Fabrication and characterization of a fully screen-printed Ag/AgCl reference electrode using silica gel inks exhibiting instantaneous usability and long-term stability

Masato Komoda, Isao Shitanda, Yoshinao Hoshi, Masayuki Itagaki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

An instantly usable screen-printed Ag/AgCl electrode with long-term stability was fabricated for use as a cost-effective disposable reference electrode. A new silica gel–poly(vinylidene difluoride) ink was prepared to form the hydrophilic liquid junction and electrolyte layer of a planar-type reference electrode and the temporal evolution of its open-circuit potential in different electrolyte solutions was subsequently compared to that of a commercial reference electrode. The potential stabilized within 3 min and remained constant over 20 days. The impedance of the liquid junction was ~2500 Ω, which is close to the value observed for a commercial reference electrode. These results implied that the as-fabricated reference electrode was well-suited for practical measurements.

Original languageEnglish
Pages (from-to)65-69
Number of pages5
JournalElectrochemistry
Volume87
Issue number1
DOIs
Publication statusPublished - Jan 5 2019
Externally publishedYes

Keywords

  • Long-term Stability
  • Planar-type
  • Reference Electrode
  • Screen-printing

ASJC Scopus subject areas

  • Electrochemistry

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