Combining the core-shell construction with an alloying effect for high efficiency ethanol electrooxidation

Liu, Danye; Zeng, Qing; Liu, Hui; Hu, Chaoquan; Chen, Dong; Xu, Lin; Yang, Jun

doi:10.1016/j.xcrp.2021.100357

Cited by 38 publications

(37 citation statements)

References 61 publications

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“…The TEM image in Figure 1B and the corresponding histogram in Figure S2B demonstrate that these core-shell Au@Ni nanoparticles are quasi-spherical with an average size of 8.78 nm. As clearly observed in high-resolution aberration-corrected high-angle annular dark-field scanning TEM (HAADF-STEM) images in Figures 1C and S3A, the brightness contrast between the central and the extremely thin edge region of the particles indicates their typical core-shell feature with the ultrathin shell (Liu et al, 2021;Kim et al, 2017). The element mapping analyses of two arbitrarily selected particles shown in Figure 1D 1 also indisputably confirms their core-shell construction (Figures 1D 2 ÀD 4 ).…”

Section: Resultssupporting

confidence: 58%

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Electronic and lattice strain dual tailoring for boosting Pd electrocatalysis in oxygen reduction reaction

Zeng

Liu

et al. 2021

iScience

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Section: Resultssupporting

confidence: 58%

“…the adsorption of oxygenated intermediates on the same (Chen et al, 2016;Deming et al, 2015;Laskar and Skrabalak, 2016;Liu et al, 2021). Therefore, for completely making use of the advantages of thin Pd shell for ORR electrocatalysis, the disadvantaged lattice expansion should be averted for favorable adsorption of ORR intermediates.…”

Section: Ll Open Accessmentioning

confidence: 99%

Electronic and lattice strain dual tailoring for boosting Pd electrocatalysis in oxygen reduction reaction

Zeng

Liu

et al. 2021

iScience

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“…As have been well documented, a major deficiency for Pt‐based nanomaterials used as catalysts for methanol electro‐oxidation is they are susceptible to poisoning by CO‐like intermediates 45,47 . In this sense, the decrease in electron density around Pt atoms that means their higher binding energies could weaken the adsorption of poisoning CO‐like intermediates generated from methanol electro‐oxidation on the Pt catalyst surfaces as the decreased electron density is not capable enough to back‐donate the antibonding orbitals of CO, thus improving their intrinsic electrocatalytic properties 48 …”

Section: Resultsmentioning

confidence: 99%

Heterogeneous nanocomposites consisting of Pt₃Co alloy particles and CoP₂ nanorods towards high‐efficiency methanol electro‐oxidation

et al. 2021

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Heterogeneous nanocomposites comprising chemically distinct constituents are particularly promising in electrocatalysis. We herein report a synthetic strategy that combines the reduction of Pt and Co ionic precursors at an appropriate ratio with the subsequent phosphating at an elevated temperature for forming heterogeneous nanocomposites consisting of quasi‐spherical Pt3Co alloy domains and rod‐like CoP2 domains for high‐efficiency methanol electro‐oxidation. The strong electronic coupling between Pt3Co and CoP2 domains in the nanocomposites render the electron density around Pt atoms to decrease, which is favorable for reducing the adsorption of poisoning CO‐like intermediates on the catalyst surfaces. Accordingly, the as‐prepared heterogeneous Pt3Co–CoP2 nanocomposites show good performance for methanol electro‐oxidation both in acidic and alkaline media. In specific, at a Pt loading of only 6.4% on a common carbon substrate, the mass‐based activity of Pt3Co–CoP2 nanocomposites in an acidic medium is about 2 and 1.5 times as high as that of commercial Pt/C catalyst (20% mass loading) and home‐made Pt3Co alloy nanoparticles (8.0% mass loading), while in the alkaline medium, these values are 3 and 2, respectively.

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“…Then, Pd(acac) 2 is added to obtain Au@NiPd NPs through a further reduction reaction. In addition, a strategy for the synthesis of core–shell materials using the co-reduction method was designed [ 68 ]. Pd(acac) 2 , HAuC1 4 ·4H 2 O and Fe(acac) 3 were used as metal precursors and heated in oleamine containing oleic acid.…”

Section: Factors Affecting the Orr Performances Of The Core-shell Str...mentioning

confidence: 99%

Noble Metal-Based Catalysts with Core-Shell Structure for Oxygen Reduction Reaction: Progress and Prospective

Wang

Qin

et al. 2022

Nanomaterials

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With the deterioration of the ecological environment and the depletion of fossil energy, fuel cells, representing a new generation of clean energy, have received widespread attention. This review summarized recent progress in noble metal-based core–shell catalysts for oxygen reduction reactions (ORRs) in proton exchange membrane fuel cells (PEMFCs). The novel testing methods, performance evaluation parameters and research methods of ORR were briefly introduced. The effects of the preparation method, temperature, kinds of doping elements and the number of shell layers on the ORR performances of noble metal-based core–shell catalysts were highlighted. The difficulties of mass production and the high cost of noble metal-based core–shell nanostructured ORR catalysts were also summarized. Thus, in order to promote the commercialization of noble metal-based core–shell catalysts, research directions and prospects on the further development of high performance ORR catalysts with simple synthesis and low cost are presented.

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Combining the core-shell construction with an alloying effect for high efficiency ethanol electrooxidation

Cited by 38 publications

References 61 publications

Electronic and lattice strain dual tailoring for boosting Pd electrocatalysis in oxygen reduction reaction

Electronic and lattice strain dual tailoring for boosting Pd electrocatalysis in oxygen reduction reaction

Heterogeneous nanocomposites consisting of Pt₃Co alloy particles and CoP₂ nanorods towards high‐efficiency methanol electro‐oxidation

Noble Metal-Based Catalysts with Core-Shell Structure for Oxygen Reduction Reaction: Progress and Prospective

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Combining the core-shell construction with an alloying effect for high efficiency ethanol electrooxidation

Cited by 38 publications

References 61 publications

Electronic and lattice strain dual tailoring for boosting Pd electrocatalysis in oxygen reduction reaction

Electronic and lattice strain dual tailoring for boosting Pd electrocatalysis in oxygen reduction reaction

Heterogeneous nanocomposites consisting of Pt3Co alloy particles and CoP2 nanorods towards high‐efficiency methanol electro‐oxidation

Noble Metal-Based Catalysts with Core-Shell Structure for Oxygen Reduction Reaction: Progress and Prospective

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Heterogeneous nanocomposites consisting of Pt₃Co alloy particles and CoP₂ nanorods towards high‐efficiency methanol electro‐oxidation