Preparation and performance of a solid-state thin-film Ag/AgCl quasi-reference electrode modified by chitosan-graphene

Xu, Kun; Xin, Yujie; Zhang, Xiliang; Tang, Yunqing; Wu, Chunxia

doi:10.1080/10667857.2020.1728059

Cited by 6 publications

(5 citation statements)

References 30 publications

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“…28 The stability of reference electrode.-In this section, electrodes with three different modification materials (Nafion, PDA and Nafion-PDA) and an Ag/AgCl electrode without modification, which was used as a comparison. The four electrodes were dipped in pH buffer solutions with pH 4.00, 6.86 and 9.18 for 1500 s 22,23 and the potential was recorded at 1 Hz.…”

Section: Resultsmentioning

confidence: 99%

“…The chlorinated electrodes were immersed in a saturated silver chloride solution for 4 h in dark environment to improve the stability of the reference potential. 23 Nafion was used as one of the 3 types of modification materials in this study. 15 μl of the 0.5 wt% Nafion solution, diluted by 5 wt% Nafion solution with anhydrous ethanol, was pipetted on the surface of the reference electrode.…”

Section: Methodsmentioning

confidence: 99%

“…21 Currently, the modification uses a protective layer made of various polymers, such as Nafion, deposited on the thin-film Ag/ AgCl reference electrode, which prevents AgCl dissolution. [22][23][24] Suzuki et al replaced the metal adhesive layer in the thin-film Ag/ AgCl reference electrode with a polyamide layer. The electrode presented a stable potential in saturated solutions of KCl and AgCl after 8 h, while the electrodes without polyamide layer can work only 1.5 min.…”

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confidence: 99%

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An All-Solid-State Ag/AgCl Reference Electrode Based on the Polydopamine Coating

Su¹,

Zhang²,

Chen³

et al. 2022

J. Electrochem. Soc.

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A solid thin film Ag/AgCl reference electrode modified by polydopamine (PDA) was developed in order to present a stable and fixed reference potential in solution. The reference electrode consists of a silver film, an AgCl layer and a PDA-modified film. The bare Ag/AgCl reference electrode, Nafion-modified Ag/AgCl reference electrode, PDA-modified Ag/AgCl reference electrode and Nafion-PDA-modified Ag/AgCl reference electrode were fabricated respectively. Sensitivity of these reference electrodes in KCl solution was measured, and the PDA-modified reference electrode had a sensitivity of 2.1 mV/pCl. The stability and reversibility were tested in different solutions in buffer and cyclic voltammetric characteristics were also investigated. The results showed that the reference electrode modified by PDA was stabled in PBS solution within a month, with a standard deviation of 1.4 mV. Response potential of the electrode modified by PDA always recovers to a relatively stable potential and the deviation is less than 5 mV in different pH buffer solutions. The PDA-modified reference electrode also showed minimal drift over 50 cyclic voltammetry tests compared to other reference electrodes. The reference electrode modified by PDA has good reproducibility, and the sensitivity of the sensor composed of the self-made electrode is close to that of the commercial reference electrode.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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An All-Solid-State Ag/AgCl Reference Electrode Based on the Polydopamine Coating

Su¹,

Zhang²,

Chen³

et al. 2022

J. Electrochem. Soc.

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“…This electrode captures the potential difference present in the seawater, transmuting it into an electrical signal which is subsequently subjected to post-processing and recording procedures. In comparison with alternative electrode types, the Ag/AgCl electrode presents distinct advantages such as heightened stability, facile preparation, and an extensive potential range [2][3][4] . Consequently, this electrode finds widespread utilization within the realm of oceanic electric field measurement.…”

Section: Introductionmentioning

confidence: 99%

Motion Error Mechanism Analysis and Simulation Verification of Ocean Electric Field Sensor

Liu,

Qiu,

Chen

et al. 2024

J. Phys.: Conf. Ser.

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The electric field measurement based on Unmanned Underwater Vehicle (UUV) can monitor and evaluate real-time electric field of underwater targets in motion, which has the ability to adapt to harsh marine environments. However, electric field sensors generate new errors during underwater motion, and there is still absence of studies on the error theory and simulation. To address this, the error generation mechanism of Ag/AgCl electrodes induced by the flow field was analyzed in this paper. A coupled mathematical model of flow-chemical-electric multi-physical field was established for the first time, and finite element simulation analysis was carried out. The results show that the change value of electrode surface potential under the influence of flow rate is basically in agreement with the empirical formulae. R-squared value of the two fits reaches up to 0.968, and RMSE value is less than 0.003, confirming the robustness of the model and simulations. The multi-physical field coupling model and simulation method proposed in this paper can provide theoretical and methodological support for the design of electric field sensors and motion error correction.

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“…15,16 Bare Ag/AgCl electrodes were proposed as quasi-REs in some applications as an alternative option to conventional REs. 13 However, their core Ag/AgCl reference elements are exposed, so they become unbalanced and quickly degrade. In the sense of true reference electrodes, some researchers went a little out of the traditional route of Ag/AgCl with a salt bridge and exploited the potential of redox couples or ionic liquids.…”

Section: Introductionmentioning

confidence: 99%

Development and comparison of various rod-shaped mini-reference electrode compositions based on Ag/AgCl for potentiometric applications

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Yıldırım

et al. 2022

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Preparation and performance of a solid-state thin-film Ag/AgCl quasi-reference electrode modified by chitosan-graphene

Cited by 6 publications

References 30 publications

An All-Solid-State Ag/AgCl Reference Electrode Based on the Polydopamine Coating

An All-Solid-State Ag/AgCl Reference Electrode Based on the Polydopamine Coating

Motion Error Mechanism Analysis and Simulation Verification of Ocean Electric Field Sensor

Development and comparison of various rod-shaped mini-reference electrode compositions based on Ag/AgCl for potentiometric applications

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