Electrochemistry of powder material studied by means of the cavity microelectrode (CME)

• Published in: Electrochimica acta Vol. 47; no. 1; pp. 181 - 189
• Main Authors: Cachet-Vivier, C., Vivier, V., Cha, C.S., Nedelec, J.-Y., Yu, L.T.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 01.09.2001; Elsevier
• Subjects: Bi 2O 3; Carbon black; Cavity microelectrode; Chemistry; Electrochemistry; Electrochemistry of powder materials; Exact sciences and technology; General and physical chemistry; Kinetics and mechanism of reactions; Multilayer slab system; Polyaniline; PtO 2; PtO 2; Electrochemistry of powder materials; Carbon black; Bi 2O 3; Polyaniline; Multilayer slab system; Cavity microelectrode; Electrode configuration; Bismuth Oxides; Theoretical study; Experimental study; Powder; Electrodes; Conducting polymers; Cavity; Microelectrode; Models; Kinetics; Electrochemical reaction; Aniline polymer
• ISSN: 0013-4686; 1873-3859
• DOI: 10.1016/S0013-4686(01)00549-7

The kinetic aspects of powder material electrochemistry can be studied using the cavity microelectrode (CME) as it allows carrying out voltammetry at scan rates between a few millivolts per second to several hundreds of volts per second. Thus, significant voltammogram characteristics-scan rate profiles can be drawn. Theoretical models suited to each material needs to be developed for their exploitation. First, we report significant results obtained with CME on powder materials. The materials studied were chosen for their wide variety of possible applications such as battery materials (polyaniline or Bi 2O 3, which modifies the electrochemical behavior of materials in which it is included), supercapacitor (carbon black), and for the electrocatalytic hydrogenation of organic compounds (PtO 2). Secondly, we briefly describe the general action for establishing models to obtain a better understanding of the electrochemical processes.