Unraveling the role of introduced W in oxidation tolerance for Pt-based catalysts via on-line inductive coupled plasma-mass spectrometry

Man Ho Han; Young Jin Ko; Byoung Koun Min; Seung Ho Yu; Chang Hyuck Choi; Jae Young Choi; Woong Hee Lee; Hyung Suk Oh

doi:10.1016/j.elecom.2022.107301

Unraveling the role of introduced W in oxidation tolerance for Pt-based catalysts via on-line inductive coupled plasma-mass spectrometry

Man Ho Han, Young Jin Ko, Byoung Koun Min, Seung Ho Yu, Chang Hyuck Choi, Jae Young Choi, Woong Hee Lee, Hyung Suk Oh

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

Abstract

Water electrolysis cells and fuel cells have attracted considerable attention because they provide renewable and sustainable energy conversion and storage systems. Pt is the best catalyst for these two devices. However, cathodic Pt dissolution can occur after the oxidation of Pt, degrading the Pt catalyst. We report a PtW/C catalyst with high oxidation tolerance under repeated reverse-potential tests. The prepared PtW/C catalyst possesses higher oxidation tolerance than does the commercial Pt/C catalyst under repeated reverse-potential tests while showing comparable catalytic activity. From a combination of on-line inductively coupled plasma-mass spectrometry (ICP-MS) and ex-situ spectroscopy, we suggest that cathodic Pt dissolution is significantly inhibited because the introduced W suppresses the oxidation of Pt in PtW/C. However, W is dissolved in PtW/C rather than in Pt, indicating the need for further research. Our study demonstrates a new perspective for developing Pt-based catalysts with high oxidation tolerance by reducing cathodic Pt dissolution.

Original language	English
Article number	107301
Journal	Electrochemistry Communications
Volume	139
DOIs	https://doi.org/10.1016/j.elecom.2022.107301
Publication status	Published - 2022 Jun

Keywords

In-situ/Operando XAFS
On-line ICP-MS
Oxidation tolerance
Pt dissolution
Tungsten

ASJC Scopus subject areas

Electrochemistry

UN SDGs

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

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10.1016/j.elecom.2022.107301

Cite this

@article{09a400cac2784f7c84d0e62bac55d6bc,

title = "Unraveling the role of introduced W in oxidation tolerance for Pt-based catalysts via on-line inductive coupled plasma-mass spectrometry",

abstract = "Water electrolysis cells and fuel cells have attracted considerable attention because they provide renewable and sustainable energy conversion and storage systems. Pt is the best catalyst for these two devices. However, cathodic Pt dissolution can occur after the oxidation of Pt, degrading the Pt catalyst. We report a PtW/C catalyst with high oxidation tolerance under repeated reverse-potential tests. The prepared PtW/C catalyst possesses higher oxidation tolerance than does the commercial Pt/C catalyst under repeated reverse-potential tests while showing comparable catalytic activity. From a combination of on-line inductively coupled plasma-mass spectrometry (ICP-MS) and ex-situ spectroscopy, we suggest that cathodic Pt dissolution is significantly inhibited because the introduced W suppresses the oxidation of Pt in PtW/C. However, W is dissolved in PtW/C rather than in Pt, indicating the need for further research. Our study demonstrates a new perspective for developing Pt-based catalysts with high oxidation tolerance by reducing cathodic Pt dissolution.",

keywords = "In-situ/Operando XAFS, On-line ICP-MS, Oxidation tolerance, Pt dissolution, Tungsten",

author = "{Ho Han}, Man and Ko, {Young Jin} and {Koun Min}, Byoung and Yu, {Seung Ho} and {Hyuck Choi}, Chang and Choi, {Jae Young} and {Hee Lee}, Woong and Oh, {Hyung Suk}",

note = "Funding Information: This work was supported by institutional program grants from the Korea Institute of Science and Technology and “Carbon to X Project” (Project No. 2020M3H7A1098229) through the National Research Foundation (NRF) funded by the Ministry of Science and ICT, Republic of Korea. This research was also supported by the National Research Council of Science & Technology (NST) grant by the Korean government (MSIT) (No. CAP21011-100) and National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (NRF-2021R1A2C2093467). We also acknowledge Advanced Analysis Center at KIST for the TEM and 1D XRS KIST-PAL beamline for measuring the hard X-ray absorption spectroscopy (XAS). Publisher Copyright: {\textcopyright} 2022 The Author(s)",

year = "2022",

month = jun,

doi = "10.1016/j.elecom.2022.107301",

language = "English",

volume = "139",

journal = "Electrochemistry Communications",

issn = "1388-2481",

publisher = "Elsevier Inc.",

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TY - JOUR

T1 - Unraveling the role of introduced W in oxidation tolerance for Pt-based catalysts via on-line inductive coupled plasma-mass spectrometry

AU - Ho Han, Man

AU - Ko, Young Jin

AU - Koun Min, Byoung

AU - Yu, Seung Ho

AU - Hyuck Choi, Chang

AU - Choi, Jae Young

AU - Hee Lee, Woong

AU - Oh, Hyung Suk

N1 - Funding Information: This work was supported by institutional program grants from the Korea Institute of Science and Technology and “Carbon to X Project” (Project No. 2020M3H7A1098229) through the National Research Foundation (NRF) funded by the Ministry of Science and ICT, Republic of Korea. This research was also supported by the National Research Council of Science & Technology (NST) grant by the Korean government (MSIT) (No. CAP21011-100) and National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (NRF-2021R1A2C2093467). We also acknowledge Advanced Analysis Center at KIST for the TEM and 1D XRS KIST-PAL beamline for measuring the hard X-ray absorption spectroscopy (XAS). Publisher Copyright: © 2022 The Author(s)

PY - 2022/6

Y1 - 2022/6

N2 - Water electrolysis cells and fuel cells have attracted considerable attention because they provide renewable and sustainable energy conversion and storage systems. Pt is the best catalyst for these two devices. However, cathodic Pt dissolution can occur after the oxidation of Pt, degrading the Pt catalyst. We report a PtW/C catalyst with high oxidation tolerance under repeated reverse-potential tests. The prepared PtW/C catalyst possesses higher oxidation tolerance than does the commercial Pt/C catalyst under repeated reverse-potential tests while showing comparable catalytic activity. From a combination of on-line inductively coupled plasma-mass spectrometry (ICP-MS) and ex-situ spectroscopy, we suggest that cathodic Pt dissolution is significantly inhibited because the introduced W suppresses the oxidation of Pt in PtW/C. However, W is dissolved in PtW/C rather than in Pt, indicating the need for further research. Our study demonstrates a new perspective for developing Pt-based catalysts with high oxidation tolerance by reducing cathodic Pt dissolution.

AB - Water electrolysis cells and fuel cells have attracted considerable attention because they provide renewable and sustainable energy conversion and storage systems. Pt is the best catalyst for these two devices. However, cathodic Pt dissolution can occur after the oxidation of Pt, degrading the Pt catalyst. We report a PtW/C catalyst with high oxidation tolerance under repeated reverse-potential tests. The prepared PtW/C catalyst possesses higher oxidation tolerance than does the commercial Pt/C catalyst under repeated reverse-potential tests while showing comparable catalytic activity. From a combination of on-line inductively coupled plasma-mass spectrometry (ICP-MS) and ex-situ spectroscopy, we suggest that cathodic Pt dissolution is significantly inhibited because the introduced W suppresses the oxidation of Pt in PtW/C. However, W is dissolved in PtW/C rather than in Pt, indicating the need for further research. Our study demonstrates a new perspective for developing Pt-based catalysts with high oxidation tolerance by reducing cathodic Pt dissolution.

KW - In-situ/Operando XAFS

KW - On-line ICP-MS

KW - Oxidation tolerance

KW - Pt dissolution

KW - Tungsten

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U2 - 10.1016/j.elecom.2022.107301

DO - 10.1016/j.elecom.2022.107301

M3 - Article

AN - SCOPUS:85131044977

SN - 1388-2481

VL - 139

JO - Electrochemistry Communications

JF - Electrochemistry Communications

M1 - 107301

ER -

Unraveling the role of introduced W in oxidation tolerance for Pt-based catalysts via on-line inductive coupled plasma-mass spectrometry

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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