Scalable Nanoporous (Pt1-xNix)3Al Intermetallic Compounds as Highly Active and Stable Catalysts for Oxygen Electroreduction

Gao Feng Han; Lin Gu; Xing You Lang; Bei Bei Xiao; Zhen Zhong Yang; Zi Wen; Qing Jiang

doi:10.1021/acsami.6b12553

Scalable Nanoporous (Pt_1-xNi_x)₃Al Intermetallic Compounds as Highly Active and Stable Catalysts for Oxygen Electroreduction

Gao Feng Han
, Lin Gu
, Xing You Lang^*
, Bei Bei Xiao
, Zhen Zhong Yang
, Zi Wen
, Qing Jiang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

Author: Bimetallic platinum-nickel (Pt-Ni) alloys as oxygen reduction reaction (ORR) electrocatalysts show genuine potential to boost widespread use of low-temperature fuel cells in vehicles by virtue of their high catalytic activity. However, their practical implementation encounters primary challenges in structural and catalytic durability caused by the low formation heat of Pt-Ni alloys. Here, we report nanoporous (NP) (Pt_1-xNi_x)₃Al intermetallic nanoparticles as oxygen electroreduction catalyst NP (Pt_1-xNi_x)₃Al, which circumvents this problem by making use of the extraordinarily negative formation heats of Pt-Al and Ni-Al bonds. The NP (Pt_1-xNi_x)₃Al nanocatalyst, which is mass-produced by alloying/dealloying and mechanical crushing technologies, exhibits specific activity of 3.6 mA cm^-2_Pt and mass activity of 2.4 A mg^-1_Pt at 0.90 V as a result of both ligand and compressive strain effects, while strong Ni-Al and Pt-Al bonds ensure their exceptional durability by alleviating evolution of Pt, Ni, and Al components and dissolutions of Ni and Al atoms.

Original language	English
Pages (from-to)	32910-32917
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	8
Issue number	48
DOIs	https://doi.org/10.1021/acsami.6b12553
State	Published - 7 Dec 2016
Externally published	Yes

Keywords

dealloying
electrocatalysis
fuel cells
intermetallic compounds
nanoporous metals
oxygen reduction reaction
platinum alloys

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10.1021/acsami.6b12553

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@article{0939b105111e443fb0ce50a3f762053d,

title = "Scalable Nanoporous (Pt1-xNix)3Al Intermetallic Compounds as Highly Active and Stable Catalysts for Oxygen Electroreduction",

abstract = "Author: Bimetallic platinum-nickel (Pt-Ni) alloys as oxygen reduction reaction (ORR) electrocatalysts show genuine potential to boost widespread use of low-temperature fuel cells in vehicles by virtue of their high catalytic activity. However, their practical implementation encounters primary challenges in structural and catalytic durability caused by the low formation heat of Pt-Ni alloys. Here, we report nanoporous (NP) (Pt1-xNix)3Al intermetallic nanoparticles as oxygen electroreduction catalyst NP (Pt1-xNix)3Al, which circumvents this problem by making use of the extraordinarily negative formation heats of Pt-Al and Ni-Al bonds. The NP (Pt1-xNix)3Al nanocatalyst, which is mass-produced by alloying/dealloying and mechanical crushing technologies, exhibits specific activity of 3.6 mA cm-2Pt and mass activity of 2.4 A mg-1Pt at 0.90 V as a result of both ligand and compressive strain effects, while strong Ni-Al and Pt-Al bonds ensure their exceptional durability by alleviating evolution of Pt, Ni, and Al components and dissolutions of Ni and Al atoms.",

keywords = "dealloying, electrocatalysis, fuel cells, intermetallic compounds, nanoporous metals, oxygen reduction reaction, platinum alloys",

author = "Han, \{Gao Feng\} and Lin Gu and Lang, \{Xing You\} and Xiao, \{Bei Bei\} and Yang, \{Zhen Zhong\} and Zi Wen and Qing Jiang",

note = "Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

year = "2016",

month = dec,

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doi = "10.1021/acsami.6b12553",

language = "英语",

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journal = "ACS Applied Materials and Interfaces",

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publisher = "American Chemical Society",

number = "48",

}

TY - JOUR

T1 - Scalable Nanoporous (Pt1-xNix)3Al Intermetallic Compounds as Highly Active and Stable Catalysts for Oxygen Electroreduction

AU - Han, Gao Feng

AU - Gu, Lin

AU - Lang, Xing You

AU - Xiao, Bei Bei

AU - Yang, Zhen Zhong

AU - Wen, Zi

AU - Jiang, Qing

PY - 2016/12/7

Y1 - 2016/12/7

N2 - Author: Bimetallic platinum-nickel (Pt-Ni) alloys as oxygen reduction reaction (ORR) electrocatalysts show genuine potential to boost widespread use of low-temperature fuel cells in vehicles by virtue of their high catalytic activity. However, their practical implementation encounters primary challenges in structural and catalytic durability caused by the low formation heat of Pt-Ni alloys. Here, we report nanoporous (NP) (Pt1-xNix)3Al intermetallic nanoparticles as oxygen electroreduction catalyst NP (Pt1-xNix)3Al, which circumvents this problem by making use of the extraordinarily negative formation heats of Pt-Al and Ni-Al bonds. The NP (Pt1-xNix)3Al nanocatalyst, which is mass-produced by alloying/dealloying and mechanical crushing technologies, exhibits specific activity of 3.6 mA cm-2Pt and mass activity of 2.4 A mg-1Pt at 0.90 V as a result of both ligand and compressive strain effects, while strong Ni-Al and Pt-Al bonds ensure their exceptional durability by alleviating evolution of Pt, Ni, and Al components and dissolutions of Ni and Al atoms.

AB - Author: Bimetallic platinum-nickel (Pt-Ni) alloys as oxygen reduction reaction (ORR) electrocatalysts show genuine potential to boost widespread use of low-temperature fuel cells in vehicles by virtue of their high catalytic activity. However, their practical implementation encounters primary challenges in structural and catalytic durability caused by the low formation heat of Pt-Ni alloys. Here, we report nanoporous (NP) (Pt1-xNix)3Al intermetallic nanoparticles as oxygen electroreduction catalyst NP (Pt1-xNix)3Al, which circumvents this problem by making use of the extraordinarily negative formation heats of Pt-Al and Ni-Al bonds. The NP (Pt1-xNix)3Al nanocatalyst, which is mass-produced by alloying/dealloying and mechanical crushing technologies, exhibits specific activity of 3.6 mA cm-2Pt and mass activity of 2.4 A mg-1Pt at 0.90 V as a result of both ligand and compressive strain effects, while strong Ni-Al and Pt-Al bonds ensure their exceptional durability by alleviating evolution of Pt, Ni, and Al components and dissolutions of Ni and Al atoms.

KW - dealloying

KW - electrocatalysis

KW - fuel cells

KW - intermetallic compounds

KW - nanoporous metals

KW - oxygen reduction reaction

KW - platinum alloys

UR - https://www.scopus.com/pages/publications/85002827481

U2 - 10.1021/acsami.6b12553

DO - 10.1021/acsami.6b12553

M3 - 文章

AN - SCOPUS:85002827481

SN - 1944-8244

VL - 8

SP - 32910

EP - 32917

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 48

ER -

Scalable Nanoporous (Pt_1-xNi_x)₃Al Intermetallic Compounds as Highly Active and Stable Catalysts for Oxygen Electroreduction

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