Redox cycling without reference electrodes.

Redox cycling without reference electrodes.
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无需参比电极的氧化还原循环。

DOI:
10.1039/c4an01287a
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发表时间:
2014
期刊:
The Analyst
影响因子:
--
通讯作者:
Lemay,SergeG
Lemay,SergeG
中科院分区:
--
文献类型:
--
作者:
Sarkar,Sahana;Mathwig,Klaus;Kang,Shuo;Nieuwenhuis,AbF;Lemay,SergeG

文献摘要

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参比电极是电化学测量中的关键部件,然而在小型化电化学传感器中实现可靠的参比电极仍然是一个挑战。在这里,我们从实验和理论上探索了一种基于氧化还原循环的替代方法,该方法完全消除了参比电极。我们表明,在溶液中的电位的变化所造成的缺乏参考可以定量地理解,并确定在微型化系统中的参考电极的情况下,精确测量的要求。
The reference electrode is a key component in electrochemical measurements, yet it remains a challenge to implement a reliable reference electrode in miniaturized electrochemical sensors. Here we explore experimentally and theoretically an alternative approach based on redox cycling which eliminates the reference electrode altogether. We show that shifts in the solution potential caused by the lack of reference can be understood quantitatively, and determine the requirements for accurate measurements in miniaturized systems in the absence of a reference electrode.