Nucleation behavior and kinetics of single hydrogen nanobubble in ionic liquid system

Zongxu Wang; Zixin Li; Amado Velázquez-Palenzuela; Yinge Bai; Haifeng Dong; Lu Bai; Xiangping Zhang

doi:10.1016/j.ijhydene.2023.01.168

Nucleation behavior and kinetics of single hydrogen nanobubble in ionic liquid system

Zongxu Wang, Zixin Li, Amado Velázquez-Palenzuela, Yinge Bai, Haifeng Dong, Lu Bai^*, Xiangping Zhang^*

^*Corresponding author for this work

Chinese Academy of Sciences

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Bubbles generated on the electrode surface have been considered one of important factors limiting the efficiency of hydrogen evolution reaction (HER). However, the bubble formation behaviors have not been clearly defined, especially nanobubbles in ionic liquid system. In this work, single H₂ nanobubbles generation characters are well investigated using platinum nanoelectrodes in ionic liquid (IL) during HER. The crucial factors (i.e., critical condition, geometry, and nucleation rapid of the H₂ nanobubbles) are quantitatively conducted from the voltammograms. The results reveal that the H₂ nanobubbles have a small contact angle (from 152° to 160°) and large bubble height (0.5-1.1 nm), which are favorable for subsequent detachment from nanoelectrode surface. Moreover, higher nucleation energy (7.5-15.3 kT) indicates that IL can suppress bubble formation. This work has gained a fundamental insight into the dynamic formation behaviors of H₂ nanobubble in IL, which can guide us to study H₂ bubbles in the HER influenced by various factors.

Original language	English
Journal	International Journal of Hydrogen Energy
Volume	48
Issue number	43
Pages (from-to)	16198-16205
Number of pages	8
ISSN	0360-3199
DOIs	https://doi.org/10.1016/j.ijhydene.2023.01.168
Publication status	Published - 2023

Keywords

Ionic liquid
Nanobubble
Nucleation
Hydrogen evolution reaction
Pt nanoelectrode

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@article{2ee400ce8ca84c41b89c22abbc8624c5,

title = "Nucleation behavior and kinetics of single hydrogen nanobubble in ionic liquid system",

abstract = "Bubbles generated on the electrode surface have been considered one of important factors limiting the efficiency of hydrogen evolution reaction (HER). However, the bubble formation behaviors have not been clearly defined, especially nanobubbles in ionic liquid system. In this work, single H2 nanobubbles generation characters are well investigated using platinum nanoelectrodes in ionic liquid (IL) during HER. The crucial factors (i.e., critical condition, geometry, and nucleation rapid of the H2 nanobubbles) are quantitatively conducted from the voltammograms. The results reveal that the H2 nanobubbles have a small contact angle (from 152° to 160°) and large bubble height (0.5-1.1 nm), which are favorable for subsequent detachment from nanoelectrode surface. Moreover, higher nucleation energy (7.5-15.3 kT) indicates that IL can suppress bubble formation. This work has gained a fundamental insight into the dynamic formation behaviors of H2 nanobubble in IL, which can guide us to study H2 bubbles in the HER influenced by various factors.",

keywords = "Ionic liquid, Nanobubble, Nucleation, Hydrogen evolution reaction, Pt nanoelectrode",

author = "Zongxu Wang and Zixin Li and Amado Vel{\'a}zquez-Palenzuela and Yinge Bai and Haifeng Dong and Lu Bai and Xiangping Zhang",

year = "2023",

doi = "10.1016/j.ijhydene.2023.01.168",

language = "English",

volume = "48",

pages = "16198--16205",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier",

number = "43",

}

TY - JOUR

T1 - Nucleation behavior and kinetics of single hydrogen nanobubble in ionic liquid system

AU - Wang, Zongxu

AU - Li, Zixin

AU - Velázquez-Palenzuela, Amado

AU - Bai, Yinge

AU - Dong, Haifeng

AU - Bai, Lu

AU - Zhang, Xiangping

PY - 2023

Y1 - 2023

N2 - Bubbles generated on the electrode surface have been considered one of important factors limiting the efficiency of hydrogen evolution reaction (HER). However, the bubble formation behaviors have not been clearly defined, especially nanobubbles in ionic liquid system. In this work, single H2 nanobubbles generation characters are well investigated using platinum nanoelectrodes in ionic liquid (IL) during HER. The crucial factors (i.e., critical condition, geometry, and nucleation rapid of the H2 nanobubbles) are quantitatively conducted from the voltammograms. The results reveal that the H2 nanobubbles have a small contact angle (from 152° to 160°) and large bubble height (0.5-1.1 nm), which are favorable for subsequent detachment from nanoelectrode surface. Moreover, higher nucleation energy (7.5-15.3 kT) indicates that IL can suppress bubble formation. This work has gained a fundamental insight into the dynamic formation behaviors of H2 nanobubble in IL, which can guide us to study H2 bubbles in the HER influenced by various factors.

AB - Bubbles generated on the electrode surface have been considered one of important factors limiting the efficiency of hydrogen evolution reaction (HER). However, the bubble formation behaviors have not been clearly defined, especially nanobubbles in ionic liquid system. In this work, single H2 nanobubbles generation characters are well investigated using platinum nanoelectrodes in ionic liquid (IL) during HER. The crucial factors (i.e., critical condition, geometry, and nucleation rapid of the H2 nanobubbles) are quantitatively conducted from the voltammograms. The results reveal that the H2 nanobubbles have a small contact angle (from 152° to 160°) and large bubble height (0.5-1.1 nm), which are favorable for subsequent detachment from nanoelectrode surface. Moreover, higher nucleation energy (7.5-15.3 kT) indicates that IL can suppress bubble formation. This work has gained a fundamental insight into the dynamic formation behaviors of H2 nanobubble in IL, which can guide us to study H2 bubbles in the HER influenced by various factors.

KW - Ionic liquid

KW - Nanobubble

KW - Nucleation

KW - Hydrogen evolution reaction

KW - Pt nanoelectrode

U2 - 10.1016/j.ijhydene.2023.01.168

DO - 10.1016/j.ijhydene.2023.01.168

M3 - Journal article

SN - 0360-3199

VL - 48

SP - 16198

EP - 16205

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 43

ER -

Nucleation behavior and kinetics of single hydrogen nanobubble in ionic liquid system

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Keywords

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