Manifolding surface sites of compositional CoPd alloys via pulsed laser for hydrazine oxidation-assisted energy-saving electrolyzer: Activity origin and mechanism discovery

Jeong, Yujeong; Naik, Shreyanka Shankar; Theerthagiri, Jayaraman; Moon, Cheol Joo; Min, Ahreum; Kumari, M.L. Aruna; Choi, Myong Yong

doi:10.1016/j.cej.2023.144034

Cited by 31 publications

(1 citation statement)

References 63 publications

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“…The PLIL technique offers several advantages over other conventional synthesis methods, notably rapidity and high purity. Furthermore, this procedure obviates the need for external reducing agents or capping/surfactant reagents, thereby enhancing the concentration of reactive species on the catalyst surface. − Based on in situ spectral analyses, we interpret the exfoliation process (via the acoustic levitator-proceding PLIL process) and the exceptionally high HER and overall water splitting (OWS) kinetics of the RuBP electrocatalysts as a result of the robust electronic coupling between Ru-nanoclusters and exfoliated few-layer BP sheets.…”

Section: Introductionmentioning

confidence: 99%

Laser-Synthesized Ru-Anchored Few-Layer Black Phosphorus for Superior Hydrogen Evolution: Role of Acoustic Levitation

Park,

Theerthagiri,

Min

et al. 2024

ACS Appl. Mater. Interfaces

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Electrochemical water splitting, driven by processed catalysts, is the most reasonable method for hydrogen production. This study demonstrates an activation phenomenon with ruthenium (Ru) nanoclusters on few-layered black phosphorus (BP), greatly enhancing the electrocatalytic hydrogen evolution reaction (HER). Efficient BP exfoliation was achieved using acoustic levitators and pulsed laser irradiation in liquids (PLIL), yielding charge-transfer Ru-nanoclusters on modulated surfaces. Various PLIL parameters were examined for the optimal BP sheet size. After ruthenization, Ru's d-band center facilitated hydrogen adsorption via Ru−H bonding. Synergy between BP's charge-carrier properties and Ru's active sites boosted HER kinetics with an ultralow overpotential of 84 mV at 10 mA/cm 2 in KOH. Additionally, the RuO 2 || RuBP-2 electrolyzer demonstrated remarkable overall water splitting performance at ∼1.60 V at 10 mA/cm 2 . These results highlight the pivotal role of metal nanoclusters on exfoliated BP surfaces and offer a refined strategy for high-density electrocatalysts in energy conversion.

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Section: Introductionmentioning

confidence: 99%

Laser-Synthesized Ru-Anchored Few-Layer Black Phosphorus for Superior Hydrogen Evolution: Role of Acoustic Levitation

Park,

Theerthagiri,

Min

et al. 2024

ACS Appl. Mater. Interfaces

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Rational Design and Facile Preparation of Palladium‐Based Electrocatalysts for Small Molecules Oxidation

Wu,

Zhang,

Yang

2024

ChemSusChem

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Direct liquid fuel cells (DLFCs) can convert the chemical energy of small organic molecules directly into electrical energy, which is a promising technique and always calls for electrocatalysts with high activity, stability and selectivity. Palladium (Pd)‐based catalysts for DLFCs have been widely studied with the pursuit of ultra‐high performance, however, most of the preparation routes require complex agents, multi‐operation steps, even extreme experimental conditions, which are high‐cost, energy‐consuming, and not conducive to the scalable and sustainable production of catalysts. In this review, the recent progresses on not only the rational design strategies, but also the facile preparation methods of Pd‐based electrocatalysts for small molecules oxidation reaction (SMOR) are comprehensively summarized. Based on the principles of green chemistry in material synthesis, the basic rules of “facile method” have been restricted, and the fabrication processes, perks and drawbacks, as well as practical applications of the “real” facile methods have been highlighted. The landscape of this review is to facilitate the mild preparation of efficient Pd‐based electrocatalysts for SMOR, that is, to achieve a balance between “facile preparation” and “outstanding performance”, thereby to stimulate the huge potential of sustainable nano‐electrocatalysts in various research and industrial fields.

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Mono‐/Bimetallic Doped and Heterostructure Engineering for Electrochemical Energy Applications

Chu,

Liang,

Cheng

et al. 2024

ChemSusChem

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Designing efficient materials is crucial to meeting specific requirements in various electrochemical energy applications. Mono‐/bimetallic doped and heterostructure engineering have attracted considerable research interest due to their unique functionalities and potential for electrochemical energy conversion and storage. However, addressing material imperfections such as low conductivity and poor active sites requires a strategic approach to design. This review explores the latest advancements in materials modified by mono‐/bimetallic doped and heterojunction strategies for electrochemical energy applications. It can be subdivided into three key points: (i) the regulatory mechanisms of metal doping and heterostructure engineering for materials; (ii) the preparation methods of materials with various engineering strategies; and (iii) the synergistic effects of two engineering approaches, further highlighting their applications in supercapacitors, alkaline ion batteries, and electrocatalysis. Finally, the review concludes with perspectives and recommendations for further research to advance these technologies.

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Manifolding surface sites of compositional CoPd alloys via pulsed laser for hydrazine oxidation-assisted energy-saving electrolyzer: Activity origin and mechanism discovery

Cited by 31 publications

References 63 publications

Laser-Synthesized Ru-Anchored Few-Layer Black Phosphorus for Superior Hydrogen Evolution: Role of Acoustic Levitation

Laser-Synthesized Ru-Anchored Few-Layer Black Phosphorus for Superior Hydrogen Evolution: Role of Acoustic Levitation

Rational Design and Facile Preparation of Palladium‐Based Electrocatalysts for Small Molecules Oxidation

Mono‐/Bimetallic Doped and Heterostructure Engineering for Electrochemical Energy Applications

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