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Title: Studying Corrosion Using Miniaturized Particle Attached Working Electrodes and the Nafion Membrane

Abstract

We developed a new approach to attach particles onto a conductive layer as a working electrode (WE) in a microfluidic electrochemical cell with three electrodes. Nafion, an efficient proton transfer molecule, is used to form a thin protection layer to secure particle electrodes. Spin coating is used to develop a thin and even layer of Nafion membrane. The effects of Nafion (5 wt% 20 wt%) and spinning rates were evaluated using multiple sets of replicates. The electrochemical performance of various devices was demonstrated. Additionally, the electrochemical performance of the devices is used to select and optimize fabrication conditions. The results show that a higher spinning rate and a lower Nafion concentration (5 wt%) induce a better performance, using cerium oxide (CeO2) particles as a testing model. The WE surfaces were characterized using atomic force microscopy (AFM), scanning electron microscopy-focused ion beam (SEM-FIB), time-of-flight secondary ion mass spectrometry (ToF-SIMS), and X-ray photoelectron spectroscopy (XPS). The comparison between the pristine and corroded WE surfaces shows that Nafion is redistributed after potential is applied. Our results verify that Nafion membrane offers a reliable means to secure particles onto electrodes. Furthermore, the electrochemical performance is reliable and reproducible. Thus, this approach provides a newmore » way to study more complex and challenging particles, such as uranium oxide, in the future.« less

Authors:
ORCiD logo; ORCiD logo; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1831535
Alternate Identifier(s):
OSTI ID: 1836022
Report Number(s):
PNNL-SA-167489
Journal ID: ISSN 2072-666X; PII: mi12111414
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Published Article
Journal Name:
Micromachines
Additional Journal Information:
Journal Name: Micromachines Journal Volume: 12 Journal Issue: 11; Journal ID: ISSN 2072-666X
Publisher:
MDPI AG
Country of Publication:
Switzerland
Language:
English
Subject:
42 ENGINEERING; nanoparticle; working electrode; microfluidic electrochemical cell; electrochemical analysis; particle attached electrode; Nafion membrane; System for Analysis at the Liquid-Vacuum Interface (SALVI); CeO2

Citation Formats

Son, Jiyoung, Buck, Edgar C., Riechers, Shawn L., Tripathi, Shalini, Strange, Lyndi E., Engelhard, Mark H., and Yu, Xiao-Ying. Studying Corrosion Using Miniaturized Particle Attached Working Electrodes and the Nafion Membrane. Switzerland: N. p., 2021. Web. doi:10.3390/mi12111414.
Son, Jiyoung, Buck, Edgar C., Riechers, Shawn L., Tripathi, Shalini, Strange, Lyndi E., Engelhard, Mark H., & Yu, Xiao-Ying. Studying Corrosion Using Miniaturized Particle Attached Working Electrodes and the Nafion Membrane. Switzerland. https://doi.org/10.3390/mi12111414
Son, Jiyoung, Buck, Edgar C., Riechers, Shawn L., Tripathi, Shalini, Strange, Lyndi E., Engelhard, Mark H., and Yu, Xiao-Ying. Thu . "Studying Corrosion Using Miniaturized Particle Attached Working Electrodes and the Nafion Membrane". Switzerland. https://doi.org/10.3390/mi12111414.
@article{osti_1831535,
title = {Studying Corrosion Using Miniaturized Particle Attached Working Electrodes and the Nafion Membrane},
author = {Son, Jiyoung and Buck, Edgar C. and Riechers, Shawn L. and Tripathi, Shalini and Strange, Lyndi E. and Engelhard, Mark H. and Yu, Xiao-Ying},
abstractNote = {We developed a new approach to attach particles onto a conductive layer as a working electrode (WE) in a microfluidic electrochemical cell with three electrodes. Nafion, an efficient proton transfer molecule, is used to form a thin protection layer to secure particle electrodes. Spin coating is used to develop a thin and even layer of Nafion membrane. The effects of Nafion (5 wt% 20 wt%) and spinning rates were evaluated using multiple sets of replicates. The electrochemical performance of various devices was demonstrated. Additionally, the electrochemical performance of the devices is used to select and optimize fabrication conditions. The results show that a higher spinning rate and a lower Nafion concentration (5 wt%) induce a better performance, using cerium oxide (CeO2) particles as a testing model. The WE surfaces were characterized using atomic force microscopy (AFM), scanning electron microscopy-focused ion beam (SEM-FIB), time-of-flight secondary ion mass spectrometry (ToF-SIMS), and X-ray photoelectron spectroscopy (XPS). The comparison between the pristine and corroded WE surfaces shows that Nafion is redistributed after potential is applied. Our results verify that Nafion membrane offers a reliable means to secure particles onto electrodes. Furthermore, the electrochemical performance is reliable and reproducible. Thus, this approach provides a new way to study more complex and challenging particles, such as uranium oxide, in the future.},
doi = {10.3390/mi12111414},
journal = {Micromachines},
number = 11,
volume = 12,
place = {Switzerland},
year = {2021},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.3390/mi12111414

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