Gold-nickel battery effect refers to the phenomenon that during the use of gold-nickel batteries, due to the high activity of metal nickel on the anode, a chemical reaction will occur, resulting in an increase in internal pressure and energy loss of the battery.
Gold-nickel battery is a kind of widely used sub-capacitive battery, which is commonly used in household appliances, electric vehicles, storage power stations and other fields. In the process of charge and discharge, the anode in the gold-nickel battery is nickel-metal hydride. However, after prolonged use, nickel-metal hydride will react with water and oxygen to form hydrogen. Due to the increase of hydrogen, the pressure inside the battery will gradually increase. When the pressure exceeds the range that the battery container can withstand, it may cause the battery to leak or explode.
In addition, the metal nickel in the gold-nickel battery will also react with hydrogen ions in the electrolyte to form water and nickel ions. This reaction consumes the active material inside the battery, resulting in reduced battery capacity and energy loss.
In order to solve the problems caused by the gold-nickel battery effect, battery manufacturers usually take some measures, such as optimizing the battery formula and material selection, improving the design structure, and strengthening the charge and discharge control to extend the battery life and improve the energy efficiency.