An alkaline battery manufacturer explains the factors affecting the discharge efficiency of alkaline batteries.

2025-11-11 15:43:49

The discharge efficiency of alkaline batteries is influenced by a variety of factors. First, temperature: low temperatures significantly reduce the ionic conductivity of the electrolyte, leading to increased internal resistance and decreased discharge capacity; high temperatures may accelerate electrolyte evaporation and electrode material decomposition. Second, discharge current: high current discharge intensifies polarization, causing a faster voltage drop and reduced capacity utilization. Internal resistance is also a key factor; excessively high internal resistance is converted into heat, wasting energy and reducing efficiency.

Furthermore, the purity and structure of electrode materials directly affect the electrochemical reaction rate; impurities or structural defects hinder electron and ion transport. The concentration and stability of the electrolyte are equally important; too low a concentration restricts ion migration, while too high a concentration may trigger side reactions. Finally, battery design and manufacturing processes, such as electrode thickness and separator porosity, also have a profound impact on discharge efficiency.