Electrochemical investigation and modelling of LaNi4.77Al0.23 thin-films sputtered on glass wafers
Loading...
Authors
Khazaeli, Ali
Falahati, Hamid
Barz, Dominik P. J.
Date
2019-01-25
Type
journal article
Language
Keyword
(De)Hydrogenation model , Electrochemical characterization , Metal hydrides , Physical vapor deposition , Thin-film electrode
Alternative Title
Abstract
In the present work, we report on the microfabrication of metal hydride thin-film electrodes which can be utilized for rechargeable microbatteries or sensor applications. A multi-layer deposition technique is developed based on physical vapor deposition to fabricate the thin-film electrodes on a glass substrate. The morphology and the structure of the thin-film electrodes are studied by using Field Emission Scanning Electron Microscopy coupled with an Energy Dispersive Spectroscopy module. The surface composition of the thin-film electrodes are determined using X-ray Photoelectron Spectroscopy. Cyclic Voltammetry and galvanostatic charge-discharge measurements are performed to obtain insights into the electrochemical performance of the electrodes. Finally, a semi-empirical model is derived which allows for the determination of the equilibrium potential of the electrode as a function of its hydrogen content.
Description
Citation
Khazaeli, A., Falahati, H., & Barz, D. P. J. (2019). Electrochemical investigation and modelling of LaNi4.77Al0.23 thin-films sputtered on glass wafers. Journal of Alloys and Compounds, 772, 199–208. doi:10.1016/j.jallcom.2018.09.034
Publisher
Elsevier BV