Structurally Ordered Fe<sub>3</sub>Pt Nanoparticles on Robust Nitride Support as a High Performance Catalyst for the Oxygen Reduction Reaction

Liu, Quanbing; Du, Li; Fu, Gengtao; Cui, Zhiming; Li, Yutao; Dang, Dai; Gao, Xiang; Zheng, Qiang; Goodenough, John B.

doi:10.1002/aenm.201803040

Cited by 103 publications

(72 citation statements)

References 41 publications

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“…In the literature, intermetallic alloys have already caught much attention due to their promising ORR performance ( Gamler et al., 2018 ; Hodnik et al., 2014 ; Li and Sun, 2019 ; Pavlišič et al., 2016 ; Rößner and Armbrüster, 2019 ; Zhang et al., 2020 ). However, although we can find many reports on intermetallic alloys of Pt-Cu ( Bele et al., 2014 ; Gatalo et al, 2019a , 2019b , 2019c , 2019d ; Hodnik et al., 2012a , 2014 ; Pavlišič et al., 2016 ) and Pt-Fe ( Liu et al., 2019 ; Wang et al., 2019b ; Wittig et al., 2017 ), the reports on intermetallic phases of more industrially relevant Pt-Co ( Cui et al., 2020 ; Xiong et al., 2019 ) and even more so Pt-Ni alloys ( Lu et al., 2009 ) are still very scarce ( Leonard et al., 2011 ; Zou et al., 2015 ). Careful examination of the XRD spectra also reveals the presence of pure M phases in Pt-M/C electrocatalysts containing Fe, Ni, and Co ( Figure 3 D; as pointed by the arrows).…”

Section: Resultsmentioning

confidence: 99%

Resolving the nanoparticles' structure-property relationships at the atomic level: a study of Pt-based electrocatalysts

et al. 2021

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Summary Achieving highly active and stable oxygen reduction reaction performance at low platinum-group-metal loadings remains one of the grand challenges in the proton-exchange membrane fuel cells community. Currently, state-of-the-art electrocatalysts are high-surface-area-carbon-supported nanoalloys of platinum with different transition metals (Cu, Ni, Fe, and Co). Despite years of focused research, the established structure-property relationships are not able to explain and predict the electrochemical performance and behavior of the real nanoparticulate systems. In the first part of this work, we reveal the complexity of commercially available platinum-based electrocatalysts and their electrochemical behavior. In the second part, we introduce a bottom-up approach where atomically resolved properties, structural changes, and strain analysis are recorded as well as analyzed on an individual nanoparticle before and after electrochemical conditions (e.g. high current density). Our methodology offers a new level of understanding of structure-stability relationships of practically viable nanoparticulate systems.

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Section: Resultsmentioning

confidence: 99%

Resolving the nanoparticles' structure-property relationships at the atomic level: a study of Pt-based electrocatalysts

et al. 2021

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“…In this field, one severe issue is the dissolution of core metals in operation, and thus strategies focused on increasing stability are as important as further improving activity. Until now, feasible solutions involve (i) the use of multiple smooth‐featured Pt layers, (ii) employing an ordered intermetallic core structure with Pt and secondary metals occupying definite positions and (iii) nitriding …”

Section: Practical Methods To Enhance Orr Activitymentioning

confidence: 99%

Enhancing Oxygen Reduction Activity of Pt‐based Electrocatalysts: From Theoretical Mechanisms to Practical Methods

Cano

et al. 2020

Angewandte Chemie

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Pt‐based electrocatalysts are considered as one of the most promising choices to facilitate the oxygen reduction reaction (ORR), and the key factor enabling their success is to reduce the required amount of platinum. Herein, we focus on illuminating both the theoretical mechanisms which enable enhanced and sustained ORR activity and the practical methods to achieve them in catalysts. The various multi‐step pathways of ORR are firstly reviewed and the rate‐determining steps based on the reaction intermediates and their binding energies are analyzed. We then explain the critical aspects of Pt‐based electrocatalysts to tune oxygen reduction properties from the viewpoints of active sites exposure and altering the surface electronic structure, and further summarize representative research progress towards practically achieving these activity enhancements with a focus on platinum size reduction, shape control and core Pt elimination methods. We finally outline the remaining challenges and provide our perspectives with regard to further enhancing their activities.

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“…Pt‐based catalysts exhibit high electrochemical catalytic activities in ORR while the high cost and shortage of Pt largely hinder their commercialization for fuel cells. [ 96 ] Considerable effort has been devoted to reducing the use of Pt without the compromise of catalyst activity, such as using Pt clusters, [ 97 ] design of alloy Pt with non‐noble metals, [ 69,98 ] and composite with mesoporous supports. [ 99 ] For instance, a serial of Pt clusters as ORR catalysts have been demonstrated.…”

Section: Electrochemical Energy Conversionmentioning

confidence: 99%

Mesoporous Materials for Electrochemical Energy Storage and Conversion

Zhang

et al. 2020

Advanced Energy Materials

238

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electric grids, as well as biocompatible technologies, has attracted tremendous attention and is still a big challenge in the energy field. [1-4] The electrochemical energy storage and conversion devices, such as rechargeable batteries, supercapacitors, fuel cells, and electrolyzers, have been extensively explored. It is well known that electrode materials, e.g., anodes, cathodes, and catalysts, are the heart components of these devices, which play a decisive role in determining performance. Mesoporous materials, which have pore sizes ranging from 2 to 50 nm defined by the International Union of Pure and Applied Chemistry, possess exceptional features, including high specific surface areas, large pore volumes, tunable pore sizes, and controllable geometries (Figure 1a-c). These features enable mesoporous materials as ideal candidates for energy conversion and storage because of the increased active reaction sites and enhanced transport efficiency of reactants. [3,5-7] Therefore, many precise manipulations and structural engineering strategies have been applied to construct advanced mesoporous electrodes with excellent electrochemical performance. Besides, the achieved electrodes with well-controlled mesoporous architectures could be used as platforms to study the fundamental research about the mass transport kinetics, charge transfer, and storage mechanism, as well as the interface electrochemical reactions behavior under the mesoporous nanoconfined space (Figure 1d-g). These fundamental studies are of great importance for further guiding the design of high-performance mesoporous electrodes for electrochemical energy storage and conversion. [6,8,9] In this Essay, we introduce the methods for synthesizing different types of mesoporous materials. Also, the key developments of applications of mesoporous materials in electrochemical energy conversion and storage devices are highlighted. The synthesis-structure-property of mesoporous materials and their applications in rechargeable batteries, supercapacitors, fuel cells, and electrolyzers have been detailed, providing creative insight and enlightening comments on the construction of high-performance mesoporous electrodes. Following these, we propose the research challenges and perspectives on mesoporous materials for the future development of energy conversion and storage devices. Developing high-performance electrode materials is an urgent requirement for next-generation energy conversion and storage systems. Due to the exceptional features, mesoporous materials have shown great potential to achieve high-performance electrodes with high energy/power density, long lifetime, increased interfacial reaction activity, and enhanced kinetics. In this Essay, applications of mesoporous materials are reviewed in electrochemical energy conversion and storage devices. The synthesis, structure, and properties of mesoporous materials and their performance in rechargeable batteries, supercapacitors, fuel cells, and electrolyzers are discussed, providing practical details and enligh...

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Structurally Ordered Fe₃Pt Nanoparticles on Robust Nitride Support as a High Performance Catalyst for the Oxygen Reduction Reaction

Cited by 103 publications

References 41 publications

Resolving the nanoparticles' structure-property relationships at the atomic level: a study of Pt-based electrocatalysts

Resolving the nanoparticles' structure-property relationships at the atomic level: a study of Pt-based electrocatalysts

Enhancing Oxygen Reduction Activity of Pt‐based Electrocatalysts: From Theoretical Mechanisms to Practical Methods

Mesoporous Materials for Electrochemical Energy Storage and Conversion

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Structurally Ordered Fe3Pt Nanoparticles on Robust Nitride Support as a High Performance Catalyst for the Oxygen Reduction Reaction

Cited by 103 publications

References 41 publications

Resolving the nanoparticles' structure-property relationships at the atomic level: a study of Pt-based electrocatalysts

Resolving the nanoparticles' structure-property relationships at the atomic level: a study of Pt-based electrocatalysts

Enhancing Oxygen Reduction Activity of Pt‐based Electrocatalysts: From Theoretical Mechanisms to Practical Methods

Mesoporous Materials for Electrochemical Energy Storage and Conversion

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Product

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Structurally Ordered Fe₃Pt Nanoparticles on Robust Nitride Support as a High Performance Catalyst for the Oxygen Reduction Reaction