to the final practical self-supported electrode can avoid the use of expensive conductive binder, reduce the charge transfer resistance, and prevent the catalysts from aggregating and shedding during electrochemical oxygen evolution, resulting in high activity and stability especially under high current density. [63][64][65] Zheng and coworkers presented CeO 2 À Co 3 O 4 grown on Cu foam through electrochemical deposition Ce(OH) 3 on cobalt hydroxide carbonate nanoneedle arrays and calcination treatment. [66] Under the current density of 50 mA • cm À 2 , the overpotential was only 334 mV, also with excellent stability in 1 M KOH.…”

Section: Ceo 2 /Transition Metal Oxide Composite Catalysts For Oermentioning

confidence: 99%

Recent Advances of CeO₂‐Based Electrocatalysts for Oxygen and Hydrogen Evolution as well as Nitrogen Reduction

2021

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wards the oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and nitrogen reduction reaction (NRR) are summarized. This Review also highlights the key role of CeO 2 and the structural design strategies in the hybrid electrocatalysts, including ion doping, interface and defect engineering, electronic structure optimization, and morphology control for catalytic output enhancement. Lastly, some scientific challenges and perspectives have been proposed, aiming to promote the development of other CeO 2-based hybrids for energy related electrocatalysis.

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Ru-doped 3D flower-like bimetallic phosphide with a climbing effect on overall water splitting

Cited by 272 publications

References 47 publications

Hierarchically Assembling CoFe Prussian Blue Analogue Nanocubes on CoP Nanosheets as Highly Efficient Electrocatalysts for Overall Water Splitting

Hierarchically Assembling CoFe Prussian Blue Analogue Nanocubes on CoP Nanosheets as Highly Efficient Electrocatalysts for Overall Water Splitting

Bimetallic ZIF-Derived Co/N-Codoped Porous Carbon Supported Ruthenium Catalysts for Highly Efficient Hydrogen Evolution Reaction

Recent Advances of CeO₂‐Based Electrocatalysts for Oxygen and Hydrogen Evolution as well as Nitrogen Reduction

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Ru-doped 3D flower-like bimetallic phosphide with a climbing effect on overall water splitting

Cited by 272 publications

References 47 publications

Hierarchically Assembling CoFe Prussian Blue Analogue Nanocubes on CoP Nanosheets as Highly Efficient Electrocatalysts for Overall Water Splitting

Hierarchically Assembling CoFe Prussian Blue Analogue Nanocubes on CoP Nanosheets as Highly Efficient Electrocatalysts for Overall Water Splitting

Bimetallic ZIF-Derived Co/N-Codoped Porous Carbon Supported Ruthenium Catalysts for Highly Efficient Hydrogen Evolution Reaction

Recent Advances of CeO2‐Based Electrocatalysts for Oxygen and Hydrogen Evolution as well as Nitrogen Reduction

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Recent Advances of CeO₂‐Based Electrocatalysts for Oxygen and Hydrogen Evolution as well as Nitrogen Reduction