Publication: Fast method for calibrated self-discharge measurement of lithium-ion batteries including temperature effects and comparison to modelling

The team at the Keysight Technologies have recently published a new paper "Fast method for calibrated self-discharge measurement of lithium-ion batteries including temperature effects and comparison to modelling”. This paper presents an efficient and comprehensive method for measuring and understanding the self-discharge behaviour of LiB cells, considering factors such as temperature and cell to cell variability, as well as underlying electrochemical mechanisms. The research tackles several significant challenges. Firstly, it focuses on the precise measurement of microampere (µA) discharge currents from high-quality cells, a task previously deemed arduous. Secondly, it endeavours to reduce the time required for measurements, a factor that has hindered the development of efficient LiB cells. Additionally, the study looks into the temperature-dependent nature of self-discharge, shedding light on a critical aspect of battery performance optimization. Furthermore, the research delves into the determination of activation energy, a critical parameter for understanding and improving LiB cells. In addition, it offers a convincing demonstration of the applicability and generalization of Self-Discharge Mechanisms (SDM) in a variety of contexts. This research marks advancements in the field of battery technology, with far-reaching implications for industries reliant on LiB cells, such as electric vehicles, portable electronics, and renewable energy systems. The innovative approach presented in this paper aims to revolutionize the way we understand and engineer LiB cells, potentially leading to more efficient, longer-lasting, and sustainable energy storage solutions. Read the full paper here: