Nanotip-Induced Electric Field for Hydrogen Catalysis

Fei Xue; Chunyang Zhang; Hao Peng; Feng Liu; Xueli Yan; Qing Yao; Zhiwei Hu; Ting Shan Chan; Maochang Liu; Juntao Zhang; Yong Xu; Xiaoqing Huang

doi:10.1021/acs.nanolett.3c03845

Nanotip-Induced Electric Field for Hydrogen Catalysis

Fei Xue
, Chunyang Zhang
, Hao Peng
, Feng Liu
, Xueli Yan
, Qing Yao
, Zhiwei Hu
, Ting Shan Chan
, Maochang Liu
, Juntao Zhang
, Yong Xu
, Xiaoqing Huang

School of Energy and Power Engineering

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

36 Scopus citations

Abstract

Local electric field induced by the lightning-rod effect attracts great attention for regulating the local microenvironment and electronic properties of active sites. Nevertheless, local electric-field-assisted applications are mainly limited to metals with strong surface plasmonic resonance properties (e.g., Au, Ag, and Cu). Herein, we fabricate RuCu snow-like nanosheets (SNSs) with high-curvature nanotips for enhancing the hydrogen oxidation reaction (HOR) and hydrogen evolution reaction (HER). Theoretical simulations show that RuCu SNSs can induce a strong local electric field around the sharp nanotips, which favors the accumulation of OH^- for HOR and H⁺ for HER. Cu incorporation can modulate the binding strength of OH* and H*, leading to significantly enhanced HOR and HER performance. Impressively, the mass activity of RuCu SNSs for alkaline HOR is 31.3 times higher than that of RuCu nanocrystals without sharp tips. Besides, the required overpotential for reaching 10 mA cm^-2 during HER over RuCu SNSs is 14.0 mV.

Original language	English
Pages (from-to)	11827-11834
Number of pages	8
Journal	Nano Letters
Volume	23
Issue number	24
DOIs	https://doi.org/10.1021/acs.nanolett.3c03845
State	Published - 27 Dec 2023

Keywords

bifunctional hydrogen catalysis
finite element simulations
local electric field
RuCu snow-like nanosheets
tip effect

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10.1021/acs.nanolett.3c03845

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title = "Nanotip-Induced Electric Field for Hydrogen Catalysis",

abstract = "Local electric field induced by the lightning-rod effect attracts great attention for regulating the local microenvironment and electronic properties of active sites. Nevertheless, local electric-field-assisted applications are mainly limited to metals with strong surface plasmonic resonance properties (e.g., Au, Ag, and Cu). Herein, we fabricate RuCu snow-like nanosheets (SNSs) with high-curvature nanotips for enhancing the hydrogen oxidation reaction (HOR) and hydrogen evolution reaction (HER). Theoretical simulations show that RuCu SNSs can induce a strong local electric field around the sharp nanotips, which favors the accumulation of OH- for HOR and H+ for HER. Cu incorporation can modulate the binding strength of OH* and H*, leading to significantly enhanced HOR and HER performance. Impressively, the mass activity of RuCu SNSs for alkaline HOR is 31.3 times higher than that of RuCu nanocrystals without sharp tips. Besides, the required overpotential for reaching 10 mA cm-2 during HER over RuCu SNSs is 14.0 mV.",

keywords = "bifunctional hydrogen catalysis, finite element simulations, local electric field, RuCu snow-like nanosheets, tip effect",

author = "Fei Xue and Chunyang Zhang and Hao Peng and Feng Liu and Xueli Yan and Qing Yao and Zhiwei Hu and Chan, \{Ting Shan\} and Maochang Liu and Juntao Zhang and Yong Xu and Xiaoqing Huang",

note = "Publisher Copyright: {\textcopyright} 2023 American Chemical Society.",

year = "2023",

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doi = "10.1021/acs.nanolett.3c03845",

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TY - JOUR

T1 - Nanotip-Induced Electric Field for Hydrogen Catalysis

AU - Xue, Fei

AU - Zhang, Chunyang

AU - Peng, Hao

AU - Liu, Feng

AU - Yan, Xueli

AU - Yao, Qing

AU - Hu, Zhiwei

AU - Chan, Ting Shan

AU - Liu, Maochang

AU - Zhang, Juntao

AU - Xu, Yong

AU - Huang, Xiaoqing

PY - 2023/12/27

Y1 - 2023/12/27

N2 - Local electric field induced by the lightning-rod effect attracts great attention for regulating the local microenvironment and electronic properties of active sites. Nevertheless, local electric-field-assisted applications are mainly limited to metals with strong surface plasmonic resonance properties (e.g., Au, Ag, and Cu). Herein, we fabricate RuCu snow-like nanosheets (SNSs) with high-curvature nanotips for enhancing the hydrogen oxidation reaction (HOR) and hydrogen evolution reaction (HER). Theoretical simulations show that RuCu SNSs can induce a strong local electric field around the sharp nanotips, which favors the accumulation of OH- for HOR and H+ for HER. Cu incorporation can modulate the binding strength of OH* and H*, leading to significantly enhanced HOR and HER performance. Impressively, the mass activity of RuCu SNSs for alkaline HOR is 31.3 times higher than that of RuCu nanocrystals without sharp tips. Besides, the required overpotential for reaching 10 mA cm-2 during HER over RuCu SNSs is 14.0 mV.

AB - Local electric field induced by the lightning-rod effect attracts great attention for regulating the local microenvironment and electronic properties of active sites. Nevertheless, local electric-field-assisted applications are mainly limited to metals with strong surface plasmonic resonance properties (e.g., Au, Ag, and Cu). Herein, we fabricate RuCu snow-like nanosheets (SNSs) with high-curvature nanotips for enhancing the hydrogen oxidation reaction (HOR) and hydrogen evolution reaction (HER). Theoretical simulations show that RuCu SNSs can induce a strong local electric field around the sharp nanotips, which favors the accumulation of OH- for HOR and H+ for HER. Cu incorporation can modulate the binding strength of OH* and H*, leading to significantly enhanced HOR and HER performance. Impressively, the mass activity of RuCu SNSs for alkaline HOR is 31.3 times higher than that of RuCu nanocrystals without sharp tips. Besides, the required overpotential for reaching 10 mA cm-2 during HER over RuCu SNSs is 14.0 mV.

KW - bifunctional hydrogen catalysis

KW - finite element simulations

KW - local electric field

KW - RuCu snow-like nanosheets

KW - tip effect

UR - https://www.scopus.com/pages/publications/85180101322

U2 - 10.1021/acs.nanolett.3c03845

DO - 10.1021/acs.nanolett.3c03845

M3 - 文章

C2 - 38079388

AN - SCOPUS:85180101322

SN - 1530-6984

VL - 23

SP - 11827

EP - 11834

JO - Nano Letters

JF - Nano Letters

IS - 24

ER -

Nanotip-Induced Electric Field for Hydrogen Catalysis

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Keywords

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