A guide to Li-ion battery research and development

In this application note from Metrohm AG, the main principles and techniques for studying the performance of batteries and battery materials are discussed. It is emphasized that high-quality instrumentation is essential for accurate and reliable measurements. Two main techniques for studying battery performance are constant current cycling and electrochemical impedance spectroscopy (EIS). Constant current cycling can provide information on coulombic efficiency, capacity, and potential characteristics of the battery. EIS measures the battery's internal resistance and helps understand its components and performance.