Surface conversion derived core-shell nanostructures of Co particles@RuCo alloy for superior hydrogen evolution in alkali and seawater

Huawei Huang; Hyeonjung Jung; Cheol Young Park; Seongbeen Kim; Ahryeon Lee; Hyunwoo Jun; Jaeryung Choi; Jeong Woo Han; Jinwoo Lee

doi:10.1016/j.apcatb.2022.121554

Surface conversion derived core-shell nanostructures of Co particles@RuCo alloy for superior hydrogen evolution in alkali and seawater

Huawei Huang, Hyeonjung Jung, Cheol Young Park, Seongbeen Kim, Ahryeon Lee, Hyunwoo Jun, Jaeryung Choi, Jeong Woo Han^*, Jinwoo Lee

^*Corresponding author for this work

Physical Sciences and Engineering

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

40 Scopus citations

Abstract

Hydrogen evolution reaction (HER) in alkali involves higher energy barriers and slow reaction kinetics due to involving water dissociation process. Catalysts with proper surface properties are highly needed to optimize the surface binding energy with reaction intermediates and enhance intrinsic catalytic activity. Herein, we present an effective strategy to construct a self-standing catalyst with core-shell structure, which is composited of metallic Co nanoparticles coated by RuCo alloy layer with optimized surface properties. The Ru attracts electrons from Co and optimizes the surface electronic structure. Theoretical calculations demonstrate that the water dissociation barrier on the Co surface is decreased from 0.65 eV to 0.58 eV after alloying with Ru. Experimental results reveal that the synthesized Co@RuCo-3 features highly efficient catalytic activity together with good stability at large current densities for HER in alkali, as well as in alkaline seawater and pure seawater.

Original language	English (US)
Article number	121554
Journal	Applied Catalysis B: Environmental
Volume	315
DOIs	https://doi.org/10.1016/j.apcatb.2022.121554
State	Published - Oct 15 2022

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation of Korea ( NRF ) grant funded by the Korea government ( MSIT ) ( 2019M3E6A1063671 , 2020R1A2C3004146 , and 2021M3D1A2051605 ). This work was also supported by Brain Pool Program through NRF funded by the Ministry of Science and ICT ( 2020H1D3A1A02081018 ).

Publisher Copyright:
© 2022 Elsevier B.V.

Keywords

Alloy
Cobalt
Core-shell
Electrocatalysis
Hydrogen evolution

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

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10.1016/j.apcatb.2022.121554

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title = "Surface conversion derived core-shell nanostructures of Co particles@RuCo alloy for superior hydrogen evolution in alkali and seawater",

abstract = "Hydrogen evolution reaction (HER) in alkali involves higher energy barriers and slow reaction kinetics due to involving water dissociation process. Catalysts with proper surface properties are highly needed to optimize the surface binding energy with reaction intermediates and enhance intrinsic catalytic activity. Herein, we present an effective strategy to construct a self-standing catalyst with core-shell structure, which is composited of metallic Co nanoparticles coated by RuCo alloy layer with optimized surface properties. The Ru attracts electrons from Co and optimizes the surface electronic structure. Theoretical calculations demonstrate that the water dissociation barrier on the Co surface is decreased from 0.65 eV to 0.58 eV after alloying with Ru. Experimental results reveal that the synthesized Co@RuCo-3 features highly efficient catalytic activity together with good stability at large current densities for HER in alkali, as well as in alkaline seawater and pure seawater.",

keywords = "Alloy, Cobalt, Core-shell, Electrocatalysis, Hydrogen evolution",

author = "Huawei Huang and Hyeonjung Jung and Park, {Cheol Young} and Seongbeen Kim and Ahryeon Lee and Hyunwoo Jun and Jaeryung Choi and Han, {Jeong Woo} and Jinwoo Lee",

note = "Funding Information: This research was supported by the National Research Foundation of Korea ( NRF ) grant funded by the Korea government ( MSIT ) ( 2019M3E6A1063671 , 2020R1A2C3004146 , and 2021M3D1A2051605 ). This work was also supported by Brain Pool Program through NRF funded by the Ministry of Science and ICT ( 2020H1D3A1A02081018 ). Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

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doi = "10.1016/j.apcatb.2022.121554",

language = "English (US)",

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T1 - Surface conversion derived core-shell nanostructures of Co particles@RuCo alloy for superior hydrogen evolution in alkali and seawater

AU - Huang, Huawei

AU - Jung, Hyeonjung

AU - Park, Cheol Young

AU - Kim, Seongbeen

AU - Lee, Ahryeon

AU - Jun, Hyunwoo

AU - Choi, Jaeryung

AU - Han, Jeong Woo

AU - Lee, Jinwoo

N1 - Funding Information: This research was supported by the National Research Foundation of Korea ( NRF ) grant funded by the Korea government ( MSIT ) ( 2019M3E6A1063671 , 2020R1A2C3004146 , and 2021M3D1A2051605 ). This work was also supported by Brain Pool Program through NRF funded by the Ministry of Science and ICT ( 2020H1D3A1A02081018 ). Publisher Copyright: © 2022 Elsevier B.V.

PY - 2022/10/15

Y1 - 2022/10/15

N2 - Hydrogen evolution reaction (HER) in alkali involves higher energy barriers and slow reaction kinetics due to involving water dissociation process. Catalysts with proper surface properties are highly needed to optimize the surface binding energy with reaction intermediates and enhance intrinsic catalytic activity. Herein, we present an effective strategy to construct a self-standing catalyst with core-shell structure, which is composited of metallic Co nanoparticles coated by RuCo alloy layer with optimized surface properties. The Ru attracts electrons from Co and optimizes the surface electronic structure. Theoretical calculations demonstrate that the water dissociation barrier on the Co surface is decreased from 0.65 eV to 0.58 eV after alloying with Ru. Experimental results reveal that the synthesized Co@RuCo-3 features highly efficient catalytic activity together with good stability at large current densities for HER in alkali, as well as in alkaline seawater and pure seawater.

AB - Hydrogen evolution reaction (HER) in alkali involves higher energy barriers and slow reaction kinetics due to involving water dissociation process. Catalysts with proper surface properties are highly needed to optimize the surface binding energy with reaction intermediates and enhance intrinsic catalytic activity. Herein, we present an effective strategy to construct a self-standing catalyst with core-shell structure, which is composited of metallic Co nanoparticles coated by RuCo alloy layer with optimized surface properties. The Ru attracts electrons from Co and optimizes the surface electronic structure. Theoretical calculations demonstrate that the water dissociation barrier on the Co surface is decreased from 0.65 eV to 0.58 eV after alloying with Ru. Experimental results reveal that the synthesized Co@RuCo-3 features highly efficient catalytic activity together with good stability at large current densities for HER in alkali, as well as in alkaline seawater and pure seawater.

KW - Alloy

KW - Cobalt

KW - Core-shell

KW - Electrocatalysis

KW - Hydrogen evolution

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Surface conversion derived core-shell nanostructures of Co particles@RuCo alloy for superior hydrogen evolution in alkali and seawater

Abstract

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Keywords

ASJC Scopus subject areas

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