Pressure‐temperature‐voltage relationships in hermetically sealed high rate normalLi/SOCl2 cells have been studied using specially instrumented C‐size cells. The cells generated considerably lower pressures than those expected on the basis of established discharge reactions. This is believed to be due to the SO2 generated being complexed by LiAlCl4 and/or absorbed by the carbon cathode. Li‐limited cells produced lower internal temperatures and pressures towards the end of discharge and during voltage reversal than cathode‐limited cells. In high rate discharge involving >10 mA/cm2, Co‐TAA‐catalyzed cathode cells exhibited higher capacities and lower IR heating than uncatalyzed cells. Li‐limited Co‐TAA catalyzed cathode cells appear to be a desirable design for high rate applications.

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