Does temperature affect discharge capacity of lithium-ion batteries?

At present, most energy storage systems are still battery energy storage systems (BESS). However, the time-varying temperature condition has a significant impact on discharge capacity of lithium-ion batteries. When lithium-ion battery operates in a low temperature environment, the discharge capacity of the battery decreases.

Does low temperature affect battery charging performance?

To understand the charging performance changes of LIBs at low temperatures, we collected the data reported in the literature, as shown in Table 4, which lists the quantified capacity drop and the increased mid-point voltage (nominal and charging capacity) of different batteries under different conditions.

How does electrolyte design affect battery discharge capacity?

The design and development of the electrolyte can reduce the freezing point of the solvent, improve the ionic conductivity, and then, increase the capacity of the battery at low temperatures, which result in a considerable improvement in the discharge capacity of the LIBs at low temperatures [14, 16].

How does temperature affect lithium ion battery performance?

At low temperatures, the performance metrics of lithium-ion batteries, such as capacity, output power, and cycle life, deteriorate significantly. Studies indicate that in environments where temperatures fall below −40°C, battery capacity can plummet to 12 % of its nominal value .

How accurate are low-temperature battery models?

In addition to studying the performance of batteries at low temperatures, researchers have also investigated the low-temperature models of batteries. The accuracy of LIB models directly affects battery state estimation, performance prediction, safety warning, and other functions.

Does low temperature exposure affect battery degradation?

As the charge rate increased, the degradation also accelerated. For batteries without low temperature exposure (LTE), the degradation rate was found to be 4 % and 148 % higher when charged and discharged at 1C and 2C, respectively, compared to 0.5C.