Electrical impedance performance of metal dry bioelectrode with different surface coatings

Liu, Wei, Zhou, Wei, Liu, Shaoyu, Zhang, Chenying, Huang, Shuaishuai, Li, Yaoyao and Hui, Kwan San ORCID: https://orcid.org/0000-0001-7089-7587 (2018) Electrical impedance performance of metal dry bioelectrode with different surface coatings. Sensors and Actuators A: Physical, 269. 515–523. ISSN 0924-4247

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To improve the electrical impedance performance of bioelectrodes, a novel metal dry bioelectrodes with different coating layers are developed with laser micromilling and electroplating technology. Based on the analysis of the coating layer on the bioelectrode surface, the effect of different coating layers on the electrical impedance performance of bioelectrodes is investigated. The results show that the silver content increases with electroplating time when the silver layer is coated on the bioelectrode surface. However, the decrease of silver layer weight is observed with much longer electroplating time, and the optimal electroplating time is 20 min. Compared with the uncoated bioelectrode, the bioelectrode coated with silver layer exhibits much lower impedance value and better impedance stability. Especially, when the silver-coated bioelectrode is subsequently coated with silver-silver chloride layer, the lowest impedance value and best impedance stability are obtained.

Item Type: Article
Uncontrolled Keywords: dry bioelectrode,laser micromilling,electroplating technology,silver layer,silver chloride layer
Faculty \ School: Faculty of Science > School of Mathematics
UEA Research Groups: Faculty of Science > Research Groups > Energy Materials Laboratory
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Depositing User: Pure Connector
Date Deposited: 08 Dec 2017 11:09
Last Modified: 22 Oct 2022 03:24
URI: https://ueaeprints.uea.ac.uk/id/eprint/65723
DOI: 10.1016/j.sna.2017.12.006


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