Gravimetric Electrochemical Voltage Spectroscopy: In Situ Mass Measurements during Electrochemical Doping of the Conducting Polymer Polypyrrole

摘要: A new technique is described for direct measurement of mass changes a conducting polymer electrode during electrochemical cycling. quartz microbalance used, with one its contacts serving as the working electrode. Its high sensitivity permits resolution less than 100 ng/${\mathrm{cm}}^{2}$. The results demonstrate that on reduction poly(pyrrole perchlorate), charge compensation achieved by diffusion lithium cation into and not perchlorate anion solution.