Comparing the Aging Characteristics of Quasi-Solid-State Lithium Batteries and Traditional Lithium Batteries

Quasi-solid-state battery plays a key role in promoting the transformation of liquid battery to all-solid-state battery, but the relevant experimental data and research are still insufficient. So, this digest chooses to focus on new quasi-solid-state batteries. The electrochemical impedance spectroscopy (EIS) is used to characterize commercial quasi-solid-state batteries and tradition liquid lithium batteries at different states of charge (SOC) and temperatures. Experimental results demonstrate that the liquid lithium battery has a cycle life of about 148 cycles, while a quasi-solid-state battery is up to about 623 cycles, more than twice as many as a liquid battery. Moreover, the charging time, dQ/dV curve, and EIS changing trend of two types of batteries are different.