Dopant-Assisted Control of the Crystallite Domain Size in Hollow Ternary Iridium Alloy Octahedral Nanocages toward the Oxygen Evolution Reaction

Taehyun Kwon; Minki Jun; Gi Joo Bang; Heesu Yang; Jinwhan Joo; Taekyung Kim; Jun Kim; Jong Min Kim; Hionsuck Baik; Yousung Jung; Jin Young Kim; Kwangyeol Lee

doi:10.1016/j.xcrp.2020.100260

Dopant-Assisted Control of the Crystallite Domain Size in Hollow Ternary Iridium Alloy Octahedral Nanocages toward the Oxygen Evolution Reaction

Taehyun Kwon, Minki Jun, Gi Joo Bang, Heesu Yang, Jinwhan Joo, Taekyung Kim, Jun Kim, Jong Min Kim, Hionsuck Baik, Yousung Jung, Jin Young Kim, Kwangyeol Lee

Department of Chemistry

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

16 Citations (Scopus)

Abstract

Kwon et al. demonstrate that the structural evolution of Ir-oxide nanocatalysts during OER depends on the crystallinity of the precursor Ir-alloy nanostructures. The loosely knit IrO₂@amorphous-IrO_x structure, derived from the polycrystalline ternary Ir-alloy nanocage, exhibits high OER activity as well as long-term stability.

Original language	English
Article number	100260
Journal	Cell Reports Physical Science
Volume	1
Issue number	12
DOIs	https://doi.org/10.1016/j.xcrp.2020.100260
Publication status	Published - 2020 Dec 23

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea , South Korea, grant no. NRF-2019R1A6A1A11044070 , NRF-2020R1A2B5B03002475 , and NRF-2019M3E6A1064709 . This work was also supported by the Korea Basic Science Institute (KBSI) under the R&D program (project no. C38350 ), supervised by the Ministry of Science. G.J.B. and Y.J. were supported by the NRF of Korea , grant no. NRF-2020M3E6A1044370 . Experiments at PLS-II were supported by MSICT and POSTECH . The authors also thank KBSI for the use of their HRTEM instruments. We thank Mr. Seokhee Lee from Korea University for his assistance in material synthesis, and Dr. Aram Oh from KBSI for his assistance in the HR-STEM measurements.

Publisher Copyright:
© 2020 The Author(s)

Keywords

crystallinity
doping
electrocatalyst
grain size
iridium-based alloy
nanocage
oxygen evolution reaction

ASJC Scopus subject areas

General Engineering
General Energy
General Physics and Astronomy
General Chemistry
General Materials Science

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10.1016/j.xcrp.2020.100260

Cite this

Kwon, T., Jun, M., Bang, G. J., Yang, H., Joo, J., Kim, T., Kim, J., Kim, J. M., Baik, H., Jung, Y., Kim, J. Y., & Lee, K. (2020). Dopant-Assisted Control of the Crystallite Domain Size in Hollow Ternary Iridium Alloy Octahedral Nanocages toward the Oxygen Evolution Reaction. Cell Reports Physical Science, 1(12), Article 100260. https://doi.org/10.1016/j.xcrp.2020.100260

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title = "Dopant-Assisted Control of the Crystallite Domain Size in Hollow Ternary Iridium Alloy Octahedral Nanocages toward the Oxygen Evolution Reaction",

abstract = "Kwon et al. demonstrate that the structural evolution of Ir-oxide nanocatalysts during OER depends on the crystallinity of the precursor Ir-alloy nanostructures. The loosely knit IrO2@amorphous-IrOx structure, derived from the polycrystalline ternary Ir-alloy nanocage, exhibits high OER activity as well as long-term stability.",

keywords = "crystallinity, doping, electrocatalyst, grain size, iridium-based alloy, nanocage, oxygen evolution reaction",

author = "Taehyun Kwon and Minki Jun and Bang, {Gi Joo} and Heesu Yang and Jinwhan Joo and Taekyung Kim and Jun Kim and Kim, {Jong Min} and Hionsuck Baik and Yousung Jung and Kim, {Jin Young} and Kwangyeol Lee",

note = "Funding Information: This work was supported by the National Research Foundation of Korea , South Korea, grant no. NRF-2019R1A6A1A11044070 , NRF-2020R1A2B5B03002475 , and NRF-2019M3E6A1064709 . This work was also supported by the Korea Basic Science Institute (KBSI) under the R&D program (project no. C38350 ), supervised by the Ministry of Science. G.J.B. and Y.J. were supported by the NRF of Korea , grant no. NRF-2020M3E6A1044370 . Experiments at PLS-II were supported by MSICT and POSTECH . The authors also thank KBSI for the use of their HRTEM instruments. We thank Mr. Seokhee Lee from Korea University for his assistance in material synthesis, and Dr. Aram Oh from KBSI for his assistance in the HR-STEM measurements. Publisher Copyright: {\textcopyright} 2020 The Author(s)",

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doi = "10.1016/j.xcrp.2020.100260",

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AU - Jun, Minki

AU - Bang, Gi Joo

AU - Yang, Heesu

AU - Joo, Jinwhan

AU - Kim, Taekyung

AU - Kim, Jun

AU - Kim, Jong Min

AU - Baik, Hionsuck

AU - Jung, Yousung

AU - Kim, Jin Young

AU - Lee, Kwangyeol

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PY - 2020/12/23

Y1 - 2020/12/23

N2 - Kwon et al. demonstrate that the structural evolution of Ir-oxide nanocatalysts during OER depends on the crystallinity of the precursor Ir-alloy nanostructures. The loosely knit IrO2@amorphous-IrOx structure, derived from the polycrystalline ternary Ir-alloy nanocage, exhibits high OER activity as well as long-term stability.

AB - Kwon et al. demonstrate that the structural evolution of Ir-oxide nanocatalysts during OER depends on the crystallinity of the precursor Ir-alloy nanostructures. The loosely knit IrO2@amorphous-IrOx structure, derived from the polycrystalline ternary Ir-alloy nanocage, exhibits high OER activity as well as long-term stability.

KW - crystallinity

KW - doping

KW - electrocatalyst

KW - grain size

KW - iridium-based alloy

KW - nanocage

KW - oxygen evolution reaction

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ER -

Dopant-Assisted Control of the Crystallite Domain Size in Hollow Ternary Iridium Alloy Octahedral Nanocages toward the Oxygen Evolution Reaction

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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