Multimetallic Catalysts and Electrocatalysts: Dynamic Core–Shell Nanostructures

Wu, Zhipeng; Shan, Shiyao; Wang, Shan; Caracciolo, Dominic; Lu, Aolin; Kong, Zhi Hui; Robinson, Richard; Shang, Guojun; Zhong, Chuan‐Jian

doi:10.1007/978-981-16-0463-8_5

Cited by 2 publications

(1 citation statement)

References 41 publications

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“…These observations indicate that nanoparticle-based ORR electrocatalysts are not structurally stagnant but dynamic at the atomic scale upon exposure to the applied electrochemical conditions. Core -shell-structured ORR electrocatalysts have also been extensively investigated in recent decades, with typical examples including Pt-shelled nanomaterials and Pt-skinned nanocatalysts fabricated via methods such as underpotential deposition and chemical/electrochemical dealloying [21,[59][60][61][62] . It is generally believed that Pt-based catalysts with this type of nanostructure are stable in electrochemical environments.…”

Section: Orrmentioning

confidence: 99%

Applications of in situ electron microscopy in oxygen electrocatalysis

Wu¹,

Zhang²,

Chen³

et al. 2022

Microstructures

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Oxygen electrocatalysis involving the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) plays a vital role in cutting-edge energy conversion and storage technologies. In situ studies of the evolution of catalysts during oxygen electrocatalysis can provide important insights into their structure - activity relationships and stabilities under working conditions. Among the various in situ characterization tools available, in situ electron microscopy has the unique ability to perform structural and compositional analyzes with high spatial resolution. In this review, we present the latest developments in in situ and quasi-in situ electron microscopic techniques, including identical location electron microscopy, in situ liquid cell (scanning) transmission electron microscopy and in situ environmental transmission electron microscopy, and elaborate their applications in the ORR and OER. Our discussion centers on the degradation mechanism, structural evolution and structure - performance correlations of electrocatalysts. Finally, we summarize the earlier discussions and share our perspectives on the current challenges and future research directions of using in situ electron microscopy to explore oxygen electrocatalysis and related processes.

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Section: Orrmentioning

confidence: 99%

Applications of in situ electron microscopy in oxygen electrocatalysis

Wu¹,

Zhang²,

Chen³

et al. 2022

Microstructures

Self Cite

View full text Add to dashboard Cite

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Insights into Heterogeneous Catalysts under Reaction Conditions by In Situ/Operando Electron Microscopy

Cheng

Wang

Chen

et al. 2022

Advanced Energy Materials

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The advancement of clean energy and environment depends strongly on the development of efficient catalysts in a wide range of heterogeneous catalytic reactions, which has benefited from transmission electron microscopic techniques in determining the atomic‐scale morphologies and structures. However, it is the morphology and structure under the catalytic reaction conditions that determine the performance of the catalyst, which has captured a surge of interest in developing and applying in situ/operando transmission electron microscopic techniques in heterogeneous catalysis. The major theme of this review is to highlight some of the most recent insights into heterogeneous catalysts under the relevant reaction conditions using in situ/operando transmission electron microscopic techniques. Rather than a comprehensive overview of the basic principles of in situ/operando techniques, this review focuses on the insights into the atomic‐scale/nanoscale details of various catalysts ranging from single‐component to multicomponent catalysts under heterogeneous catalytic, electrocatalytic, and photocatalytic reaction conditions involving both gas–solid and liquid–solid interfaces. This focus is coupled with discussions of the correlation of the atomic, molecular, and nanoscale morphology, composition, and structure with the catalytic properties under the reaction conditions, shining light on the challenges and opportunities in design of nanostructured catalysts for clean and sustainable energy applications.

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Multimetallic Catalysts and Electrocatalysts: Dynamic Core–Shell Nanostructures

Cited by 2 publications

References 41 publications

Applications of in situ electron microscopy in oxygen electrocatalysis

Applications of in situ electron microscopy in oxygen electrocatalysis

Insights into Heterogeneous Catalysts under Reaction Conditions by In Situ/Operando Electron Microscopy

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