Experimental and mathematical modeling of mass transfer dynamics of hydrogen bubbles on textured electrodes during electrochemical water splitting

IF 8.1 2区 工程技术 Q1 CHEMISTRY, PHYSICAL Journal of Power Sources Pub Date : 2025-03-15 DOI:10.1016/j.jpowsour.2025.236630
Mohsen Saeidi , Kaivan Mohammadi , MahsaSadat Adel Rastkhiz , Mina Orouji , Mostafa Jamshidian , Stanislav A. Evlashin , Jing Bai , Abdolreza Simchi
{"title":"Experimental and mathematical modeling of mass transfer dynamics of hydrogen bubbles on textured electrodes during electrochemical water splitting","authors":"Mohsen Saeidi ,&nbsp;Kaivan Mohammadi ,&nbsp;MahsaSadat Adel Rastkhiz ,&nbsp;Mina Orouji ,&nbsp;Mostafa Jamshidian ,&nbsp;Stanislav A. Evlashin ,&nbsp;Jing Bai ,&nbsp;Abdolreza Simchi","doi":"10.1016/j.jpowsour.2025.236630","DOIUrl":null,"url":null,"abstract":"<div><div>The interplay between bubble release dynamics and surface wettability profoundly influences the performance of water dissociation systems; a topic not well understood. To systematically study the effect of electrode geometry and wettability, we have employed additive manufacturing to fabricate textured 316L-stainless steel electrodes composed of well-arranged pillars with different geometries and hydrophilicity. Through combined experimental and simulation approaches using bubbly flow models, we demonstrate that geometrically-induced wettability significantly affects hydrogen bubble dynamics, transitioning from gas-filled to liquid-filled states, and modulates bubble growth and detachment mechanisms. It is shown that the kinetics of bubble release and the surface coverage on hemispherical-topped pillars can finely be tuned to reduce the transport overpotential by 68.8 % and to increase the Faradaic efficiency (<span><math><mrow><mi>F</mi><mi>E</mi></mrow></math></span>) by 191.5 % at −300 mA cm<sup>−2</sup> relative to untextured electrodes. These findings delineate a pragmatic approach toward the design of textured electrodes for efficient gas-evolving reactions.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"640 ","pages":"Article 236630"},"PeriodicalIF":8.1000,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Power Sources","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378775325004665","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0

Abstract

The interplay between bubble release dynamics and surface wettability profoundly influences the performance of water dissociation systems; a topic not well understood. To systematically study the effect of electrode geometry and wettability, we have employed additive manufacturing to fabricate textured 316L-stainless steel electrodes composed of well-arranged pillars with different geometries and hydrophilicity. Through combined experimental and simulation approaches using bubbly flow models, we demonstrate that geometrically-induced wettability significantly affects hydrogen bubble dynamics, transitioning from gas-filled to liquid-filled states, and modulates bubble growth and detachment mechanisms. It is shown that the kinetics of bubble release and the surface coverage on hemispherical-topped pillars can finely be tuned to reduce the transport overpotential by 68.8 % and to increase the Faradaic efficiency (FE) by 191.5 % at −300 mA cm−2 relative to untextured electrodes. These findings delineate a pragmatic approach toward the design of textured electrodes for efficient gas-evolving reactions.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
求助全文
约1分钟内获得全文 去求助
来源期刊
Journal of Power Sources
Journal of Power Sources 工程技术-电化学
CiteScore
16.40
自引率
6.50%
发文量
1249
审稿时长
36 days
期刊介绍: The Journal of Power Sources is a publication catering to researchers and technologists interested in various aspects of the science, technology, and applications of electrochemical power sources. It covers original research and reviews on primary and secondary batteries, fuel cells, supercapacitors, and photo-electrochemical cells. Topics considered include the research, development and applications of nanomaterials and novel componentry for these devices. Examples of applications of these electrochemical power sources include: • Portable electronics • Electric and Hybrid Electric Vehicles • Uninterruptible Power Supply (UPS) systems • Storage of renewable energy • Satellites and deep space probes • Boats and ships, drones and aircrafts • Wearable energy storage systems
期刊最新文献
Preformation of Zn based layered double hydroxides on Zn powder solvent-free electrode for low temperature soft-package Zn-MnO2 battery The 3D Ru-doped nickel-cobalt phosphide nanosheet array with rough surface used as a high-performance electrocatalyst for benzyl alcohol-assisted energy-efficient hydrogen generation Impact of nitrogen doping on charge storage and self-discharge behaviour of zinc ion hybrid supercapacitor Experimental and mathematical modeling of mass transfer dynamics of hydrogen bubbles on textured electrodes during electrochemical water splitting Flash calcination breaks the mechanical and catalytical behavior trade-off of alkaline oxygen evolution reaction electrodes
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1