scholarly journals Screen-printed Paper-based Three-electrode System with Long-term Stable and Instantaneously Usable Reference Electrode

2018 ◽  
Vol 47 (12) ◽  
pp. 1502-1504 ◽  
Author(s):  
Isao Shitanda ◽  
Masato Komoda ◽  
Yoshinao Hoshi ◽  
Masayuki Itagaki
Keyword(s):  
Reference Electrode ◽  
Electrode System ◽  
Screen Printed

scholarly journals Instantaneously usable screen-printed silver/silver sulfate reference electrode with long-term stability

2019 ◽  
Vol 103 ◽  
pp. 133-137 ◽  
Author(s):  
Masato Komoda ◽  
Isao Shitanda ◽  
Yoshinao Hoshi ◽  
Masayuki Itagaki
Keyword(s):  
Reference Electrode ◽  
Term Stability ◽  
Long Term Stability ◽  
Silver Sulfate ◽  
Silver Silver ◽  
Screen Printed

An instantly usable paper-based screen-printed solid-state KCl/Ag/AgCl reference electrode with long-term stability

The Analyst ◽  
2015 ◽  
Vol 140 (19) ◽  
pp. 6481-6484 ◽  
Author(s):  
Isao Shitanda ◽  
Masato Komoda ◽  
Yoshinao Hoshi ◽  
Masayuki Itagaki
Keyword(s):  
Solid State ◽  
Reference Electrode ◽  
Cost Effective ◽  
Term Stability ◽  
Long Term Stability ◽  
Screen Printed

An instantly usable screen-printed paper-based Ag/AgCl electrode was fabricated for use as a cost-effective disposable reference electrode.

scholarly journals A screen-printed Ag/AgCl reference electrode with long-term stability for electroanalytical applications

2021 ◽  
pp. 139043
Author(s):  
Rebecca C Dawkins ◽  
Dingchen Wen ◽  
Judy N Hart ◽  
Mikko Vepsäläinen
Keyword(s):  
Reference Electrode ◽  
Term Stability ◽  
Long Term Stability ◽  
Screen Printed

Screen-Printed Three Electrode-Type Sticker Device with Long-Term Stable Liquid Junction-Type Reference Electrode

2020 ◽  
Vol MA2020-02 (68) ◽  
pp. 3563-3563
Author(s):  
Kaishi Miyazaki ◽  
Yoshinao Hoshi ◽  
Hikari Watanabe ◽  
Isao Shitanda ◽  
Masayuki Itagaki
Keyword(s):  
Reference Electrode ◽  
Liquid Junction ◽  
Junction Type ◽  
Screen Printed

scholarly journals Screen-Printed Three-Electrode-Type Sticker Device with Accurate Liquid Junction-Type Reference Electrode

2021 ◽  
Author(s):  
Isao Shitanda ◽  
Kaishi Miyazaki ◽  
Noya Loew ◽  
Ryosuke Esaka ◽  
Yoshinao Hoshi ◽  
...  
Keyword(s):  
Reference Electrode ◽  
Electrode System ◽  
Liquid Junction ◽  
Working Electrode ◽  
Junction Type ◽  
Screen Printed

We developed a novel sticker device that can convert any metal or alloy into the working electrode of a three-electrode system, enabling simple and accurate measurement. The sticker, containing a...

Facile and Fast Detection of Genistein in Derris scandens by Square Wave Voltammetry using a Cobalt(II) Phthalocyanine-Modified Screen-Printed Electrochemical Sensor

2020 ◽  
Vol 16 (3) ◽  
pp. 341-348
Author(s):  
Surinya Traipop ◽  
Suchada Chuanuwatanakul ◽  
Orawon Chailapakul ◽  
Eakkasit Punrat
Keyword(s):  
Electrochemical Sensor ◽  
Square Wave Voltammetry ◽  
Silver Chloride ◽  
Reference Electrode ◽  
High Sensitivity ◽  
Plastic Substrate ◽  
Fast Analysis ◽  
Square Wave ◽  
Wave Voltammetry ◽  
Screen Printed

Background: Recently, Derris scandens, a Thai herbal medicine with anti-inflammatory activity, is widely used as beverage and supplementary food. When the traditional medicine is a choice for health therapy, the simple and reliable equipment is required to control the suitable consuming amount of the active component. Objective: To develop the electrochemical sensor for genistein determination in Derris scandens with high sensitivity and rapid operation. Methods: An in-house screen-printed electrochemical sensor consisting of a three-electrode system was developed for genistein determination. A silver/silver chloride (Ag/AgCl) reference electrode, a carbon counter electrode and a carbon working electrode were prepared on a 0.3-mm-thick plastic substrate by the screen-printing technique using conductive ink. The dimensions of each sensor were 2.5×1.0 cm. Only 50 µL of sample solution was required on this device for the determination of genistein concentration by rapid response square wave voltammetry. Results: The oxidation peak of genistein appeared with good response in acidic media at a peak potential of 0.6 V. Moreover, the signal was enhanced by modifying the conductive carbon ink with cobalt( II) phthalocyanine. Under the optimized conditions, the linear range was found to be 2.5-150 µM and the detection limit was 1.5 µM. Moreover, the small volume extraction was successfully developed without any further pre-concentration. This proposed method was applied to determine genistein in Derris scandens with satisfying results. Conclusion: The proposed method is promising as an alternative method for genistein determination with facile and fast analysis.

The preparations of nanoporous carbon with multi-heteroatoms co-doping from black liquor powders for supercapacitors

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Pengfei Hao ◽  
Yanjie Yi ◽  
Youming Li ◽  
Yi Hou
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Black Liquor ◽  
Nanoporous Carbon ◽  
Electrode System ◽  
Industrial Wastes ◽  
Co Doping ◽  
Paper Making ◽  
Symmetric Supercapacitor

Abstract A green and economically viable route without any additional activation agents and templates has been developed to synthesize biomass-derived nanoporous carbon for superior electric double-layer capacitors via direct pyrolysis of dried black liquor powders, which is the main waste in pulping and paper-making industry. The resulting carbon materials present hierarchical porosity and moderate specific surface area of 1134  m 2 g − 1 {\text{m}^{2}}\hspace{0.1667em}{\text{g}^{-1}} , as well as multi-heteroatoms co-doping such as N, S, Na and K, which exist originally in black liquor. When evaluated as electrode materials for supercapacitors in 6 M KOH aqueous electrolyte, the-prepared carbon samples deliver a significantly high gravimetric capacitance of 331  F g − 1 \text{F}\hspace{0.1667em}{\text{g}^{-1}} at 0.5  A g − 1 \text{A}\hspace{0.1667em}{\text{g}^{-1}} in a three-electrode system. Moreover, the fabricated symmetric supercapacitor also possesses a gravimetric capacitance of 211  F g − 1 \text{F}\hspace{0.1667em}{\text{g}^{-1}} at 0.5  A g − 1 \text{A}\hspace{0.1667em}{\text{g}^{-1}} , with an impressive long-term cycling stability of 92 % capacitance retention after 3000 cycles. This work explores a suitable and scalable approach for mass production of high-performance electrode materials with industrial wastes on the base of cost-efficiency and environment-friendship.

scholarly journals Two Electrode ECG And EOG System For Monitoring Applications

2019 ◽  
Vol 8 (11) ◽  
pp. 262-265
Keyword(s):  
Reference Electrode ◽  
Cost Effective ◽  
Electrode System ◽  
Ecg Signal ◽  
Biomedical Signal ◽  
Ecg Signals ◽  
Arm Position ◽  
The Stability ◽  
Electrocardiogram Ecg ◽  
Total Gain

Heart and Eye are two vital organs in the human system. By knowing the Electrocardiogram (ECG) and Electro-oculogram (EOG), one will be able to tell the stability of the heart and eye respectively. In this project, we have developed a circuit to pick the ECG and EOG signal using two wet electrodes. Here no reference electrode is used. EOG and ECG signals have been acquired from ten healthy subjects. The ECG signal is obtained from two positions, namely wrist and arm position respectively. The picked-up biomedical signal is recorded and heart rate information is extracted from ECG signal using the biomedical workbench. The result found to be promising and acquired stable EOG and ECG signal from the subjects. The total gain required for the arm position is higher than the wrist position for the ECG signal. The total gain necessary for the EOG signal is higher than the ECG signal since the ECG signal is in the range of millivolts whereas EOG signal in the range of microvolts. This two-electrode system is stable, cost-effective and portable while still maintaining high common-mode rejection ratio (CMRR).

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