Effect of Pt introduced on Ru-based electrocatalyst for oxygen evolution activity and stability

Jaekyung Yi; Woong Hee Lee; Chang Hyuck Choi; Yuri Lee; Kyung Su Park; Byoung Koun Min; Yun Jeong Hwang; Hyung Suk Oh

doi:10.1016/j.elecom.2019.05.018

Effect of Pt introduced on Ru-based electrocatalyst for oxygen evolution activity and stability

Jaekyung Yi, Woong Hee Lee, Chang Hyuck Choi, Yuri Lee, Kyung Su Park, Byoung Koun Min, Yun Jeong Hwang, Hyung Suk Oh

GREEN SCHOOL (Graduate School of Energy and Environment)

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

38 Citations (Scopus)

Abstract

Ru-based electrocatalysts are generally known to be suitable for the oxygen evolution reaction (OER), but they have intrinsic problems in balancing catalytic activity and stability. In this study, we took the strategy, introducing Pt atoms into the structure of crystalline RuO₂ to enhance the catalytic property toward OER while maintaining durability. The OER activity of Ru_0.9Pt_0.1O₂/C with high stability was significantly higher than that of RuO₂/C. In situ/operando ICP-MS analysis showed that Ru dissolution of Ru_0.9Pt_0.1O₂/C during OER was suppressed by introducing Pt and thermal treatment when compared to Ru/C. The XPS results after OER measurement indicated that the Ru oxidation state of Ru_0.9Pt_0.1O₂/C was higher than that of RuO₂, which led to high OER catalytic activity. Based on these results, we hypothesize that the enhanced OER activity of Ru_0.9Pt_0.1O₂/C was due to the change in the reaction mechanism from “adsorbate evolution” to “lattice participation”. Our findings increase the possibility of significantly overcoming the activity and stability limits of Ru-based electrocatalysts for the OER using Pt.

Original language	English
Article number	106469
Journal	Electrochemistry Communications
Volume	104
DOIs	https://doi.org/10.1016/j.elecom.2019.05.018
Publication status	Published - 2019 Jul

Keywords

Lattice participation mechanism
Oxygen evolution reaction
Ruthenium‑platinum oxide
Water splitting
in situ/operando ICP-MS

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.2019.05.018

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@article{eabcaac75b73488a9d4c640f158bd6cb,

title = "Effect of Pt introduced on Ru-based electrocatalyst for oxygen evolution activity and stability",

abstract = "Ru-based electrocatalysts are generally known to be suitable for the oxygen evolution reaction (OER), but they have intrinsic problems in balancing catalytic activity and stability. In this study, we took the strategy, introducing Pt atoms into the structure of crystalline RuO2 to enhance the catalytic property toward OER while maintaining durability. The OER activity of Ru0.9Pt0.1O2/C with high stability was significantly higher than that of RuO2/C. In situ/operando ICP-MS analysis showed that Ru dissolution of Ru0.9Pt0.1O2/C during OER was suppressed by introducing Pt and thermal treatment when compared to Ru/C. The XPS results after OER measurement indicated that the Ru oxidation state of Ru0.9Pt0.1O2/C was higher than that of RuO2, which led to high OER catalytic activity. Based on these results, we hypothesize that the enhanced OER activity of Ru0.9Pt0.1O2/C was due to the change in the reaction mechanism from “adsorbate evolution” to “lattice participation”. Our findings increase the possibility of significantly overcoming the activity and stability limits of Ru-based electrocatalysts for the OER using Pt.",

keywords = "Lattice participation mechanism, Oxygen evolution reaction, Ruthenium‑platinum oxide, Water splitting, in situ/operando ICP-MS",

author = "Jaekyung Yi and Lee, {Woong Hee} and Choi, {Chang Hyuck} and Yuri Lee and Park, {Kyung Su} and Min, {Byoung Koun} and Hwang, {Yun Jeong} and Oh, {Hyung Suk}",

note = "Funding Information: This work was supported by the Korea Institute of Science and Technology (KIST) institutional program and supported by the “Korea Center for Artificial Photosynthesis” (Project No. 2014M1A2A2070004 ) through the National Research Foundation (NRF) funded by the Ministry of Science and ICT, Republic of Korea. We acknowledge Advanced Analysis Center at KIST for the TEM and XPS measurements. Funding Information: This work was supported by the Korea Institute of Science and Technology (KIST) institutional program and supported by the “Korea Center for Artificial Photosynthesis” (Project No. 2014M1A2A2070004) through the National Research Foundation (NRF) funded by the Ministry of Science and ICT, Republic of Korea. We acknowledge Advanced Analysis Center at KIST for the TEM and XPS measurements. Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = jul,

doi = "10.1016/j.elecom.2019.05.018",

language = "English",

volume = "104",

journal = "Electrochemistry Communications",

issn = "1388-2481",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Effect of Pt introduced on Ru-based electrocatalyst for oxygen evolution activity and stability

AU - Yi, Jaekyung

AU - Lee, Woong Hee

AU - Choi, Chang Hyuck

AU - Lee, Yuri

AU - Park, Kyung Su

AU - Min, Byoung Koun

AU - Hwang, Yun Jeong

AU - Oh, Hyung Suk

N1 - Funding Information: This work was supported by the Korea Institute of Science and Technology (KIST) institutional program and supported by the “Korea Center for Artificial Photosynthesis” (Project No. 2014M1A2A2070004 ) through the National Research Foundation (NRF) funded by the Ministry of Science and ICT, Republic of Korea. We acknowledge Advanced Analysis Center at KIST for the TEM and XPS measurements. Funding Information: This work was supported by the Korea Institute of Science and Technology (KIST) institutional program and supported by the “Korea Center for Artificial Photosynthesis” (Project No. 2014M1A2A2070004) through the National Research Foundation (NRF) funded by the Ministry of Science and ICT, Republic of Korea. We acknowledge Advanced Analysis Center at KIST for the TEM and XPS measurements. Publisher Copyright: © 2019

PY - 2019/7

Y1 - 2019/7

N2 - Ru-based electrocatalysts are generally known to be suitable for the oxygen evolution reaction (OER), but they have intrinsic problems in balancing catalytic activity and stability. In this study, we took the strategy, introducing Pt atoms into the structure of crystalline RuO2 to enhance the catalytic property toward OER while maintaining durability. The OER activity of Ru0.9Pt0.1O2/C with high stability was significantly higher than that of RuO2/C. In situ/operando ICP-MS analysis showed that Ru dissolution of Ru0.9Pt0.1O2/C during OER was suppressed by introducing Pt and thermal treatment when compared to Ru/C. The XPS results after OER measurement indicated that the Ru oxidation state of Ru0.9Pt0.1O2/C was higher than that of RuO2, which led to high OER catalytic activity. Based on these results, we hypothesize that the enhanced OER activity of Ru0.9Pt0.1O2/C was due to the change in the reaction mechanism from “adsorbate evolution” to “lattice participation”. Our findings increase the possibility of significantly overcoming the activity and stability limits of Ru-based electrocatalysts for the OER using Pt.

AB - Ru-based electrocatalysts are generally known to be suitable for the oxygen evolution reaction (OER), but they have intrinsic problems in balancing catalytic activity and stability. In this study, we took the strategy, introducing Pt atoms into the structure of crystalline RuO2 to enhance the catalytic property toward OER while maintaining durability. The OER activity of Ru0.9Pt0.1O2/C with high stability was significantly higher than that of RuO2/C. In situ/operando ICP-MS analysis showed that Ru dissolution of Ru0.9Pt0.1O2/C during OER was suppressed by introducing Pt and thermal treatment when compared to Ru/C. The XPS results after OER measurement indicated that the Ru oxidation state of Ru0.9Pt0.1O2/C was higher than that of RuO2, which led to high OER catalytic activity. Based on these results, we hypothesize that the enhanced OER activity of Ru0.9Pt0.1O2/C was due to the change in the reaction mechanism from “adsorbate evolution” to “lattice participation”. Our findings increase the possibility of significantly overcoming the activity and stability limits of Ru-based electrocatalysts for the OER using Pt.

KW - Lattice participation mechanism

KW - Oxygen evolution reaction

KW - Ruthenium‑platinum oxide

KW - Water splitting

KW - in situ/operando ICP-MS

UR - http://www.scopus.com/inward/record.url?scp=85067385340&partnerID=8YFLogxK

U2 - 10.1016/j.elecom.2019.05.018

DO - 10.1016/j.elecom.2019.05.018

M3 - Article

AN - SCOPUS:85067385340

SN - 1388-2481

VL - 104

JO - Electrochemistry Communications

JF - Electrochemistry Communications

M1 - 106469

ER -

Effect of Pt introduced on Ru-based electrocatalyst for oxygen evolution activity and stability

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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