Elucidating Pt-Based Nanocomposite Catalysts for the Oxygen Reduction Reaction in Rotating Disk Electrode and Gas Diffusion Electrode Measurements

Du, Jia; Quinson, Jonathan; Zana, Alessandro; Arenz, Matthias

doi:10.1021/acscatal.1c01496

Cited by 20 publications

(17 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pt NPs benchmark the performance for fuel cells, , while a calendar degradation analysis indicates a substantial loss of surface area and a particle coarsening upon potential cycling , In addition to oxygen electrochemistry, there has been increasing interest in the electrocatalytic generation of hydrocarbons and ammonia as fuels in electrolyzers. ,, Elucidating and tailoring the surface transformation toward a structurally disordered and electrochemically active interphase in these electrochemical devices remain pivotal to enrich our understanding of the electrochemical redox chemistry between the catalyst and electrolyte. , …”

Section: Lattice Oxygen Evolution Reaction and Surface Amorphization ...mentioning

confidence: 99%

Reaction-Mediated Transformation of Working Catalysts

et al. 2022

View full text Add to dashboard Cite

Catalytic transformations are critical in a variety of thermal and electrochemical processes, including fuel and chemical generation, energy conversion, and decarbonization. Historically, various static assessment factors have been used to examine a wide range of catalytic materials. Surface, interfacial, and nanoscale phenomena have been seen in various catalytic disciplines, which are crucial to major applications. These phenomena sparked extensive discussions on how catalysts operate for reactions and adapt to working environments. With this recognition, the goal of this review is to go beyond the traditional static analysis of working catalysts and provide a perspective on the dynamic insights into structural and redox transformations at catalytic surfaces and electrified interfaces. The correlation between the transformation of working catalysts and their catalytic performance is examined, shedding light on understanding and controlling catalyst redox and structure evolution under operating conditions with properties tailored to thermochemical and electrocatalytic processes.

show abstract

Section: Lattice Oxygen Evolution Reaction and Surface Amorphization ...mentioning

confidence: 99%

Reaction-Mediated Transformation of Working Catalysts

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The principle is to keep the gas and electrolyte in equilibrium in the micropores at atmospheric pressure. Then, the potential is controlled to cause an electrochemical reaction while a stable gas–liquid–solid three-phase interface is formed [ 58 ]. At present, GDE testing can check the relevant catalyst layer structure, current and potential range similarly to MEA testing technology.…”

Section: Orr Testing Technologymentioning

confidence: 99%

Noble Metal-Based Catalysts with Core-Shell Structure for Oxygen Reduction Reaction: Progress and Prospective

Wang

Qin

et al. 2022

Nanomaterials

View full text Add to dashboard Cite

With the deterioration of the ecological environment and the depletion of fossil energy, fuel cells, representing a new generation of clean energy, have received widespread attention. This review summarized recent progress in noble metal-based core–shell catalysts for oxygen reduction reactions (ORRs) in proton exchange membrane fuel cells (PEMFCs). The novel testing methods, performance evaluation parameters and research methods of ORR were briefly introduced. The effects of the preparation method, temperature, kinds of doping elements and the number of shell layers on the ORR performances of noble metal-based core–shell catalysts were highlighted. The difficulties of mass production and the high cost of noble metal-based core–shell nanostructured ORR catalysts were also summarized. Thus, in order to promote the commercialization of noble metal-based core–shell catalysts, research directions and prospects on the further development of high performance ORR catalysts with simple synthesis and low cost are presented.

show abstract

“…It was also shown using oleylamine-protected Au NPs and surfactant-free Pt that a similar effect of improved activity and stability for the ORR was possible when the surfactants can be removed by a mild treatment. 305 Pt-Au alloy nanoparticles can also be formed in situ from co-deposited Pt and Au NPs, towards improved catalysts for formic aid oxidation. 306 This allows including NPs into nanocomposites where a colloidal surfactant-free synthesis is not yet established.…”

Section: Iii3 Loading and Interparticle Distance Effectsmentioning

confidence: 99%

Surfactant-free colloidal syntheses of precious metal nanoparticles for improved catalysts

Quinson

Kunz²,

Arenz

2022

Preprint

Self Cite

View full text Add to dashboard Cite

Colloidal syntheses of nanomaterials offer multiple benefits to study, understand and optimize un-supported and supported catalysts. In particular, colloidal syntheses are relevant to synthetize (precious) metal nanoparticles. By separating the synthesis of the active phase nanoparticles from supporting steps, a deeper knowledge and a rational control on supported catalyst properties is gained. The effect of nanoparticle size, shape, composition, nature of support or metal loading on a support can be studied in more systematic ways. The fundamental knowledge gained paves the way for catalyst optimization by tuning the catalyst activity, selectivity, and stability. However, a major drawback is that most colloidal syntheses require the use of additives or surfactants, which are detrimental to most catalytic reactions since they typically block catalyst active sites. Surfactant removal typically adds complexity, can introduce a lack of reproducibility, is energy consuming, generates waste, and prevents the full exploitation of the many benefits of colloidal syntheses for catalysis. Several surfactant-free strategies to obtain stable colloidal nanoparticles are here reviewed. A focus is given to laser synthesis and processing of colloids (LSPC), solution plasma process (SPP), N,N-dimethylformamide (DMF), polyols, and recently reported mono-alcohols based syntheses. The relevance of these synthetic approaches for catalysis is detailed with a focus on heterogeneous catalysis and electro-catalysis.

show abstract

Elucidating Pt-Based Nanocomposite Catalysts for the Oxygen Reduction Reaction in Rotating Disk Electrode and Gas Diffusion Electrode Measurements

Cited by 20 publications

References 57 publications

Reaction-Mediated Transformation of Working Catalysts

Reaction-Mediated Transformation of Working Catalysts

Noble Metal-Based Catalysts with Core-Shell Structure for Oxygen Reduction Reaction: Progress and Prospective

Surfactant-free colloidal syntheses of precious metal nanoparticles for improved catalysts

Contact Info

Product

Resources

About