Lowering metal loadings onto Pt–Pd–Cu/graphene nanoribbon nanocomposites affects electrode collection efficiency and oxygen reduction reaction performance

Boone, Chirley V.

doi:10.1016/j.electacta.2019.02.079

Cited by 29 publications

(34 citation statements)

References 54 publications

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“…To give insight into the enhanced electrocatalytic property, mass activity (MA) and specific activity (SA) have been determined for these tested catalysts according to the method in ref. [25]. As observed in Figure 5c, the recorded MA and SA based on the mass of platinum group metals (PGM, PGM = Pt+Pd) for the supported catalyst are 0.39 A mg −1 PGM and 7.04 A cm −2 at 0.9 V (vs RHE), which are higher than those obtained by the other catalysts like Pt/C.…”

Section: Enhanced Electrocatalytic Activity Of Supported Ptpdcu Alloysmentioning

confidence: 71%

“…Each LSV curve was corrected by Ohmic drop resistance based on the result that Ohmic drop resistance measured in 0.1 m HClO 4 averaged 32 Ω. [ 25 ] b) The recorded onset potentials and half‐wave potentials of these samples. c) The mass activities normalized by platinum group metals (PGM, PGM = Pt+Pd) loading and the specific activities (normalization by ECSAs) at 0.9 V. d) The Tafel slopes.…”

Section: Resultsmentioning

confidence: 99%

“…Each LSV curve was corrected by Ohmic drop resistance based on the result that Ohmic drop resistance measured in 0.1 m HClO 4 averaged 32 Ω. [25] Computational Method: The first-principles calculations were performed on Materials Studio using the DMol3 code based on DFT. The core electrons were treated by the DFT semi-core pseudopotential (DSPP) method with the Perdew-Burke-Ernzerhof generalized gradient approximation (PBE-GGA) functional.…”

Section: Methodsmentioning

confidence: 99%

“…a) RDE measurements on the supported PtPdCu/C, unsupported PtPdCu, and commercial Pt/C in O 2 -saturated 0.1 m HClO 4 electrolyte with a sweep rate of 5 mV s −1 at 1600 rpm. Each LSV curve was corrected by Ohmic drop resistance based on the result that Ohmic drop resistance measured in 0.1 m HClO 4 averaged 32 Ω [25]. b) The recorded onset potentials and half-wave potentials of these samples.…”

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confidence: 99%

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Atomic‐Scale Interface Engineering: Boosting Oxygen Electroreduction over Supported Ternary Alloys Fabricated by Carbon‐Assisted Galvanic Replacement

Liu

et al. 2020

Adv Materials Inter

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For these above Pt-based alloys, there are reported results showing that the center of the d-band of the alloyed platinum is affected by the unsaturated d-orbital electrons of the alloyed transition metals, which contributes to the adsorption of oxygen-containing groups on the platinum surface, thereby boosting the ORR kinetics. [9] Based on the ORR mechanisms on the Pt alloys, Markovic and coworkers [10] proposed a well-known volcanic relationship between the center of the d-band of alloyed Pt atoms and the catalytic activities of Pt 3 M (M = Fe, Co, Ni, Cu, etc.). Among the Pt 3 M alloys, Pt 3 Co shows the best ORR activity and stability but has not yet meet the requirements for commercial application of proton exchange membrane fuel cell vehicle. [11] To resolve this issue, introducing a third alloy element into binary alloys of Pt is a route idea to further enhance the electrocatalytic performance for ORR. By this way, Duan and co-workers and Huang and co-workers [8,9] fabricated Pt 3 NiMo ternary alloy through solvothermal reduction with N,N-dimethylformamide as a sol

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Section: Enhanced Electrocatalytic Activity Of Supported Ptpdcu Alloysmentioning

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Atomic‐Scale Interface Engineering: Boosting Oxygen Electroreduction over Supported Ternary Alloys Fabricated by Carbon‐Assisted Galvanic Replacement

Liu

et al. 2020

Adv Materials Inter

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“…Graphitic carbon materials have long been used as electrode materials, with graphene-based materials being natural alternatives due largely to their generally high electrical conductivity, high specific surface areas, and strong chemical strength [22,23]. Therefore, graphene-supported Pt and metal alloy catalysts have been studied for the oxygen reduction process [24][25][26]. B-, N-, and S-doped graphene have also been investigated for ORR [27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Oxygen Reduction Reaction Catalyzed by Pt3M (M = 3d Transition Metals) Supported on O-doped Graphene

et al. 2020

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Pt3M (M = 3d transition metals) supported on oxygen-doped graphene as an electrocatalyst for oxygen reduction was investigated using the periodic density functional theory-based computational method. The results show that oxygen prefers to adsorb on supported Pt3M in a bridging di-oxygen configuration. Upon reduction, the O–O bond breaks spontaneously and the oxygen adatom next to the metal–graphene interface is hydrogenated, resulting in co-adsorbed O* and OH* species. Water formation was found to be the potential-limiting step on all catalysts. The activity for the oxygen reduction reaction was evaluated against the difference of the oxygen adsorption energy on the Pt site and the M site of Pt3M and the results indicate that the oxygen adsorption energy difference offers an improved prediction of the oxygen reduction activity on these catalysts. Based on the analysis, Pt3Ni supported on oxygen-doped graphene exhibits an enhanced catalytic performance for oxygen reduction over Pt4.

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Versatile Photoelectrocatalysis Strategy Raising Up the Green Production of Hydrogen Peroxide

Zhou

Tan

et al. 2023

Advanced Energy Materials

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H2O2 plays an irreplaceable role in many aspects of human society, such as paper bleaching, medical disinfection, wastewater treatment, organic synthesis, hydrometallurgy and the electronic industry. However, the unsustainability of the current industrial production process of traditional anthraquinone has a serious conflict with the green sustainable development. The photo/electrocatalytic H2O2 production from renewable energy has the advantages of being more economical, low‐carbon and green, and in line with the requirements of energy economy. These catalytic methods of green H2O2 production have played a demonstrative role in the development of many small molecules, contributing to a fundamental understanding of general catalysis and providing a scientific perspective for future new energy cycles. In this review, the authors aim to integrate the reaction process and mechanism of photocatalytic and electrocatalytic H2O2 production, summarize the development and application of photocatalytic and electrocatalytic H2O2 production in recent years, and assess the modern technologies promoted in the process of H2O2 production research, including the development of flux production equipment and reaction coproduction, etc. This review intends to provide a clear logic profile and new directions for the development of H2O2 production, and calls for more researchers to provide more insights into the development of this field.

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Lowering metal loadings onto Pt–Pd–Cu/graphene nanoribbon nanocomposites affects electrode collection efficiency and oxygen reduction reaction performance

Cited by 29 publications

References 54 publications

Atomic‐Scale Interface Engineering: Boosting Oxygen Electroreduction over Supported Ternary Alloys Fabricated by Carbon‐Assisted Galvanic Replacement

Atomic‐Scale Interface Engineering: Boosting Oxygen Electroreduction over Supported Ternary Alloys Fabricated by Carbon‐Assisted Galvanic Replacement

Oxygen Reduction Reaction Catalyzed by Pt3M (M = 3d Transition Metals) Supported on O-doped Graphene

Versatile Photoelectrocatalysis Strategy Raising Up the Green Production of Hydrogen Peroxide

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