Comparison of Electrochemical Motion Sensors With Platinum and Carbon Electrodes

Electrochemical motion sensors are widely used in the creation of seismology devices. The key element of an electrochemical motion sensor is a miniature electrochemical cell with platinum electrodes, the current, in which changes under the action of external mechanical signals. This work explores the possibility of replacing platinum with much cheaper carbon. Two types of configurations of the converting element have been studied, in one of which the electrodes are located on the walls of a narrow channel, in which liquid flows under the influence of an external signal. In the second configuration, electrodes are made on the sides of the plate, and microscopic holes are made in the plate to transfer fluid between the electrodes. Comparison of the sensitivity of sensors with platinum and carbon electrodes showed the similarity of their characteristics, provided that the electrode systems are similar in their geometry.