TY - JOUR
T1 - Modified carbon fiber electrodes with enhanced impedance performance for marine sensor
AU - Hu, Zhihui
AU - Xu, Jianmei
AU - Dong, Jin
AU - Li, Wenhao
AU - Huang, Can
AU - Zhou, Wei
AU - Zhao, Ling
AU - Wang, Qing
N1 - Funding Information:
We are grateful to Dr Wang who provided language help, and to Miss Yang who typed the manuscript. We also greatly appreciate Prof. Xu's useful discussion.
Publisher Copyright:
© 2020 Taiwan Institute of Chemical Engineers
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/4
Y1 - 2020/4
N2 - At present, the use of carbon fiber electrodes as marine sensors for marine signal exploration has received much attention. AC impedance is the crucial factor affecting the performance of sensor. Unfortunately, the AC impedance performance of carbon fiber electrodes has been underappreciated up to date. In order to fully understand the influencing factors of AC impedance, the comprehensive and systematic study was carried out in terms of reference electrode type, encapsulated shell of electrode, immersion depth of electrode, obstacles between electrodes, electrode position, initial voltage electrolyte concentration and electrolyte type. Through analog equivalent circuits, the solution impedance R1, charge transfer impedance R2 and diffusion impedance W1 were found to be 1.485, 0.313 and 1.158 Ω, respectively. The smallest impedance of silver-plated carbon fiber electrodes is only 3.49 Ω at 1 Hz. Combined with different influencing factors, we can know that the modified carbon fiber electrodes performance was mainly controlled by diffusion and transfer processes. This study would contribute to the design and application of the silver-plated carbon fiber electrodes as marine electric field sensor.
AB - At present, the use of carbon fiber electrodes as marine sensors for marine signal exploration has received much attention. AC impedance is the crucial factor affecting the performance of sensor. Unfortunately, the AC impedance performance of carbon fiber electrodes has been underappreciated up to date. In order to fully understand the influencing factors of AC impedance, the comprehensive and systematic study was carried out in terms of reference electrode type, encapsulated shell of electrode, immersion depth of electrode, obstacles between electrodes, electrode position, initial voltage electrolyte concentration and electrolyte type. Through analog equivalent circuits, the solution impedance R1, charge transfer impedance R2 and diffusion impedance W1 were found to be 1.485, 0.313 and 1.158 Ω, respectively. The smallest impedance of silver-plated carbon fiber electrodes is only 3.49 Ω at 1 Hz. Combined with different influencing factors, we can know that the modified carbon fiber electrodes performance was mainly controlled by diffusion and transfer processes. This study would contribute to the design and application of the silver-plated carbon fiber electrodes as marine electric field sensor.
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U2 - 10.1016/j.jtice.2020.02.016
DO - 10.1016/j.jtice.2020.02.016
M3 - Article
AN - SCOPUS:85081247610
VL - 109
SP - 137
EP - 144
JO - Journal of the Taiwan Institute of Chemical Engineers
JF - Journal of the Taiwan Institute of Chemical Engineers
SN - 1876-1070
ER -