Conversion of PtNi alloy from disordered to ordered for enhanced activity and durability in methanol-tolerant oxygen reduction reactions

Zou, Liangliang; Fan, Jinghong; Zhou, Yi; Wang, Congmin; Li, Jun; Zou, Zhiqing; Yang, Hui

doi:10.1007/s12274-015-0784-0

Cited by 141 publications

(95 citation statements)

References 39 publications

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“…Following RPC, for O‐PtNi/C, the ORR MA slightly decreased (ca. 10%) and the Pt/Ni ratio slightly increased to 1.4, whereas for D‐PtNi/C, the ORR MA of D‐PtNi/C decreased by 28% and the Pt/Ni ratio increased to 3.2, showing that the intermetallic PtNi phase is electrochemically and structurally more stable than the random PtNi solid solution …”

Section: Orr On Pt‐ni Electrocatalystsmentioning

confidence: 98%

“…Many papers have been addressed to the oxygen reduction on both supported and unsupported disordered solid cubo‐octahedral fcc Pt 1‐ x Ni x nanoparticles and disordered fcc Pt 1‐ x Ni x thin films . The Pt‐Ni to Pt ORR specific activity ( SA Pt‐Ni /SA Pt ) in acid media of carbon‐supported cubo‐octahedral disordered solid fcc Pt 1‐ x Ni x nanoparticles and electrodeposited Pt 1‐ x Ni x thin films by different datasets vs Ni content in the catalyst plot is shown in Figure A. The SA Pt‐Ni /SA Pt vs Ni content data are rather scattered, but they are roughly represented by a curve presenting a maximum for a nickel content of 48 at%.…”

Section: Orr On Pt‐ni Electrocatalystsmentioning

confidence: 99%

“…Dependence of the Pt‐Ni to Pt ORR specific activity ( SA Pt‐Ni /SA Pt ), mass activity ( MA Pt‐Ni /MA Pt ) and electrochemically active surface area ( ECSA Pt‐Ni /ECSA Pt ) ratios in acid media (Figures A, D, E) and of PtNi fcc lattice parameters (Figure B) on Ni content in the catalyst (data from different datasets), and dependence of ( SA Pt‐Ni /SA Pt ) on fcc lattice parameter (Figure C). Symbols in Figure A, D, E: (►) Colón‐Mercado et al, (◄) Yang et al, (*) Dubau et al, (▲) Kim et al, (▾) Loukrakpam et al, (♦) Rudi et al, (+) Zou et al, (●) Wang et al, and ( ■ ) Liu et al [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Orr On Pt‐ni Electrocatalystsmentioning

confidence: 99%

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The oxygen reduction on Pt-Ni and Pt-Ni-M catalysts for low-temperature acidic fuel cells: A review

Antolini¹

2018

Int J Energy Res

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Summary For its wide availability and low cost, nickel is a promising candidate to be used as a cocatalyst in Pt‐based catalysts for proton exchange membrane fuel cells. Among Pt‐M (M = transition metal) catalysts for oxygen reduction, Pt‐Ni is the one which can be used in various forms, that is, as disordered Pt1‐xNix solid solutions, ordered intermetallic phases, octahedral‐shaped structures (with a preferential {111} facet orientation), dealloyed structures, and hollow and 1‐dimensional nanostructures. In this work, an overview of the oxygen reduction on Pt‐Ni and Pt‐Ni‐M (M = Co, Fe, Cu) catalysts and their stability in proton exchange membrane fuel cell environment is presented.

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Section: Orr On Pt‐ni Electrocatalystsmentioning

confidence: 98%

Section: Orr On Pt‐ni Electrocatalystsmentioning

confidence: 99%

Section: Orr On Pt‐ni Electrocatalystsmentioning

confidence: 99%

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The oxygen reduction on Pt-Ni and Pt-Ni-M catalysts for low-temperature acidic fuel cells: A review

Antolini¹

2018

Int J Energy Res

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“…[31][32][33][34] Reducing the Pt loading without compromising its performance is the target of electrocatalytic investigations. There are a great quantity of works on Ptbased bimetallic electrocatalysts, such as alloying Pt with 3d-transition metals, including Fe, [38,39] Co, [40][41][42] Ni, [43,44] and Cu. There are a great quantity of works on Ptbased bimetallic electrocatalysts, such as alloying Pt with 3d-transition metals, including Fe, [38,39] Co, [40][41][42] Ni, [43,44] and Cu.…”

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confidence: 99%

A Comprehensive Review on Controlling Surface Composition of Pt‐Based Bimetallic Electrocatalysts

Zhang

Yang

Wang

et al. 2018

Advanced Energy Materials

137

104

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version efficiency. [12][13][14][15] Among these metal electrocatalysts, platinum (Pt) exhibits the best activity for formic acid electrooxidation, ethanol electrooxidation, and oxygen reduction. However, pure Pt electrocatalyst faces several severe shortages, which limit its wide application in fuel cells. First, for formic acid and ethanol electrooxidation on pure Pt, the poisoning phenomenon (poison intermediates adsorption) usually happens on the surface of Pt, which will significantly decrease its electrocatalytic performance. [16][17][18][19][20] Second, for cathodic reaction, the oxygen reduction on pure Pt is sluggish. [21][22][23][24] Third, Pt is noble metal, which is limited reserve in nature. Therefore, how to reduce the Pt content and at the same time maintain its electrochemical performance are critical to achieve the commercialization of fuel cell.Bimetallic nanomaterials play an essential role in electrochemical energy conversion and storage, such as in fuel cells and metal-air batteries. [25][26][27] Unlike their monometallic counterparts, bimetallic nanomaterials ordinarily present better performance beneficial from synergistic effects, which means that the electrochemical performance of the whole will be superior than the sum of its parts. [28][29][30] In the case of the noble metals (especially Pt), their high cost and scarcity are obstructing the commercial viability of fuel cells. [31][32][33][34] Reducing the Pt loading without compromising its performance is the target of electrocatalytic investigations. [35][36][37] The typical approach is to incorporate with another metal, which could obtain better performance with much prolonged duration than the traditional commercial Pt/C. There are a great quantity of works on Ptbased bimetallic electrocatalysts, such as alloying Pt with 3d-transition metals, including Fe, [38,39] Co, [40][41][42] Ni, [43,44] and Cu. [45,46] PtM (M = Fe, Co, Ni, etc.) bimetallic nanomaterials have been demonstrated to be promising electrocatalysts, which strategic enhancement and development of the performance of commercial Pt/C electrocatalyst; and fundamental researches have shown that the enhanced catalytic activity originates from the modified electronic structures and geometric structures of Pt in these alloy catalysts. [47][48][49] It is a remarkable fact that these electrocatalytic reactions merely occur on the surface of the electrocatalysts. [28,50] Thus, the surface constituents of electrocatalysts determine the adsorption/desorption behaviors of the reactants and intermediates during the electrochemical reaction. Therefore, the catalytic reactions mechanisms and efficiencies strongly rely on the With increasing energy demands worldwide, significant efforts have been made to develop superior electrocatalysts for efficient energy conversion systems. Among all the electrocatalysts exploited, Pt-based bimetallic nanomaterials stand out by virtue of their high catalytic activity and relatively low cost due to the introduction of a nonprecious metal component. I...

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“…65-2797). 15 The chemical state of Ni 88 Pt 12 was examined by X-ray photoelectron spectroscopy (XPS), as shown in Fig. 1e 16 The Pt 4f core level was tted using two doublets Pt 4f 7/2 -Pt 4f 5/2 with a xed area ratio equal to 4 : 3 and doublet separation of 3.3 eV.…”

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confidence: 99%

Microemulsion prepared Ni₈₈Pt₁₂ for methane cracking

Harb

Hedhili

et al. 2017

RSC Adv.

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Conversion of PtNi alloy from disordered to ordered for enhanced activity and durability in methanol-tolerant oxygen reduction reactions

Cited by 141 publications

References 39 publications

The oxygen reduction on Pt-Ni and Pt-Ni-M catalysts for low-temperature acidic fuel cells: A review

The oxygen reduction on Pt-Ni and Pt-Ni-M catalysts for low-temperature acidic fuel cells: A review

A Comprehensive Review on Controlling Surface Composition of Pt‐Based Bimetallic Electrocatalysts

Microemulsion prepared Ni₈₈Pt₁₂ for methane cracking

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Conversion of PtNi alloy from disordered to ordered for enhanced activity and durability in methanol-tolerant oxygen reduction reactions

Cited by 141 publications

References 39 publications

The oxygen reduction on Pt-Ni and Pt-Ni-M catalysts for low-temperature acidic fuel cells: A review

The oxygen reduction on Pt-Ni and Pt-Ni-M catalysts for low-temperature acidic fuel cells: A review

A Comprehensive Review on Controlling Surface Composition of Pt‐Based Bimetallic Electrocatalysts

Microemulsion prepared Ni88Pt12 for methane cracking

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Product

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Microemulsion prepared Ni₈₈Pt₁₂ for methane cracking