New catalysts for formic acid fuel cells

Milica Spasojevic-Savkovic, Zoran Kićanović, P. Spasojevic, Milentije Luković
{"title":"New catalysts for formic acid fuel cells","authors":"Milica Spasojevic-Savkovic, Zoran Kićanović, P. Spasojevic, Milentije Luković","doi":"10.2298/sjee2203387s","DOIUrl":null,"url":null,"abstract":"Thallium adatoms deposited at under-potentials have shown the catalytic effect during the electrooxidation of formic acid on platinum ruthenium alloys. At Pt/Ru with an optimal coverage degree with adatoms Tl, HCOOH is oxidized at nearly 180 mV more negative potential than at Pt/Ru electrodes. The catalytic effect of modified Pt/Ru electrodes is plausibly caused by interaction of the Tl adatoms, located at Pt atoms with OH species of adjacent Ru atoms. These interactions stabilize Ru-OH species and allows for their formation at more negative potentials than at the Pt/Ru electrodes. The Ru-OH species oxidize firmly bound intermediates COad and thus release the Pt atoms for the oxidation of subsequent HCOOH molecules. The catalytic effect is probably caused by the third-body effect.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Serbian Journal of Electrical Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2298/sjee2203387s","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0

Abstract

Thallium adatoms deposited at under-potentials have shown the catalytic effect during the electrooxidation of formic acid on platinum ruthenium alloys. At Pt/Ru with an optimal coverage degree with adatoms Tl, HCOOH is oxidized at nearly 180 mV more negative potential than at Pt/Ru electrodes. The catalytic effect of modified Pt/Ru electrodes is plausibly caused by interaction of the Tl adatoms, located at Pt atoms with OH species of adjacent Ru atoms. These interactions stabilize Ru-OH species and allows for their formation at more negative potentials than at the Pt/Ru electrodes. The Ru-OH species oxidize firmly bound intermediates COad and thus release the Pt atoms for the oxidation of subsequent HCOOH molecules. The catalytic effect is probably caused by the third-body effect.
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
甲酸燃料电池的新型催化剂
低电位下沉积的铊原子在甲酸对铂钌合金的电氧化过程中表现出催化作用。在与附原子Tl覆盖度最佳的Pt/Ru电极上,HCOOH的氧化电位比在Pt/Ru电极上高出近180 mV。修饰Pt/Ru电极的催化作用可能是由位于Pt原子上的Tl配原子与相邻Ru原子的OH原子相互作用引起的。这些相互作用稳定了钌- oh物质,并允许它们在比Pt/Ru电极更负的电位下形成。Ru-OH可以氧化结合牢固的中间产物COad,从而释放出Pt原子,用于氧化后续的HCOOH分子。催化作用可能是由第三体效应引起的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Serbian Journal of Electrical Engineering
Serbian Journal of Electrical Engineering Energy-Energy Engineering and Power Technology
CiteScore
1.30
自引率
0.00%
发文量
16
审稿时长
25 weeks
期刊介绍: The main aims of the Journal are to publish peer review papers giving results of the fundamental and applied research in the field of electrical engineering. The Journal covers a wide scope of problems in the following scientific fields: Applied and Theoretical Electromagnetics, Instrumentation and Measurement, Power Engineering, Power Systems, Electrical Machines, Electrical Drives, Electronics, Telecommunications, Computer Engineering, Automatic Control and Systems, Mechatronics, Electrical Materials, Information Technologies, Engineering Mathematics, etc.
期刊最新文献
Design of allpass-based IIR multi-notch filters with identical pole radiuses Expert system for FDI of dc motor faults using structured residuals design technique Snort ids system visualization interface for alert analysis Lung sound classification using wavelet transform and entropy to detect lung abnormality Denoising electrocardiogram signals using multiband filter and its implementation on FPGA
×
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