Synthesis of H2O2–CTAB dual-modified carbon black-supported Pt3Ni to improve catalytic activity for ORR

Li, Yinlei; Wang, Fanghui; Zhu, Hong

doi:10.1007/s10853-020-04808-y

Cited by 9 publications

(6 citation statements)

References 45 publications

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“…In addition, pairing Pt with activated carbon black offers high electrocatalytic activities during fuel cell operations. [78][79][80] Other carbon-based supports used in fuel cell applications are graphene 81,82 and modified graphene, such as graphene oxide, 83 reduced graphene oxide, 84,85 heteroatom-doped graphene 86 and many more. [87][88][89][90][91] These carbon-based materials have the advantages of a large specific surface area, high electrical conductivity and low mass density in addition to their affordable price.…”

Section: Carbon-based Catalyst Supportsmentioning

confidence: 99%

A comprehensive review of MXenes as catalyst supports for the oxygen reduction reaction in fuel cells

et al. 2021

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The oxygen reduction reaction (ORR) that occurs in the cathode of fuel cells is a major issue in proton exchange membrane fuel cells (PEMFCs) due to their sluggish kinetics. Exploring suitable materials for use as cathode catalysts can be challenging because the materials should be chemically active yet must be stable in an extremely corrosive environment in fuel cells. Since the successful introduction of graphene, 2-dimensional (2D) materials have received extensive research interest regarding their use as support materials for cathode catalysts due to their large surface area for catalyst dispersion. Recently, research on 2D MXene-based catalyst supports has started to increase. Excellent electronic properties, electrical conductivity, hydrophilicity and chemical and thermal stability are the key properties of potential MXenes used as catalyst supports. Therefore, in this review, the properties and performance of 2D MXene-based catalyst supports in the ORR are comprehensively discussed. This finding provides the groundwork for the exploration of MXenes in electrocatalysis, especially in the ORR. Challenges and future research directions are also discussed in this review.

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Section: Carbon-based Catalyst Supportsmentioning

confidence: 99%

A comprehensive review of MXenes as catalyst supports for the oxygen reduction reaction in fuel cells

et al. 2021

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“…The Pt 4f XPS spectra of a commercial Pt/C catalyst is also shown as the benchmark. There are two Pt 4f peaks, Pt 4f 5/2 and Pt 4f 7/2 , located on 71.84 and 75.14 eV [44,45], shown on the Pt 4f XPS spectrum of the commercial Pt/C while the Pt 4f 5/2 and Pt 4f 7/2 peaks of the Pt/Ti 4 O 7 catalysts all shift negatively to a lower BE. This suggests that there should be more electrons surrounding the Pt atoms in Pt/Ti 4 O 7 catalysts compared to Pt/C.…”

Section: Electrocatalytic Performances Of Pt/ti4o7 Samplesmentioning

confidence: 97%

“…The Pt 4 XPS spectra of a commercial Pt/C catalyst is also shown as the benchmark. There are tw Pt 4f peaks, Pt 4f5/2 and Pt 4f7/2, located on 71.84 and 75.14 eV [44,45], shown on the Pt 4 XPS spectrum of the commercial Pt/C while the Pt 4f5/2 and Pt 4f7/2 peaks of the Pt/Ti4O Measurements were obtained by X-ray photoelectron spectroscopy (XPS) to analyze the surface electron structures of the catalysts. Figure 7a,b shows the high-resolution Ti 2p and Pt 4f XPS spectra of the Pt/Ti 4 O 7 catalysts.…”

Section: Electrocatalytic Performances Of Pt/ti4o7 Samplesmentioning

confidence: 99%

Study of the Relationship between Metal–Support Interactions and the Electrocatalytic Performance of Pt/Ti4O7 with Different Loadings

2022

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The application potential of Pt/Ti4O7 has been reported, but the lack of research on the relationship between Pt loading, MSI, and catalytic activity hinders further development. Micron-sized Ti4O7 powders synthesized by a thermal reduction method under an H2 atmosphere were used as a support material for Pt-based catalysts. Using a modified polyol method, Pt/Ti4O7-5, Pt/Ti4O7-10, and Pt/Ti4O7-20 with different mass ratios (Pt to Pt/Ti4O7 is 0.05, 0.1, 0.2) were successfully synthesized. Uniformly dispersed platinum nanoparticles exhibit disparate morphologies, rod-like for Pt/Ti4O7-5 and approximately spherical for Pt/Ti4O7-10 and Pt/Ti4O7-20. Small-angle deflections and lattice reconstruction induced by strong metal–support interactions were observed in Pt/Ti4O7-5, which indicated the formation of a new phase at the interface. However, lattice distortions and dislocations for higher loading samples imply the existence of weak metal–support interactions. A possible mechanism is proposed to explain the different morphologies and varying metal–support interactions (MSI). With X-ray photoelectron spectroscopy, spectrums of Pt and Ti display apparent shifts in binding energy compared with commercial Pt-C and non-platinized Ti4O7, which can properly explain the changes in absorption ability and oxygen reduction reaction activity, as described in the electrochemical results. The synthetic method, Pt loading, and surface coverage of the support play an important role in the adjustment of MSI, which gives significant guidance for better utilizing MSI to prepare the target catalyst.

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“…Many efforts have been devoted to designing Pt-based catalyst to achieve high electrocatalytic activity and optimized utilization [6]. Adding non-noble metals, such as Fe, Co, and Ni, to Pt is a promising way, which not only reduces the utilization of Pt, but also increases the ORR activity through lowering the binding energy of oxygen species [7][8][9][10][11]. Specially, PtCo bimetallic catalysts attract much attention due to the relatively high activity and stability towards ORR kinetics [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Highly active PtCo nanoparticles on hierarchically ordered mesoporous carbon support for polymer electrolyte membrane fuel cells

et al. 2021

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In this work, PtCo nanoparticles (NPs) on hierarchically ordered mesoporous carbon (PtCo/OMC) are synthesized for polymer electrolyte membrane fuel cells (PEMFCs) aiming to improve the activity and durability of the Pt-based catalyst towards oxygen reduction reaction (ORR). Specifically, the OMC is prepared through a solvent evaporation-induced self-assembly (EISA) method by using a triblock copolymer PEO-PPO-PEO as the structure agent, followed by annealing in the nitrogen atmosphere to decompose the structure agent and to carbonize the carbon precursor. PtCo nanoparticles (NPs) are fabricated with an average diameter of 3.3 nm by H 2 reduction and galvanic replacement in an acid solution, and then are uniformly dispersed onto the OMC via impregnation. The typical mesoporous structure of the OMC enhances the uniformly distribution and thermal stability of the small-sized PtCo NPs. The activity and the durability of the as-prepared PtCo/OMC catalyst are investigated by cyclic voltammetry (CV) and single-cell test. In the electrochemical tests, PtCo/OMC exhibits a high ECSA value of 88.56 m 2 g -1 , and a ECSA retention of 77.5% after 5000 CV cycles. The results show that the PtCo/OMC catalyst is more active and more stable than the commercial-carbon-supported PtCo catalyst (PtCo/XC-72).

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Synthesis of H2O2–CTAB dual-modified carbon black-supported Pt3Ni to improve catalytic activity for ORR

Cited by 9 publications

References 45 publications

A comprehensive review of MXenes as catalyst supports for the oxygen reduction reaction in fuel cells

A comprehensive review of MXenes as catalyst supports for the oxygen reduction reaction in fuel cells

Study of the Relationship between Metal–Support Interactions and the Electrocatalytic Performance of Pt/Ti4O7 with Different Loadings

Highly active PtCo nanoparticles on hierarchically ordered mesoporous carbon support for polymer electrolyte membrane fuel cells

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