Recent Advances in D-C Relaxation Techniques for the Measurement of Kinetics of Fast Electrode Reactions

摘要

Recent advances in the d-c relaxation techniques have extended the range of applicability of these techniques to reactions one to three orders of magnitude faster than hitherto measurable. Some of this improvement is due to better instrumentation; however, the major part came from the use of computerized data evaluation. This data-evaluation method has several advantages over the graphical data-evaluation methods commonly used in the past. These advantages are presented with special reference to the measurement of kinetics of reactions in high-temperature molten salts. Galvanostatic techniques (single and double pulse), coulostatic techniques (charge impulse and current impulse), and potentiostatic techniques (single and double pulse) are discussed in detail, and their relative merits are described. In addition, different methods are discussed for the determination of the reliability of the results. The best method was found to be a statistical analysis coupled to computer curve-fitting data evaluation. (ERA citation 10:027737)