Abstract In this experiment, the device and external circuit of single-liquid and two-liquid primary batteries were designed using the controlled variable method and the combination method, and infrared thermography was applied to capture key evidence of heat generation sites. The experimental results demonstrated that the performance of the dual-liquid primary battery was superior to that of the single-liquid primary battery in terms of maximum output current, discharge efficiency and current stability, all other conditions being equal. Thermal images and precise temperature measurements obtained with a thermal imager revealed the main reasons for the difference in performance between the two primary batteries: the negative electrode of the single-liquid primary battery had a side reaction, and the internal resistance of the two-liquid primary battery was lower.
ZHOU Chun-Mei, ZHOU Qing-Shan. Performance Comparison Experiment of Single and Double Liquid Primary Batteries Based on Thermal Imaging[J]. Chinese Journal of Chemical Education, 2023, 44(11): 104-107.