Screening and characterization of bimetallic Pt–M (M = Y, La, Ce, Pr, Nd, Gd) electrocatalysts for the oxygen reduction reaction

Weng, Yu–Ching; Wu, Che-Chi; Wang, Hsin-Jen; Wang, Yun-Ya

doi:10.1016/j.electacta.2020.136012

Cited by 4 publications

(4 citation statements)

References 49 publications

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“…Recently, Pt–lanthanide (Pt–L, L = La, Gd, Tb, Sm, etc.) alloys have shown remarkable activity for the fuel cell catalysts. − In fact, both theoretical and experimental analyses have revealed that Pt–L bimetallic compounds exhibit the highest electrocatalytic activity toward the ORR among all of the electrocatalysts reported to date. , In particular, the atomically ordered phase of Pt x L (i.e., intermetallic compounds) exhibits excellent electrocatalytic activity toward the ORR. Escudero–Escribano et al reported that Pt–L shows excellent activity toward the ORR through lanthanide contraction .…”

Section: Introductionmentioning

confidence: 99%

Atomically Ordered Pt₅La Nanoparticles as Electrocatalysts for the Oxygen Reduction Reaction

Gunji

Tanaka

Inagawa

et al. 2022

ACS Appl. Nano Mater.

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In this study, atomically ordered intermetallic Pt5La nanoparticles (NPs) were successfully prepared using a relatively simple wet chemical process. X-ray diffraction measurements were carried out to determine the crystal structures of the prepared catalysts. The transmission electron microscopy results revealed that the Pt5La NPs with a size of 3–15 nm were distributed on the carbon surface. The crystal structure of the Pt–La alloy depended on the annealing temperature. A face-centered cubic-type (i.e., a disordered phase) structure was formed at temperatures less than 700 °C, while a CaCu5-type structure (i.e., an ordered phase) could be formed at 800 °C. The prepared Pt5La NPs exhibited oxygen reduction reaction (ORR) specific (1.39 mA cm–2) and mass (0.657 A mg–1) activities approximately 3.7 and 5.1 times higher than those of commercially available Pt NPs on carbon, respectively. Furthermore, the as-prepared NPs showed enhanced ORR durability. The enhanced ORR activity was evaluated through surface analysis using high-angle annular dark-field scanning transmission electron microscopy and X-ray photoelectron spectroscopy. The significantly enhanced ORR activity of the ordered Pt5La NPs was due to their compressive strain and rich atomic steps. The findings of this study will be helpful in the development of electrocatalysts with high electrochemical activity.

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Section: Introductionmentioning

confidence: 99%

Atomically Ordered Pt₅La Nanoparticles as Electrocatalysts for the Oxygen Reduction Reaction

Gunji

Tanaka

Inagawa

et al. 2022

ACS Appl. Nano Mater.

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“…[29][30][31][32][33][34][35][36] To restrain OÀ O bond splitting and enhance H 2 O 2 selectivity, structural redesign or modification on 4e-ORR electrocatalyst is feasible. [37][38][39][40][41][42][43][44] NiCo 2 S 4 is a cheap and green 4e-ORR electrocatalyst. [45][46][47][48][49] Its strongly tendency towards 4e-ORR originates from the intensive interaction between Ni 2 + /Co 3 + and OOH*, which hinders it's desorption and prompts OÀ O bond breaking.…”

Section: Introductionmentioning

confidence: 99%

Structural Modulation on NiCo₂S₄Nanoarray by N Doping to Enhance 2e‐ORR Selectivity for Photothermal AOPs and Zn−O₂Batteries**

Yin

et al. 2021

Chemistry A European J

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As a H2O2 generator, a 2e− oxygen reduction reaction active electrocatalyst plays an important role in the advanced oxidation process to degrade organic pollutants in sewage. To enhance the tendency of NiCo2S4 towards the 2e− reduction reaction, N atoms are doped in its structure and replace S2−. The result implies that this weakens the interaction between NiCo2S4 and OOH*, suppresses O−O bond breaking and enhances H2O2 selectivity. This electrocatalyst also shows photothermal effect. Under photothermal heating, H2O2 produced by the oxidation reduction reaction can decompose and releaseOH, which degrades organic pollutants through the advanced oxidation process. Photothermal effect induced by the advance oxidation process shows obvious advantages over the traditional Fenton reaction, such as wide pH adaptation scope and low secondary pollutant due to its Fe2+ free character. With Zn as anode and the electrocatalyst as cathode material, a Zn−O2 battery is assembled. It achieves electricity generation and photothermal effect induced by the advance oxidation process simultaneously.

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“…89 However, LOBs face such challenges as oxygen diffusion, formations of insulating reaction products, and the O 2 cathode instability, hindering their practical implementations. 90,91 NIGs are one of the efficient strategies to address these challenges and improve the LOB performances. NIGs designed with high ionic conductivity could facilitate the diffusion of both Li + and the oxygen through the electrolytes.…”

Section: The Applications Of Nigs In Rechargeable Lithium-based Batte...mentioning

confidence: 99%

“…Compared with traditional LIBs, LOBs possess much higher theoretical energy density (~3500 Wh kg −1 ), owning to the theoretical merit of utilizing oxygen as one of the active reactants from the atmosphere air 89 . However, LOBs face such challenges as oxygen diffusion, formations of insulating reaction products, and the O 2 cathode instability, hindering their practical implementations 90,91 . NIGs are one of the efficient strategies to address these challenges and improve the LOB performances.…”

Section: The Applications Of Nigs In Rechargeable Lithium‐based Batte...mentioning

confidence: 99%

Recent developments of nanocomposite ionogels as monolithic electrolyte membranes for lithium‐based batteries

Xie,

Chen,

Zhang

et al. 2023

Battery Energy

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To utilize intermittent renewable energy to achieve carbon neutrality, rechargeable lithium‐based batteries have been deemed to be the most promising electrochemical systems for energy supply and storage. However, there still exist safety issues and challenges, especially originating from the intrinsic volatility and flammability of the electrolytes used in lithium‐based batteries. Due to the unique advantages of better safety, (quasi) solid‐state electrolytes have been exploited. Ionogel (IG), known as ionic liquid (IL) based monolithic quasi‐solid‐state electrolyte separator, consists of IL and gelling matrix and has become an active area of research in lithium‐based battery technology, owing to fascinating exotic characteristics including high safety (thermal stability) under extreme operating conditions, wide processing compatibility, and decent electrochemical performances. Among various gelling matrices, nanomaterials are very promising to simultaneously enhance ionic conductivity, mechanical strength, and thermal and electrochemical properties of IGs, which make the nanocomposite ionogels (NIGs). Herein, several significant advantages of NIGs as monolithic electrolyte membranes are briefly described. Also, recent advances in the NIGs for Li‐ion batteries, Li‐metal batteries, Li‐S batteries, and Li‐O2 batteries are timely and systematically overviewed. Finally, the remaining challenges and perspectives on such an interesting and active field are discussed. To the best of our knowledge, there are rare review articles focusing on the NIGs for Li‐based batteries till now. This work could offer a comprehensive understanding of recent advances and challenges of NIGs for advanced lithium storage.

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Screening and characterization of bimetallic Pt–M (M = Y, La, Ce, Pr, Nd, Gd) electrocatalysts for the oxygen reduction reaction

Cited by 4 publications

References 49 publications

Atomically Ordered Pt₅La Nanoparticles as Electrocatalysts for the Oxygen Reduction Reaction

Atomically Ordered Pt₅La Nanoparticles as Electrocatalysts for the Oxygen Reduction Reaction

Structural Modulation on NiCo₂S₄Nanoarray by N Doping to Enhance 2e‐ORR Selectivity for Photothermal AOPs and Zn−O₂Batteries**

Recent developments of nanocomposite ionogels as monolithic electrolyte membranes for lithium‐based batteries

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Screening and characterization of bimetallic Pt–M (M = Y, La, Ce, Pr, Nd, Gd) electrocatalysts for the oxygen reduction reaction

Cited by 4 publications

References 49 publications

Atomically Ordered Pt5La Nanoparticles as Electrocatalysts for the Oxygen Reduction Reaction

Atomically Ordered Pt5La Nanoparticles as Electrocatalysts for the Oxygen Reduction Reaction

Structural Modulation on NiCo2S4Nanoarray by N Doping to Enhance 2e‐ORR Selectivity for Photothermal AOPs and Zn−O2Batteries**

Recent developments of nanocomposite ionogels as monolithic electrolyte membranes for lithium‐based batteries

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Atomically Ordered Pt₅La Nanoparticles as Electrocatalysts for the Oxygen Reduction Reaction

Atomically Ordered Pt₅La Nanoparticles as Electrocatalysts for the Oxygen Reduction Reaction

Structural Modulation on NiCo₂S₄Nanoarray by N Doping to Enhance 2e‐ORR Selectivity for Photothermal AOPs and Zn−O₂Batteries**