Effect of Ag/AgCl Paste Composition on the Performance of Screen-Printed Flexible Ag/AgCl Biomedical Electrodes
Wei Li, Qingyue Luo, Danlei Jing, Yongqing Hu, Hu Sun, Xianglei Yu, Bowen Yang, Zikai Xiong, Jiqiang Gao, Junpeng Li
TL;DR
This paper studies how the composition of Ag/AgCl paste affects the performance of flexible biomedical electrodes used for electrocardiogram detection.
Contribution
The study introduces a new method for optimizing Ag/AgCl paste composition to enhance electrode performance and reduce cost.
Findings
High specific surface area sheet-like silver powder H with a 5:5 Ag:AgCl ratio produced the best electrode performance.
The optimized electrode showed lower resistivity and impedance than commercial alternatives.
The electrode successfully collected stable and clear electrocardiogram signals.
Abstract
This study focused on the flexible Ag/AgCl biomedical electrode fabricated by screen printing. It systematically investigated the influence of the Ag/AgCl paste on its performance. By adjusting the type of silver powder and the mass ratio of Ag to AgCl, multiple groups of Ag/AgCl pastes were prepared, and their conductivity, microstructure, electrochemical properties, and mechanical stability were systematically characterized. The research results indicated that the specific surface area of the silver powder and the ratio of Ag to AgCl significantly affected the resistivity of the paste and the interface structure of the electrode. When using high specific surface area sheet-like silver powder H and an Ag:AgCl ratio of 5:5, the prepared electrode exhibited the best comprehensive performance: a lower resistivity (2.16 × 10−7 Ω·m), stable open-circuit voltage, good redox reversibility,…
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Taxonomy
TopicsNanomaterials and Printing Technologies · Advanced Sensor and Energy Harvesting Materials · Electrochemical sensors and biosensors