Electrochemical Properties of Compacts of Nano- and Microdisperse Diamond Powders in Aqueous Electrolytes

摘要

The electrochemical behavior of compacts of micro- and nanodisperse diamond powders were studied by using model redox K_3[Fe(CN)_6]–K_4[Fe(CN)_6] and Ce(SO_4)_2–Ce_2(SO_4)_3 systems in aqueous electrolytes. The current–voltage curves for compacts of microdisperse diamonds and the kinetics of reactions on these compacts in a solution of the [Fe(CN)_6]~(3–/4–) system are similar to those obtained by using a metal electrode. For nanodisperse diamonds, the same reactions are essentially irreversible.