Next Article in Journal
MHD Thin Film Flow and Thermal Analysis of Blood with CNTs Nanofluid
Previous Article in Journal
Multifunctional Gelcoats for Fiber Reinforced Composites
Article Menu

Export Article

Open AccessArticle
Coatings 2019, 9(3), 174; https://doi.org/10.3390/coatings9030174

Physical and Electrochemical Performances of Cold Sprayed Pb Electrodes

1
Science and Technology on Marine Corrosion and Protection Laboratory, Luoyang Ship Material Research Institute, Qingdao 266237, China
2
Qingdao No. 9 High School (Qingdao Foreign Language School), Qingdao 266000, China
3
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
*
Author to whom correspondence should be addressed.
Received: 16 February 2019 / Revised: 1 March 2019 / Accepted: 4 March 2019 / Published: 6 March 2019
(This article belongs to the Special Issue Cold Spraying: Recent Trends and Future Views)
Full-Text   |   PDF [4190 KB, uploaded 6 March 2019]   |  

Abstract

Titanium-based PbO2 electrodes are widely used for chemical industries, such as electrodialysis, electrolysis, and electrodepositing, to improve the mechanical and life cycle properties of Pb metal electrodes. However, PbO2 electrodes are usually electrodeposited onto rigid metals due to its soft characteristic, which results in severe passivation problems requiring thin thickness and high porosity. It is of great importance to develop a rigid Pb metal electrode system since thermal spraying and welding methods fail to manufacture such a promising electrode. In the present work, the cold spraying method was used to deposit a pure Pb metal coating with thickness of above 500 μm on Q235 steel substrate. The coating has good physical performances, the porosity is less than 1%, and the bonding strength ranges from 6.25 to 7.75 MPa. The cross-sectional morphology suggests that no through-thickness pores exist in the coating. The oxygen evolution potential is larger than 1.5 V vs. SCE, which is similar to the potential of the titanium-based PbO2 electrode. Dynamic polarization curves and cyclic voltammetry curves of coated sample in sodium sulfate solution indicate that cold sprayed Pb coating is a good electrode for electrochemical reduction reactions. All our results mean that cold spraying is capable of manufacturing electrode materials for electrochemical industries. View Full-Text
Keywords: Pb; cold spray; electrode; roughness; bonding strength; deformation Pb; cold spray; electrode; roughness; bonding strength; deformation
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Huang, G.; Zhuang, Y.; Fu, W. Physical and Electrochemical Performances of Cold Sprayed Pb Electrodes. Coatings 2019, 9, 174.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Coatings EISSN 2079-6412 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top