When the temperature drops, the chemical reactions required to generate energy become slower and less efficient, causing a decrease in the capacity and discharge rate of the battery.
Until now, much work has been done to probe the influence of low temperature on LIBs. 6–12 Ling et al.6 cycled batteries under ambient temperatures of −10 and 5 °C, respectively; their results showed that the low temperature environment harmed the battery performance, reducing the discharging voltage and accelerating the capacity decay.
Does low temperature affect the performance of lithium-ion batteries?
In the current work, a series of experiments were carried out under low and normal temperature conditions (0 and 20 °C) to research the influence of low temperature on the performance of lithium-ion batteries (LIBs). Besides this, a commercial insulation material (IM) was employed to research its effect on preventi
Low temperature will reduce the overall reaction rate of the battery and cause capacity decay. These failures of batteries at low temperatures are related to the obstruction of ion transport.
In addition to low temperature cycling, batteries also experience low temperature exposure. Unlike low temperature cycling, low temperature exposure involves batteries experiencing a low temperature period without activity, resuming cycling at room temperature.
How does temperature affect the temperature difference within a single battery?
Meanwhile, the temperature difference within a single battery was also exacerbated by low temperature; namely, the uniformity of the battery surface temperature deteriorated under low temperature conditions. Moreover, the non-uniformity of temperature within a single battery was found to be aggravated by a high cycling rate.
Why do batteries heat up more under low temperature conditions?
Besides this, a higher temperature rise was observed under low temperature conditions, which might be attributed to the fact that the internal resistance of the batteries was larger, resulting in greater heat generation.