The study of Pt@Au electrocatalyst based on Cu underpotential deposition and Pt redox replacement

Yaolun Yu; Yueping Hu; Xuewei Liu; Weiqiao Deng; Xin Wang

doi:10.1016/j.electacta.2008.12.004

The study of Pt@Au electrocatalyst based on Cu underpotential deposition and Pt redox replacement

Yaolun Yu, Yueping Hu, Xuewei Liu, Weiqiao Deng, Xin Wang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

107 Citations (Scopus)

Abstract

Electrochemical study of the decorated Pt@Au catalyst synthesized by Cu underpotential deposition (UPD)-Pt redox replacement technique has been conducted in this work. The parameters affecting the Cu UPD on Au/C nanoparticles in sulfuric acid electrolyte, including the UPD potential, deposition time and potential sweep rate, were investigated in detail. Anode stripping method was used to calculate the charge of the deposited Cu adlayers. Results showed that Pt@Au catalyst prepared by this UPD-redox replacement approach is not a core-shell structure but a decorated structure. A series of decorated Pt@Au/C catalysts with various Pt coverages were synthesized and examined for formic acid oxidation (FAO). It is found that the specific activity of Pt atoms increases with the decrease of Pt surface coverage on Au. Life test showed that better stability was pertained for this decorated Pt@Au/C catalyst compared to Pt/C towards FAO. © 2008 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	3092-3097
Journal	Electrochimica Acta
Volume	54
Issue number	11
DOIs	https://doi.org/10.1016/j.electacta.2008.12.004
Publication status	Published - 15 Apr 2009
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

Formic acid oxidation
Fuel cell electrocatalyst
Poly-crystalline gold
Pt redox replacement
Underpotential deposition

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title = "The study of Pt@Au electrocatalyst based on Cu underpotential deposition and Pt redox replacement",

abstract = "Electrochemical study of the decorated Pt@Au catalyst synthesized by Cu underpotential deposition (UPD)-Pt redox replacement technique has been conducted in this work. The parameters affecting the Cu UPD on Au/C nanoparticles in sulfuric acid electrolyte, including the UPD potential, deposition time and potential sweep rate, were investigated in detail. Anode stripping method was used to calculate the charge of the deposited Cu adlayers. Results showed that Pt@Au catalyst prepared by this UPD-redox replacement approach is not a core-shell structure but a decorated structure. A series of decorated Pt@Au/C catalysts with various Pt coverages were synthesized and examined for formic acid oxidation (FAO). It is found that the specific activity of Pt atoms increases with the decrease of Pt surface coverage on Au. Life test showed that better stability was pertained for this decorated Pt@Au/C catalyst compared to Pt/C towards FAO. {\textcopyright} 2008 Elsevier Ltd. All rights reserved.",

keywords = "Formic acid oxidation, Fuel cell electrocatalyst, Poly-crystalline gold, Pt redox replacement, Underpotential deposition",

author = "Yaolun Yu and Yueping Hu and Xuewei Liu and Weiqiao Deng and Xin Wang",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]. ",

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TY - JOUR

T1 - The study of Pt@Au electrocatalyst based on Cu underpotential deposition and Pt redox replacement

AU - Yu, Yaolun

AU - Hu, Yueping

AU - Liu, Xuewei

AU - Deng, Weiqiao

AU - Wang, Xin

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2009/4/15

Y1 - 2009/4/15

N2 - Electrochemical study of the decorated Pt@Au catalyst synthesized by Cu underpotential deposition (UPD)-Pt redox replacement technique has been conducted in this work. The parameters affecting the Cu UPD on Au/C nanoparticles in sulfuric acid electrolyte, including the UPD potential, deposition time and potential sweep rate, were investigated in detail. Anode stripping method was used to calculate the charge of the deposited Cu adlayers. Results showed that Pt@Au catalyst prepared by this UPD-redox replacement approach is not a core-shell structure but a decorated structure. A series of decorated Pt@Au/C catalysts with various Pt coverages were synthesized and examined for formic acid oxidation (FAO). It is found that the specific activity of Pt atoms increases with the decrease of Pt surface coverage on Au. Life test showed that better stability was pertained for this decorated Pt@Au/C catalyst compared to Pt/C towards FAO. © 2008 Elsevier Ltd. All rights reserved.

AB - Electrochemical study of the decorated Pt@Au catalyst synthesized by Cu underpotential deposition (UPD)-Pt redox replacement technique has been conducted in this work. The parameters affecting the Cu UPD on Au/C nanoparticles in sulfuric acid electrolyte, including the UPD potential, deposition time and potential sweep rate, were investigated in detail. Anode stripping method was used to calculate the charge of the deposited Cu adlayers. Results showed that Pt@Au catalyst prepared by this UPD-redox replacement approach is not a core-shell structure but a decorated structure. A series of decorated Pt@Au/C catalysts with various Pt coverages were synthesized and examined for formic acid oxidation (FAO). It is found that the specific activity of Pt atoms increases with the decrease of Pt surface coverage on Au. Life test showed that better stability was pertained for this decorated Pt@Au/C catalyst compared to Pt/C towards FAO. © 2008 Elsevier Ltd. All rights reserved.

KW - Formic acid oxidation

KW - Fuel cell electrocatalyst

KW - Poly-crystalline gold

KW - Pt redox replacement

KW - Underpotential deposition

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DO - 10.1016/j.electacta.2008.12.004

M3 - RGC 21 - Publication in refereed journal

SN - 0013-4686

VL - 54

SP - 3092

EP - 3097

JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 11

ER -

The study of Pt@Au electrocatalyst based on Cu underpotential deposition and Pt redox replacement

Abstract

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UN SDGs

Research Keywords

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