Morphology-controlled synthesis of ternary Pt–Pd–Cu alloy nanoparticles for efficient electrocatalytic oxygen reduction reactions

Ryu, Jaeyune; Choi, Jonghyun; Lim, Dong‐Hee; Seo, Hye-Lin; Lee, Sang Young; Sohn, Yeonsun; Park, Jin Hoo; Jang, Jong Hyun; Kim, Hyoung‐Juhn; Hong, Seong Ahn; Kim, Pil; Yoo, Sung Jong

doi:10.1016/j.apcatb.2015.03.019

Cited by 46 publications

(17 citation statements)

References 40 publications

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“…As for PdM (M = Ni, Co, Fe, and Cu) cores, these have also been extensively studied as catalysts for ORRs and organic small molecules [76,114,115,119,127,128,135,298,400,[493][494][495][496][497][498][499]. In these reports, there are many reported similarities between PdM@Pt with PtM@Pt catalysts.…”

Section: Ptcu Alloy As Corementioning

confidence: 92%

“…5) as a result of the difference in standard reduction potentials between Cu 2+ /Cu (E 0 = 0.3 V) and Pt 4+ /Pt (E 0 = 1.44 V). A series of electrocatalysts possessing Cu or Cu alloy cores and Pt shells have also been prepared in various experiments by using this simplified two-step seed-mediated growth method consisting of the galvanic replacement reaction [114,124,125,137]. Other core-shell-structured electrocatalysts such as Au@Pt and Ag@Pt have also been synthesized by using this principle as well [117,130].…”

Section: Principles and Development Of Wet Chemical Depositionmentioning

confidence: 99%

“…Therefore, from an electrochemical point of view, the galvanic displacement method is also an electrochemical method (reviewed by Petrii et al [136]) which can be regarded as a chemical procedure for the synthesis of core-shell-structured electrocatalysts. For example, in a study conducted by Ryu et al [114], a Pt shell was deposited onto a PdCu core (Fig. 5) as a result of the difference in standard reduction potentials between Cu 2+ /Cu (E 0 = 0.3 V) and Pt 4+ /Pt (E 0 = 1.44 V).…”

Section: Principles and Development Of Wet Chemical Depositionmentioning

confidence: 99%

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Core–Shell-Structured Low-Platinum Electrocatalysts for Fuel Cell Applications

Wang

Luo

et al. 2018

Electrochem. Energ. Rev.

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Pt-based catalysts are the most efficient catalysts for low-temperature fuel cells. However, commercialization is impeded by prohibitively high costs and scarcity. One of the most effective strategies to reduce Pt loading is to deposit a monolayer or a few layers of Pt over other metal cores to form core-shell-structured electrocatalysts. In core-shell-structured electrocatalysts, the compositions of the core can be divided into five classes: single-precious metallic cores represented by Pd, Ru, and Au; singlenon-precious metallic cores represented by Cu, Ni, Co, and Fe; alloy cores containing 3d, 4d or 5d metals; and carbide and nitride cores. Of these, researchers have found that carbide and nitride cores can yield tremendous advantages over alloy cores in terms of cost and promotional activities of Pt shells. In addition, desirable shells with reasonable thicknesses and compositions have been recognized to play a dominant role in electrocatalytic performances. And recently, researchers have also found that the catalytic activity of core-shell-structured catalysts is dependent on the binding energy of the adsorbents, which is determined by the d-band center of Pt. The shifting of this d-band center in turn is mainly affected by strain and electronic effects, which can be adjusted by adjusting core compositions and shell thicknesses of catalysts. In the development of these core-shell structures, optimal synthesis methods are of primary concern because they directly determine the practical application potential of the resulting electrocatalysts. And in this article, the principles behind core-shell-structured low-Pt electrocatalysts and the developmental progresses of various synthesis methods along with the traits of each type of core and its effects on Pt shell catalytic activities are discussed. In addition, perspectives on this type of catalyst are discussed and future research directions are proposed.

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Section: Ptcu Alloy As Corementioning

confidence: 92%

Section: Principles and Development Of Wet Chemical Depositionmentioning

confidence: 99%

Section: Principles and Development Of Wet Chemical Depositionmentioning

confidence: 99%

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Core–Shell-Structured Low-Platinum Electrocatalysts for Fuel Cell Applications

Wang

Luo

et al. 2018

Electrochem. Energ. Rev.

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“…kinetic sluggishness). [4][5][6] Platinum (Pt) and Pt-based alloys have been studied extensivelya sa ctive catalysts toward the ORR, among other preciousm etals. [4] Though,w ide-spreadf uel cell commercialization has been hindered by seriousi ntermediate tolerance, species crossover,s luggishk inetics, poor stabilityi n the electrochemical environment, as well as the high cost and limited supply of Pt.…”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6] Platinum (Pt) and Pt-based alloys have been studied extensivelya sa ctive catalysts toward the ORR, among other preciousm etals. [4] Though,w ide-spreadf uel cell commercialization has been hindered by seriousi ntermediate tolerance, species crossover,s luggishk inetics, poor stabilityi n the electrochemical environment, as well as the high cost and limited supply of Pt. [2,4,7] In addition, Pt dissolves under fuel cell operating conditions, [7] but although Pt catalysts possess some advantages for cathodef unctionality under very severe conditions at highly positive potentials, such as low pH, high temperature, oxygen atmosphere,a nd high humidity, it also suffers from severald isadvantages.…”

Section: Introductionmentioning

confidence: 99%

Modification of TiO₂ Nanotubes with PtRu/Graphene Nanocomposites for Enhanced Oxygen Reduction Reaction

2015

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The oxygen reduction reaction (ORR) is one of the key fundamental reactions that occur at electrocatalytic cathode surfaces for fuel cell applications. Herein, we report the development of a series of nanocomposites of reduced graphene oxide (rGO) and PtRu nanoparticles with different atomic ratios of Pt/Ru deposited on titanium dioxide nanotubes (TiO2NTs) (termed as TiO2NT/rGO–PtRu) for the ORR. The TiO2NT/rGO–PtRu nanocomposites were prepared by using a facile one‐step electrochemical deposition, and characterized through field‐emission scanning electron microscopy, energy dispersive X‐ray spectroscopy, X‐ray diffraction, and X‐ray photoelectron spectroscopy. Our experimental results have shown that the synthesized TiO2NT/rGO–PtRu nanocomposite with a Pt/Ru ratio of 64:36 exhibits the highest electrocatalytic activity toward the ORR with an onset potential of 0.58 V (vs. RHE) and a high stability, which is promising for environmental and green energy applications.

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Highly Stable Pt‐Based Ternary Systems for Oxygen Reduction Reaction in Acidic Electrolytes

Kim

Hong

Lee

et al. 2020

Advanced Energy Materials

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electrolytes, have received considerable attention. PAFCs are best suited for stationary power with combined heat and power, and have high overall efficiency and long system lifetimes, while PEMFCs are typically used in automobiles and portable electronics because of their compact size, light weight, high power density, and low operating temperature. [5,6] However, critical components in both PAFCs and PEMFCs, including electrodes, membranes, and catalysts, are still being intensively developed to resolve serious issues in performance, cost, and durability. The latest development plan for fuel cells from the U.S. Department of Energy suggests that more durable and stable catalysts for PAFCs will be necessary to ensure prolonged operation with less cost. [7] Also, the durability and cost of PEMFCs must be improved for commercialization in lightduty vehicles (Figure 1a). This is due in part to costly Pt catalysts, which comprise a significant fraction of the total production cost of PEMFCs (Figure 1b). [8] Overall, more highly efficient and robust Pt-based catalysts are essential to ensure wider use of clean and sustainable hydrogen fuel cell systems.

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Morphology-controlled synthesis of ternary Pt–Pd–Cu alloy nanoparticles for efficient electrocatalytic oxygen reduction reactions

Cited by 46 publications

References 40 publications

Core–Shell-Structured Low-Platinum Electrocatalysts for Fuel Cell Applications

Core–Shell-Structured Low-Platinum Electrocatalysts for Fuel Cell Applications

Modification of TiO₂ Nanotubes with PtRu/Graphene Nanocomposites for Enhanced Oxygen Reduction Reaction

Highly Stable Pt‐Based Ternary Systems for Oxygen Reduction Reaction in Acidic Electrolytes

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Morphology-controlled synthesis of ternary Pt–Pd–Cu alloy nanoparticles for efficient electrocatalytic oxygen reduction reactions

Cited by 46 publications

References 40 publications

Core–Shell-Structured Low-Platinum Electrocatalysts for Fuel Cell Applications

Core–Shell-Structured Low-Platinum Electrocatalysts for Fuel Cell Applications

Modification of TiO2 Nanotubes with PtRu/Graphene Nanocomposites for Enhanced Oxygen Reduction Reaction

Highly Stable Pt‐Based Ternary Systems for Oxygen Reduction Reaction in Acidic Electrolytes

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Product

Resources

About

Modification of TiO₂ Nanotubes with PtRu/Graphene Nanocomposites for Enhanced Oxygen Reduction Reaction