Immiscible bi-metal single-atoms driven synthesis of electrocatalysts having superb mass-activity and durability

Ahmad M. Harzandi; Sahar Shadman; Miran Ha; Chang Woo Myung; Dong Yeon Kim; Hyo Ju Park; Siraj Sultan; Woo Suk Noh; Wanggeun Lee; Pandiarajan Thangavel; Woo Jin Byun; Seong hun Lee; Jitendra N. Tiwari; Tae Joo Shin; Jae Hoon Park; Zonghoon Lee; Jae Sung Lee; Kwang S. Kim

doi:10.1016/j.apcatb.2020.118896

Immiscible bi-metal single-atoms driven synthesis of electrocatalysts having superb mass-activity and durability

Ahmad M. Harzandi
, Sahar Shadman
, Miran Ha
, Chang Woo Myung
, Dong Yeon Kim
, Hyo Ju Park
, Siraj Sultan
, Woo Suk Noh
, Wanggeun Lee
, Pandiarajan Thangavel
, Woo Jin Byun
, Seong hun Lee
, Jitendra N. Tiwari
, Tae Joo Shin
, Jae Hoon Park
, Zonghoon Lee
, Jae Sung Lee
, Kwang S. Kim

Department of Energy and Materials Engineering

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

128 Scopus citations

Abstract

Properties of metal elements can be modified by alloying. Given that catalytic efficiencies are often maximized using metal single-atoms (SAs), two immiscible metals can improve the catalytic activity when they can be present as non-agglomerated dual SAs. Here, we report yet-unexplored synthesis of high-performance electrocatalysts utilizing immiscibility of Cu/Ru bimetal atoms. In the synthesized electrocatalyst (Cu/Ru@G_N), both Cu-SAs and Ru-SAs are dispersed on N-doped graphitic-matrix (G_N), while other Cu-SAs are bridged to Ru nanoparticles (NPs) surface via nitrogen. It shows superior mass-activity with outstanding catalytic performance and durability for hydrogen evolution reaction (HER), outperforming commercial Pt_20wt%/C. Cu-SAs along with Ru-NPs enhance electric conduction or charge-transfer rate of G_N-templates for fast kinetics. Owing to Cu-Ru immiscibility, the coordination of Cu-SAs by N atoms which bridge to Ru-NPs surface, introduces new active sites and brings about long-term stability (over 600 h in acidic media) by preventing aggregation of Ru-NPs.

Original language	English
Article number	118896
Journal	Applied Catalysis B: Environmental
Volume	270
DOIs	https://doi.org/10.1016/j.apcatb.2020.118896
State	Published - 5 Aug 2020

Keywords

Charge transfer
Hydrogen evolution reaction
Immiscible bi-metals
Single-atoms

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10.1016/j.apcatb.2020.118896

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Harzandi, A. M., Shadman, S., Ha, M., Myung, C. W., Kim, D. Y., Park, H. J., Sultan, S., Noh, W. S., Lee, W., Thangavel, P., Byun, W. J., Lee, S. H., Tiwari, J. N., Shin, T. J., Park, J. H., Lee, Z., Lee, J. S., & Kim, K. S. (2020). Immiscible bi-metal single-atoms driven synthesis of electrocatalysts having superb mass-activity and durability. Applied Catalysis B: Environmental, 270, Article 118896. https://doi.org/10.1016/j.apcatb.2020.118896

@article{6f8f92271b36426d92e8bf6ccbaca448,

title = "Immiscible bi-metal single-atoms driven synthesis of electrocatalysts having superb mass-activity and durability",

abstract = "Properties of metal elements can be modified by alloying. Given that catalytic efficiencies are often maximized using metal single-atoms (SAs), two immiscible metals can improve the catalytic activity when they can be present as non-agglomerated dual SAs. Here, we report yet-unexplored synthesis of high-performance electrocatalysts utilizing immiscibility of Cu/Ru bimetal atoms. In the synthesized electrocatalyst (Cu/Ru@GN), both Cu-SAs and Ru-SAs are dispersed on N-doped graphitic-matrix (GN), while other Cu-SAs are bridged to Ru nanoparticles (NPs) surface via nitrogen. It shows superior mass-activity with outstanding catalytic performance and durability for hydrogen evolution reaction (HER), outperforming commercial Pt20wt\%/C. Cu-SAs along with Ru-NPs enhance electric conduction or charge-transfer rate of GN-templates for fast kinetics. Owing to Cu-Ru immiscibility, the coordination of Cu-SAs by N atoms which bridge to Ru-NPs surface, introduces new active sites and brings about long-term stability (over 600 h in acidic media) by preventing aggregation of Ru-NPs.",

keywords = "Charge transfer, Hydrogen evolution reaction, Immiscible bi-metals, Single-atoms",

author = "Harzandi, \{Ahmad M.\} and Sahar Shadman and Miran Ha and Myung, \{Chang Woo\} and Kim, \{Dong Yeon\} and Park, \{Hyo Ju\} and Siraj Sultan and Noh, \{Woo Suk\} and Wanggeun Lee and Pandiarajan Thangavel and Byun, \{Woo Jin\} and Lee, \{Seong hun\} and Tiwari, \{Jitendra N.\} and Shin, \{Tae Joo\} and Park, \{Jae Hoon\} and Zonghoon Lee and Lee, \{Jae Sung\} and Kim, \{Kwang S.\}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = aug,

day = "5",

doi = "10.1016/j.apcatb.2020.118896",

language = "English",

volume = "270",

journal = "Applied Catalysis B: Environmental",

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Harzandi, AM, Shadman, S, Ha, M, Myung, CW, Kim, DY, Park, HJ, Sultan, S, Noh, WS, Lee, W, Thangavel, P, Byun, WJ, Lee, SH, Tiwari, JN, Shin, TJ, Park, JH, Lee, Z, Lee, JS & Kim, KS 2020, 'Immiscible bi-metal single-atoms driven synthesis of electrocatalysts having superb mass-activity and durability', Applied Catalysis B: Environmental, vol. 270, 118896. https://doi.org/10.1016/j.apcatb.2020.118896

TY - JOUR

T1 - Immiscible bi-metal single-atoms driven synthesis of electrocatalysts having superb mass-activity and durability

AU - Harzandi, Ahmad M.

AU - Shadman, Sahar

AU - Ha, Miran

AU - Myung, Chang Woo

AU - Kim, Dong Yeon

AU - Park, Hyo Ju

AU - Sultan, Siraj

AU - Noh, Woo Suk

AU - Lee, Wanggeun

AU - Thangavel, Pandiarajan

AU - Byun, Woo Jin

AU - Lee, Seong hun

AU - Tiwari, Jitendra N.

AU - Shin, Tae Joo

AU - Park, Jae Hoon

AU - Lee, Zonghoon

AU - Lee, Jae Sung

AU - Kim, Kwang S.

PY - 2020/8/5

Y1 - 2020/8/5

N2 - Properties of metal elements can be modified by alloying. Given that catalytic efficiencies are often maximized using metal single-atoms (SAs), two immiscible metals can improve the catalytic activity when they can be present as non-agglomerated dual SAs. Here, we report yet-unexplored synthesis of high-performance electrocatalysts utilizing immiscibility of Cu/Ru bimetal atoms. In the synthesized electrocatalyst (Cu/Ru@GN), both Cu-SAs and Ru-SAs are dispersed on N-doped graphitic-matrix (GN), while other Cu-SAs are bridged to Ru nanoparticles (NPs) surface via nitrogen. It shows superior mass-activity with outstanding catalytic performance and durability for hydrogen evolution reaction (HER), outperforming commercial Pt20wt%/C. Cu-SAs along with Ru-NPs enhance electric conduction or charge-transfer rate of GN-templates for fast kinetics. Owing to Cu-Ru immiscibility, the coordination of Cu-SAs by N atoms which bridge to Ru-NPs surface, introduces new active sites and brings about long-term stability (over 600 h in acidic media) by preventing aggregation of Ru-NPs.

AB - Properties of metal elements can be modified by alloying. Given that catalytic efficiencies are often maximized using metal single-atoms (SAs), two immiscible metals can improve the catalytic activity when they can be present as non-agglomerated dual SAs. Here, we report yet-unexplored synthesis of high-performance electrocatalysts utilizing immiscibility of Cu/Ru bimetal atoms. In the synthesized electrocatalyst (Cu/Ru@GN), both Cu-SAs and Ru-SAs are dispersed on N-doped graphitic-matrix (GN), while other Cu-SAs are bridged to Ru nanoparticles (NPs) surface via nitrogen. It shows superior mass-activity with outstanding catalytic performance and durability for hydrogen evolution reaction (HER), outperforming commercial Pt20wt%/C. Cu-SAs along with Ru-NPs enhance electric conduction or charge-transfer rate of GN-templates for fast kinetics. Owing to Cu-Ru immiscibility, the coordination of Cu-SAs by N atoms which bridge to Ru-NPs surface, introduces new active sites and brings about long-term stability (over 600 h in acidic media) by preventing aggregation of Ru-NPs.

KW - Charge transfer

KW - Hydrogen evolution reaction

KW - Immiscible bi-metals

KW - Single-atoms

UR - https://www.scopus.com/pages/publications/85081974733

U2 - 10.1016/j.apcatb.2020.118896

DO - 10.1016/j.apcatb.2020.118896

M3 - Article

AN - SCOPUS:85081974733

SN - 0926-3373

VL - 270

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

M1 - 118896

ER -

Immiscible bi-metal single-atoms driven synthesis of electrocatalysts having superb mass-activity and durability

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Keywords

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