TY - JOUR
T1 - Ag-modified carbon fiber as a stable sensor
AU - Hu, Zhihui
AU - Xu, Jianmei
AU - Li, Wenhao
AU - Peng, Yedong
AU - Zhou, Wei
AU - Zhao, Ling
AU - Wang, Qing
N1 - Funding Information:
Zhihui Hu and Jianmei Xu conceived and wrote the project. Wenhao Li and Yedong Peng measured the sample performance. Wei Zhou and Ling Zhao analyzed the sample properties. Qing Wang commented and revised the manuscript. This work was supported by Department of Science and Technology, Hubei Provincial People's Government (The project name: Research on optical fiber detection and electric field sensing technology for oil and gas resources exploration).
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/10
Y1 - 2020/10
N2 - Carbon Fiber (CF) electrode has a wide range of applications as an electric field sensor. However, its use is limited because of its poor stability. In this paper, the CF was pretreated by thermal oxidation (400 °C, 1 h) to remove surface impurities, resulting in 2.3% mass reduction, which means the increase of effective specific surface area. XRD and EDS confirmed the nano-silver coating was chemically modified on the surface of CF by electroplating. Charging current density differences and Tafel slope showed 6.19 mF cm−2 and 77 mV dec−1, respectively, which implied outstanding electrochemical performance. As a sensor, the Ag-modified CF electrode-pair has small potential difference drift of 29 μV/24 h and excellent response property to low frequency electric field signal, along with lower AC impedance (1.42 Ω@1 Hz) and electrochemical self-noise (1.38 nV/rt (Hz)@1 Hz). The novel Ag-modified CF electrodes provided a potential choice for the design of high-sensitivity marine electric field sensor.
AB - Carbon Fiber (CF) electrode has a wide range of applications as an electric field sensor. However, its use is limited because of its poor stability. In this paper, the CF was pretreated by thermal oxidation (400 °C, 1 h) to remove surface impurities, resulting in 2.3% mass reduction, which means the increase of effective specific surface area. XRD and EDS confirmed the nano-silver coating was chemically modified on the surface of CF by electroplating. Charging current density differences and Tafel slope showed 6.19 mF cm−2 and 77 mV dec−1, respectively, which implied outstanding electrochemical performance. As a sensor, the Ag-modified CF electrode-pair has small potential difference drift of 29 μV/24 h and excellent response property to low frequency electric field signal, along with lower AC impedance (1.42 Ω@1 Hz) and electrochemical self-noise (1.38 nV/rt (Hz)@1 Hz). The novel Ag-modified CF electrodes provided a potential choice for the design of high-sensitivity marine electric field sensor.
UR - https://www.scopus.com/pages/publications/85087769081
UR - https://www.scopus.com/pages/publications/85087769081#tab=citedBy
U2 - 10.1016/j.compositesa.2020.106034
DO - 10.1016/j.compositesa.2020.106034
M3 - Article
AN - SCOPUS:85087769081
SN - 1359-835X
VL - 137
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
M1 - 106034
ER -