Characterization of Electrolyte Layer for Dissolved Oxygen Sensor

摘要: The aim of this study is to optimize the electrolyte recipe of the hydrogel for planar dissolved oxygen sensor. The electrolyte recipe was proposed with chemicals involved such as the PolyHEMA (Poly (2-hydroxyethyl methacrylate), 99% v/v 1, 4-dioxane and potassium chloride (KCl). The electrolytes were tested on the sensitivity towards the chloride ion activity, the thickness and diameter electrolyte and the water uptake rate. The 0.1 M KCl electrolyte is a good sensing material with good sensitivity of-55.83 mV/decade compare to the-59mV/decade. The electrolyte gives a low thickness, diameter and a low water uptake rate.