Is lithium-ion battery aging a threat to energy storage systems?

Lithium-ion battery aging represents a fundamental challenge affecting both performance degradation and safety risks in energy storage systems. This review presents a systematic examination of aging mechanisms, advanced characterization techniques, and state-of-the-art prediction methodologies.

Does battery aging affect battery safety?

The aging behavior of LIBs is a fundamental scientific issue related to battery safety. Currently, reviews on battery aging primarily focus on aging mechanisms, while reviews related to experimental characterization and prediction of battery aging remain limited.

What happens during the aging process of batteries?

During the aging process of batteries, internal materials undergo a series of changes: degradation of the structures of active materials in the electrodes, formation and growth of the solid electrolyte interphase (SEI), and decomposition of the electrolyte, etc. [, , ].

What reflects battery aging at high temperatures?

Studies have found that battery aging at high temperatures is mainly reflected in the cathode, while at low temperatures, it is mainly reflected in the anode . When LIBs undergo charging and discharging at high temperatures, an SEI film forms as a reaction with the cathode.

What challenges does battery aging face?

LIB aging faces two major challenges: the complexity of performance evolution and the limitation of measurable signals, posing significant technical challenges to battery management. 5.1.

Is battery aging irreversible?

Battery aging is an irreversible process, primarily manifested by a decrease in capacity and an increase in internal resistance. It is usually the result of the combined effects of multiple side reaction processes, related to various physical and chemical mechanisms, with very complex degradation mechanisms and aging forms.