This part of IEC 62607 provides a standardized method for the determination of electrochemical properties of lithium ion battery cathode nanomaterials to enable customers to: a) decide whether or not a cathode nanomaterial is usable, and b) select a cathode nanomaterial suitable for their application. This technical specification includes: – definitions of terminology used in this part of IEC 62607, – recommendations for sample preparation, – outlines of the experimental procedures used to measure cathode nanomaterial properties, – methods of interpretation of results and discussion of data analysis, – case studies.