The quality of acetylene carbon black has multifaceted impacts on the performance of lithium thionyl chloride batteries.

In terms of conductivity, high-quality acetylene carbon black has fewer impurities and a high degree of graphitization, enabling it to form a better conductive network, enhancing the conductivity of the battery electrode. This is beneficial for the rapid transfer of electrons during high-rate discharge of the battery and reduces the internal resistance of the battery. In contrast, low-quality acetylene carbon black may contain more impurities, which can interfere with the formation of the conductive network, leading to an increase in the internal resistance of the battery and a decline in discharge performance.

Regarding the utilization rate of active substances, high-quality acetylene carbon black can make the active substances distribute more evenly in the electrode, allowing for sufficient contact between active substances and between active substances and the electrolyte. This helps to improve the utilization rate of active substances, thereby increasing the specific capacity and energy density of the battery. Poor-quality acetylene carbon black will cause an uneven distribution of active substances, making some active substances difficult to participate in the reaction and reducing the energy output of the battery.

In terms of battery stability, good acetylene carbon black can enhance the stability of the electrode structure, reducing the volume change and the shedding of active substances during the charging and discharging process, which helps to maintain the stable performance of the battery and extend the cycle life of the battery. Low-quality acetylene carbon black may lead to a loose electrode structure, prone to problems such as the shedding of active substances during the battery operation, affecting the safety and service life of the battery.