Electrochemical Formation of Pb Microwires with Tunable Morphology on Liquid Metal Electrodes
Issued Date
2024-01-01
Resource Type
eISSN
24701343
Scopus ID
2-s2.0-85208403792
Journal Title
ACS Omega
Rights Holder(s)
SCOPUS
Bibliographic Citation
ACS Omega (2024)
Suggested Citation
Lertsathitphong P., Limpijumnong S., Somasundrum M., O’Mullane A.P., Lertanantawong B. Electrochemical Formation of Pb Microwires with Tunable Morphology on Liquid Metal Electrodes. ACS Omega (2024). doi:10.1021/acsomega.4c09165 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/102049
Title
Electrochemical Formation of Pb Microwires with Tunable Morphology on Liquid Metal Electrodes
Corresponding Author(s)
Other Contributor(s)
Abstract
Liquid metal electrodes based on Ga are an emerging area of interest given their fluid properties which can have significant impact on electrochemical processes. Here we study metal electrodeposition, namely lead electrodeposition on the liquid metal electrodes, gallium (Ga) and galinstan (GaInSn), which was performed in two different Pb2+ electrolytes (PbCl2 and Pb(NO3)2) to investigate any differences in the nature of the electrodeposit. Cyclic voltammetry and chronoamperometry were used to study the characteristics, kinetics, and nucleation and growth mechanisms of the electrodeposition process. Analysis of this electrochemical data, such as current density-time transients and diffusion coefficients under different potentials, revealed distinct behaviors for Pb deposition at each liquid metal and electrolyte, influencing the final morphology of the lead deposit. It was also found that the electrolyte concentration and deposition time were found to impact the morphology of the electrodeposited Pb. Scanning electron microscopy and energy dispersive X-ray spectroscopy revealed various types of Pb microstructures, including wire, branch-like, and flake-like formations, highlighting the differences in lead structural development when deposited on liquid gallium and Galinstan electrodes.