The relationship between heat production and gas release of batteries is further analyzed. The process of thermal runaway (TR) of lithium-ion batteries (LIBs) is often accompanied by a large amount of heat generation and gas release. However, the gas release behavior during the process of TR remains unclear.
The gas release behavior varies with the three cathode materials. The relationship between heat production and gas release of batteries is further analyzed. The process of thermal runaway (TR) of lithium-ion batteries (LIBs) is often accompanied by a large amount of heat generation and gas release.
Higher temperatures, nickel content significantly boost gas production, degradation. Revealed unique gas evolution in anode-free Li-metal batteries. Identified key conditions influencing gas production, battery design optimization. Data links gas evolution to battery degradation, boosts safety, efficiency.
Subsequently, the gas releases behavior of fully charged batteries during the TR process is obtained. Before the battery temperature approaches the uncontrollable temperature, the electrolyte volatilization and gas releasing are decoupled, the gas release of LFP, LMO and NCM batteries are 0.094 mol, 0.042 mol and 0.058 mol, respectively.
Solid-state battery technology is nascent, with limited commercial applications and sparse research on gas production behavior during TR. Moreover, there is a lack of clear elucidation regarding the disparities in gas production between solid-state and liquid-state batteries.
The gas components generated by the TR of batteries were quantitatively analyzed using the GC-MS method. To make more direct comparisons based on the differences between different experiments, Fig. 6 illustrates the normalized gas composition after removing minor components and N 2.