Interfacing RuO2with Pt to induce efficient charge transfer from Pt to RuO2for highly efficient and stable oxygen evolution in acidic media

Taehyun Kwon; Heesu Yang; Minki Jun; Taekyung Kim; Jinwhan Joo; Jun Kim; Hionsuck Baik; Jin Young Kim; Kwangyeol Lee

doi:10.1039/d1ta01587g

Interfacing RuO₂with Pt to induce efficient charge transfer from Pt to RuO₂for highly efficient and stable oxygen evolution in acidic media

Taehyun Kwon, Heesu Yang, Minki Jun, Taekyung Kim, Jinwhan Joo, Jun Kim, Hionsuck Baik, Jin Young Kim, Kwangyeol Lee

Department of Chemistry

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

12 Citations (Scopus)

Abstract

The oxygen evolution reaction (OER) requires a large overpotential which undermines the stability of electrocatalysts, typically IrO_xor RuO_x. RuO_xis particularly vulnerable to high overpotential in acidic media, due to the formation of soluble species, thus making it nearly impossible to be used as a commercially viable OER electrocatalyst. Herein, we demonstrate that the charge transfer from Pt to conjoined RuO₂dramatically stabilizes the RuO₂phase against overoxidation, the main culprit of disintegration of RuO₂. In this work, we compared the OER performance of three different types of Au@Pt@RuO_xnanowires, namely, hetero-interfaced, gradient-alloy, and conformal-shell type, with varying degrees of interaction between Pt and RuO₂. Among the studied samples, the hetero-interfaced type exhibited the highest OER mass activity of 1.311 A mg_Ru⁻¹at 1.48 V_RHEand maintained its activity durably, thus demonstrating the effectiveness of charge transfer from Pt to RuO₂in the hetero-interfaced structure against overoxidation of RuO₂

Original language	English
Pages (from-to)	14352-14362
Number of pages	11
Journal	Journal of Materials Chemistry A
Volume	9
Issue number	25
DOIs	https://doi.org/10.1039/d1ta01587g
Publication status	Published - 2021 Jul 7

ASJC Scopus subject areas

Chemistry(all)
Renewable Energy, Sustainability and the Environment
Materials Science(all)

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

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10.1039/d1ta01587g

Cite this

@article{3fd15d24f67a4ae19446093c0afcf8b0,

title = "Interfacing RuO2with Pt to induce efficient charge transfer from Pt to RuO2for highly efficient and stable oxygen evolution in acidic media",

abstract = "The oxygen evolution reaction (OER) requires a large overpotential which undermines the stability of electrocatalysts, typically IrOxor RuOx. RuOxis particularly vulnerable to high overpotential in acidic media, due to the formation of soluble species, thus making it nearly impossible to be used as a commercially viable OER electrocatalyst. Herein, we demonstrate that the charge transfer from Pt to conjoined RuO2dramatically stabilizes the RuO2phase against overoxidation, the main culprit of disintegration of RuO2. In this work, we compared the OER performance of three different types of Au@Pt@RuOxnanowires, namely, hetero-interfaced, gradient-alloy, and conformal-shell type, with varying degrees of interaction between Pt and RuO2. Among the studied samples, the hetero-interfaced type exhibited the highest OER mass activity of 1.311 A mgRu−1at 1.48 VRHEand maintained its activity durably, thus demonstrating the effectiveness of charge transfer from Pt to RuO2in the hetero-interfaced structure against overoxidation of RuO2",

author = "Taehyun Kwon and Heesu Yang and Minki Jun and Taekyung Kim and Jinwhan Joo and Jun Kim and Hionsuck Baik and Kim, {Jin Young} and Kwangyeol Lee",

note = "Funding Information: This work was supported by National Research Foundation (NRF) of Korea, Grant No. NRF-2019R1A6A1A11044070, NRF-2019M3E5A1064709 and NRF-2020R1A2B5B03002475, and KBSI under R&D program (Project No. C38530) supervised by the Ministry of Science. Dr T. Kim acknowledges the NRF of Korea, Grant No. NRF-2020R1A6A3A01096557 and Korea University Grant. Experiments at PLS-II were supported by MSICT and POSTECH. The authors also thank KBSI Seoul Center and Busan Center for usage of their HRTEM and XPS instruments, respectively. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2021.",

year = "2021",

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doi = "10.1039/d1ta01587g",

language = "English",

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journal = "Journal of Materials Chemistry A",

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publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Interfacing RuO2with Pt to induce efficient charge transfer from Pt to RuO2for highly efficient and stable oxygen evolution in acidic media

AU - Kwon, Taehyun

AU - Yang, Heesu

AU - Jun, Minki

AU - Kim, Taekyung

AU - Joo, Jinwhan

AU - Kim, Jun

AU - Baik, Hionsuck

AU - Kim, Jin Young

AU - Lee, Kwangyeol

N1 - Funding Information: This work was supported by National Research Foundation (NRF) of Korea, Grant No. NRF-2019R1A6A1A11044070, NRF-2019M3E5A1064709 and NRF-2020R1A2B5B03002475, and KBSI under R&D program (Project No. C38530) supervised by the Ministry of Science. Dr T. Kim acknowledges the NRF of Korea, Grant No. NRF-2020R1A6A3A01096557 and Korea University Grant. Experiments at PLS-II were supported by MSICT and POSTECH. The authors also thank KBSI Seoul Center and Busan Center for usage of their HRTEM and XPS instruments, respectively. Publisher Copyright: © The Royal Society of Chemistry 2021.

PY - 2021/7/7

Y1 - 2021/7/7

N2 - The oxygen evolution reaction (OER) requires a large overpotential which undermines the stability of electrocatalysts, typically IrOxor RuOx. RuOxis particularly vulnerable to high overpotential in acidic media, due to the formation of soluble species, thus making it nearly impossible to be used as a commercially viable OER electrocatalyst. Herein, we demonstrate that the charge transfer from Pt to conjoined RuO2dramatically stabilizes the RuO2phase against overoxidation, the main culprit of disintegration of RuO2. In this work, we compared the OER performance of three different types of Au@Pt@RuOxnanowires, namely, hetero-interfaced, gradient-alloy, and conformal-shell type, with varying degrees of interaction between Pt and RuO2. Among the studied samples, the hetero-interfaced type exhibited the highest OER mass activity of 1.311 A mgRu−1at 1.48 VRHEand maintained its activity durably, thus demonstrating the effectiveness of charge transfer from Pt to RuO2in the hetero-interfaced structure against overoxidation of RuO2

AB - The oxygen evolution reaction (OER) requires a large overpotential which undermines the stability of electrocatalysts, typically IrOxor RuOx. RuOxis particularly vulnerable to high overpotential in acidic media, due to the formation of soluble species, thus making it nearly impossible to be used as a commercially viable OER electrocatalyst. Herein, we demonstrate that the charge transfer from Pt to conjoined RuO2dramatically stabilizes the RuO2phase against overoxidation, the main culprit of disintegration of RuO2. In this work, we compared the OER performance of three different types of Au@Pt@RuOxnanowires, namely, hetero-interfaced, gradient-alloy, and conformal-shell type, with varying degrees of interaction between Pt and RuO2. Among the studied samples, the hetero-interfaced type exhibited the highest OER mass activity of 1.311 A mgRu−1at 1.48 VRHEand maintained its activity durably, thus demonstrating the effectiveness of charge transfer from Pt to RuO2in the hetero-interfaced structure against overoxidation of RuO2

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DO - 10.1039/d1ta01587g

M3 - Article

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VL - 9

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