Surface unsaturated WOx activating PtNi alloy nanowires for oxygen reduction reaction

Mo, Yanshan; Feng, Shouquan; Yu, Tianqi; Chen, Jinli; Qian, Guangfu; Luo, Lin; Yin, Shibin

doi:10.1016/j.jcis.2021.10.010

Cited by 27 publications

(24 citation statements)

References 53 publications

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“…Moreover, the thin nano-ribbons (< 200 nm) facilitate the insertion and extraction of ions, in addition to the quasi 1D structure of the nanoribbons, both of which help accelerate the kinetic transport of electrons, and its large specific surface area also can expand the effective area for redox reactions. [83] Similarly, Wang et al [84] synthesized Pd NBs using a hydrothermal method, and the HRTEM images showed that they had a d-spacing of 2.3 Å, which confirmed the stacking faults on the Pd nanoribbons were pointing to grow parallel to the substrate (111) plane. Thanks to the 1D band structure, the ECSA can be as high as 121 m 2 /g, and the final measured SA and MA were 1.01 mA/cm 2 and 1.21 A/mg (0.9 V @ RHE), respectively.…”

Section: Nanobeltsmentioning

confidence: 92%

“…And the DFT calculation and experimental analysis all showed that this combination was characterized by sub-5 nm Pd and FeN 3 single atoms which can provide a dual active site. A strong interaction between FeN 3 -containing graphene (FeN 3 C) and Pd (111) was also shown, leading to local structural deformation of the surface Pd layer, and this deformation optimized the geometry (Figure 6e) and improved the ORR catalytic activity. The highresolution XPS also showed that the binding energy of Pb embedded in the nanobelts showed an upshift of 0.3 eV when compared to bulk Pb, suggesting that the coupling effect of single-atom Fe sites can tune the local electronic structure of Pd.…”

Section: Nanobeltsmentioning

confidence: 99%

“…Among the core-shell structures, nanostructures with a noble-free metal core and an ultra-thin shell of Pt are considered as promising catalysts for ORR. A seed-mediated core/shell Co 2 P/Pt NRs approach was developed by Liu et al, [24] in which the Co 2 P(001)/Pt (111) interface with high catalytic effect was selectively expressed laterally. At the same time, the Co 2 P(010)/Pt (111) interface with poor catalytic effect was minimized (Figure 9k).…”

Section: Nanorodsmentioning

confidence: 99%

“…A seed-mediated core/shell Co 2 P/Pt NRs approach was developed by Liu et al, [24] in which the Co 2 P(001)/Pt (111) interface with high catalytic effect was selectively expressed laterally. At the same time, the Co 2 P(010)/Pt (111) interface with poor catalytic effect was minimized (Figure 9k). The final measured the SA of Co 2 P/Pt NRs (2.3 mA/cm 2 ) was greater than that of Pt NRs (0.31 mA/cm 2 ).…”

Section: Nanorodsmentioning

confidence: 99%

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A Review of One‐Dimensional Nanomaterials as Electrode Materials for Oxygen Reduction Reaction Electrocatalysis

et al. 2022

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In fuel cells, the generally low oxygen reduction reactions (ORR) rate at the cathode is a major factor limiting the overall performance of fuel cell, so the development of high‐performance, stable and inexpensive ORR electrocatalysts is a major researching direction. Nano‐electrocatalysts, especially one‐dimensional (1D) electrocatalysts, exhibit good catalytic behavior in fuel cell reactions due to their unique anisotropic structure, large specific surface area, high elasticity and excellent stability. To date, many advanced 1D electrocatalysts have been reported for optimizing the cathode ORR of fuel cells. Therefore, a comprehensive review of the structural design of 1D nano‐electrocatalysts and a systematic analysis of their enhanced performance still need further summarized and concluded. In this review, we firstly introduce the main synthetic methods of 1D electrocatalysts, and then discuss the recent advances and advantages of different structured 1D electrocatalysts involving nanofibers, nanotubes, nanorods, nanochains, nanowires, nanobelts, nanoneedles, nanowhiskers, and coaxial nanocables. In addition, we also introduce 1D electrocatalysts while highlighting advanced strategies and preparation methods for these different structured 1D electrocatalysts to improve ORR performance. Finally, we prospect the future development of 1D ORR electrocatalysts.

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Section: Nanobeltsmentioning

confidence: 92%

Section: Nanobeltsmentioning

confidence: 99%

Section: Nanorodsmentioning

confidence: 99%

Section: Nanorodsmentioning

confidence: 99%

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A Review of One‐Dimensional Nanomaterials as Electrode Materials for Oxygen Reduction Reaction Electrocatalysis

et al. 2022

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“…It has been reported that the addition of other metals (M) onto Pt as Pt-M nanoparticles catalysts has been shown to boost ORR activity. Nickel (Ni) is one of these metals that is commonly employed because it is affordable, easy to get, and has good electrochemical properties 13 , 14 , 16 – 25 . Using density functional theory (DFT) calculations and surface-sensitive examination, Stamenkovic et al 26 theoretically reported that the Pt 3 Ni in single crystal surface with (111) facet has an excellently high ORR catalytic activities, which is 10 times higher than Pt (111) surface and 90 times higher than Pt/C commercial catalyst.…”

Section: Introductionmentioning

confidence: 99%

The effect of supporting carbons on the gas phase synthesis of octahedral Pt3Ni electrocatalysts with various H2:CO ratios

Payattikul

Intakhuen

Kiatsiriroat

et al. 2022

Sci Rep

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The gas phase synthesis of octahedral Pt3Ni/C electrocatalysts using several carbon substrates (Ketjen black, Graphene, and Vulcan XC-72R) was investigated. Different carbon substrates altered the morphology and alloy of Pt3Ni nanoparticles, with octahedral morphology and alloy metal preferentially developing on Ketjen black and Graphene, while spherical shape and bimetallic metal preferentially developing on Vulcan. Furthermore, the shape was shown to be regulated throughout the reduction process, with the H2:CO ratio playing a crucial role in controlling octahedral morphology and carrying out the ORR activity. At a 1:3 H2:CO ratio, the Pt3Ni/Ketjen black exhibited the highest ORR activity for both mass activity (1.02 A mgPt−1) and specific activity (5.09 mA cm−2) that were 16.5 and 66.1 times larger than commercial Pt/C catalysts, respectively (0.062 A mgPt−1 and 0.077 mA cm−2). The best ORR activity of Pt3Ni onto Graphene and Vulcan XC-72R was exhibited with a 1:1 H2:CO mixture. The catalysts were tested using a 4000-voltage-cycle accelerated durability test, and the Pt3Ni/Ketjen catalyst fared the best in terms of ORR stability and durability.

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Superior Catalytic Performance and Methanol Tolerance of Co@Mesoporous Graphene Nanocomposites toward Oxygen Reduction Reaction

Yuan,

Chen,

Fan

et al. 2024

ChemistrySelect

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The global energy crisis and growing concerns about environmental pollution have spurred researchers to explore eco‐friendly methods of generating clean energy. Previous studies have often relied on noble metal catalysts to facilitate oxygen reduction reactions (ORR) in energy production reactions. However, their high cost has limited their widespread adoption, making the development of highly active and affordable ORR catalysts a significant challenge. In this study, a vacuum heat treatment technique was employed to fabricate a cobalt‐loaded mesoporous graphene (Co−Gs) nanocomposite. The inclusion of cobalt in graphene enhances the reaction, while the presence of mesoporous graphene provides a larger surface area to accommodate the active sites of Co. This synergistic effect promotes the improvement of catalytic performance. Additionally, the stability and methanol tolerance of Co−Gs nanocomposites is also superior than that of Pt−C. The excellent catalytic performance of the Co−Gs nanocomposite is attributed to a four‐electron pathway within the nanocomposite, as demonstrated by electrocatalytic kinetics investigations. Additionally, the interface interaction between the Co nanoparticles and Gs enhances the efficiency of electron transfer, effectively improving the catalytic performance. These findings highlight the potential of Co‐loaded graphene nanocomposites as highly efficient and cost‐effective electrocatalysts for clean energy application.

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Surface unsaturated WOx activating PtNi alloy nanowires for oxygen reduction reaction

Cited by 27 publications

References 53 publications

A Review of One‐Dimensional Nanomaterials as Electrode Materials for Oxygen Reduction Reaction Electrocatalysis

A Review of One‐Dimensional Nanomaterials as Electrode Materials for Oxygen Reduction Reaction Electrocatalysis

The effect of supporting carbons on the gas phase synthesis of octahedral Pt3Ni electrocatalysts with various H2:CO ratios

Superior Catalytic Performance and Methanol Tolerance of Co@Mesoporous Graphene Nanocomposites toward Oxygen Reduction Reaction

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