High temperatures can cause electrolyte evaporation, accelerated plate corrosion, increased self-discharge, and even thermal runaway (thermal runaway battery).
Batteries can pose significant hazards, such as gas releases, fires and explosions, which can harm users and possibly damage property. This blog explores potential hazards associated with batteries, how an incident may arise, and how to mitigate risks to protect users and the environment.
What are the thermal hazard issues of lithium batteries?
In summary, the thermal hazard issues of lithium batteries can be roughly categorized into several aspects, namely, temperature control, preventing or delaying the occurrence of thermal runaway, and fire treatment. Keeping thermal safety is the fundamental requirement to ensure the thermal safety of batteries (battery packs).
What happens if you run a battery at a high temperature?
Thermal runaway often occurs at high temperatures as they can trigger exothermic reactions in the battery. As the reactions produce more heat and increase battery temperature, it can lead to the destruction of the battery, as well as workplace fires and explosions.
Why do batteries need a higher operating temperature?
The increase in operating temperature also requires a more optimized battery design to tackle the possible thermal runaway problem, for example, the aqueous–solid–nonaqueous hybrid electrolyte. 132 On the cathode side, the formation of LiOH will eliminate the attack of superoxide on electrodes and the blocking of Li 2 O 2.
Does temperature affect battery performance?
Although low temperatures have a capacity-enhancing effect on the discharge process, researchers have focused more on the effects of elevated temperatures on battery performance because low temperatures lead to an increase in the overpotential during charging, 118 which tends to result in accumulation of heat and triggering of thermal runaway.
What happens if batteries are not handled properly?
If batteries aren't handled properly, it can result in personal injury, property damage and environmental pollution. Great care should be taken to ensure that batteries don't suffer any kind of damage. This means handling the batteries carefully, not stacking them in storage, and ensure they're not left lying around loose on shelves or desks.