Effect of Graphene Modification on the Detection Performance of Ag/AgCl Electrode in Undersea Electric Field

doi:10.3969/j.issn.1000-1093.2019.12.018

Abstract

Abstract: The electro-chemical properties and detection performance of Ag/AgCl electrode made of grapheme are studied. The influences of addition of graphene and its content on the detection performance of Ag/AgCl electrodes are analyzed from microstructure characterization, electrode potential drifts, amplitude-frequency response, self-noise, polarization curves, water absorption and microstructure of Ag/AgCl electrode. The study shows that the graphene-Ag/AgCl electrode has small potential drift, short stability time, and good electrochemical properties compared to Ag/AgCl electrode, which is suitable for the rapidly deploying measurement. The different contents of graphenes have different mechanisms of action for changing the interface contact properties of Ag/AgCl electrodes/solution. The porosity of electrode and the specific surface area increase with the graphene content of 1%, and the surface uniformity of electrode is improved and the permeation of solution medium is accelerated with the graphene content of 3%. Different mechanisms of action are the main reason for the difference of electrochemical properties of Ag/AgCl electrodes with different contents of graphene. Key

Key words: graphene, Ag/AgClelectrode, potentialdrift, stabilitytime, scanningvibratingelectrodetechnique

CLC Number:

P738.3
O69

LI Hongxia, SONG Yusu, WANG Yexuan, CHEN Wenbo. Effect of Graphene Modification on the Detection Performance of Ag/AgCl Electrode in Undersea Electric Field[J]. Acta Armamentarii, 2019, 40(12): 2529-2536.

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第40卷
第12期2019 年12月兵工学报ACTA
ARMAMENTARIIVol.40No.12Dec.2019

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