step in which charge is transferred from one phase to the other.
PAC, 1980, 52, 233
(Electrode reaction orders, transfer coefficients and rate constants. Amplification of definitions and recommendations for publication of parameters)
on page 235
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook