Preparation and characterization of core–shell structured catalysts using PtxPdy as active shell and nano-sized Ru as core for potential direct formic acid fuel cell application

Gao, Haili; Liao, Shijun; Zeng, Jianhuang; Xie, Yichun; Dang, Dai

doi:10.1016/j.electacta.2010.11.090

Cited by 39 publications

(16 citation statements)

References 31 publications

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“…One of the main line of research is the synthesis of nanocatalysts with modulated electrocatalytic properties [2]. The latter can make a substantial improvement in membrane-electrode assemblies for a better performance and stability in different types of fuel cells [3]. At present, there are several methods reported for synthesizing electrocatalysts materials being colloidal method [4] and chemical reduction ones of the most popular [5].…”

Section: Introductionmentioning

confidence: 99%

Enhanced electroactivity for the oxygen reduction on Ni@Pt core-shell nanocatalysts

Godínez-Salomón

Hallen‐Lopez²,

Solorza‐Feria

2012

International Journal of Hydrogen Energy

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Section: Introductionmentioning

confidence: 99%

Enhanced electroactivity for the oxygen reduction on Ni@Pt core-shell nanocatalysts

Godínez-Salomón

Hallen‐Lopez²,

Solorza‐Feria

2012

International Journal of Hydrogen Energy

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“…[17] Inspired by these results, variousc ombinations of platinum-based trimetallic electrocatalysts, such as PtMN (M,N= Pd, Au, Ru, Ir,N i, Co, Fe, Cu, Mn), have been synthesized, which show highelectrocatalytic activities. [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] Surface structure engineering represents another powerful avenue to tune and boost the catalytic performance of platinum and platinum-based catalysts. [3,33,34] In this regard, much attention has recently been paid to the synthesiso fv arious platinum-based nanomaterialsw ith different morphologies and structures, such as nanowires, [27] nanorods, [35][36][37] nanocubes, [38,39] and nanodendrities.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Dual Fuel Cell Electrocatalysis with Trimetallic PtPdCo Mesoporous Nanoparticles

et al. 2018

Chemistry An Asian Journal

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The facile preparation of platinum-based catalysts with designed compositions and structures is of great importance for fuel cells. In this work, a one-pot method is developed to synthesize monodispersed trimetallic PtPdCo mesoporous nanoparticles (PtPdCo MNs) with uniform morphology and size. The proposed synthetic method does not require any hard template or organic solvent, which greatly simplifies the preparation procedure. PtPdCo MNs, with a highly porous structure, exhibit enhanced electrocatalytic activities and excellent stabilities for both the formic acid oxidation reaction and the oxygen reduction reaction, relative to bimetallic PtPd MNs and commercial Pt/C catalyst. The proposed synthetic method is highly valuable for the design of mesoporous multimetallic catalysts for fuel cells.

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“…Pd is another precious metal that has been composited into Pt shells by many groups because PtPd bimetallic systems are the best among bimetallic catalysts for ORRs [106,123,150,[555][556][557]. Here, experiments carried out on mixed-PtPd-shell PtPdCu nanoparticle nanotubes have demonstrated that PtPd shells over Cu cores can produce not only better catalytic activities but also superior durability toward ORRs than Pt shells on Cu cores.…”

Section: Core-shell-structured Catalysts With Alloy Shellsmentioning

confidence: 90%

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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Preparation and characterization of core–shell structured catalysts using PtxPdy as active shell and nano-sized Ru as core for potential direct formic acid fuel cell application

Cited by 39 publications

References 31 publications

Enhanced electroactivity for the oxygen reduction on Ni@Pt core-shell nanocatalysts

Enhanced electroactivity for the oxygen reduction on Ni@Pt core-shell nanocatalysts

Enhanced Dual Fuel Cell Electrocatalysis with Trimetallic PtPdCo Mesoporous Nanoparticles

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

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