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

Masato Komoda, Isao Shitanda, Yoshinao Hoshi, Masayuki Itagaki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We developed an instantaneously usable screen-printed silver/silver sulfate (Ag/Ag2SO4)reference electrode with long-term stability. The reference electrode was composed of a Ag layer, a Ag/Ag2SO4 layer, an inner electrolyte layer, and a liquid junction layer printed successively on a polyimide substrate. The liquid junction and inner electrolyte layers were prepared using a silica gel–poly(vinylidene difluoride)ink. The open-circuit potentials in different electrolyte solutions were compared to that measured using a commercial reference electrode. The fabricated reference electrode stabilized the potential shift within 30 min and gave 437 mV vs. saturated KCl/Ag/AgCl measured in a 1 M KNO3 solution; the result was in good agreement with the theoretical value. Furthermore, the fabricated reference electrode remained stable for 20 days. This Ag/Ag2SO4 reference electrode showed potential for application in measurement systems where contamination by chloride ions is not desirable.

Original languageEnglish
Pages (from-to)133-137
Number of pages5
JournalElectrochemistry Communications
Volume103
DOIs
Publication statusPublished - Jun 2019
Externally publishedYes

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Keywords

  • Instantaneously usable
  • Long-term stable
  • Reference electrode
  • Screen-printing
  • Silver/silver sulfate

ASJC Scopus subject areas

  • Electrochemistry

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