An agar-based silver|silver chloride reference electrode for use in micro-electrochemistry

被引:149
作者
Hassel, AW [1 ]
Fushimi, K [1 ]
Seo, M [1 ]
机构
[1] Hokkaido Univ, Grad Sch Engn, Lab Interfacial Electrochem, Kita Ku, Sapporo, Hokkaido 0608628, Japan
基金
日本学术振兴会;
关键词
micro-reference electrodes; micro-electrochemistry; silver-silver chloride; scanning droplet cell;
D O I
10.1016/S1388-2481(99)00035-1
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
A miniaturised Ag \ AgCl reference electrode is described which can be easily set up. Its elechochemical behaviour was proven by micropolarisation curves, electrochemical impedance spectroscopy and potential transients. A saturated potassium chloride solution was used which was solidified by adding agar. The electrode is as small as 800 mu m in diameter and 5 mm in length, with further potential for down-sizing. A modified version includes an agar salt bridge in the same capillary. After an induction period of 6 h the potential becomes stable within 1 mV for more than 6 weeks. The electrode shows a slightly different reference potential, which is discussed in terms of the production process. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:180 / 183
页数:4
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