Dealing with Capacity Loss Mechanisms in Nickel-Hydrogen Cells and Batteries

摘要

The available information on life-cycle testing coupled with post-test examination of the internal cell components has been reviewed. A number of different forms of capacity loss have been identified. Some of these mechanisms have been seen by themselves, while others were seen in combination with other mechanisms. Based on the interrelationships between amounts of capacity loss as impacted on cycling conditions, recommendations have been made to reduce the different forms of capacity loss that have been detected. Cycling temperature and recharge protocol have been found to play a significant role in the ultimate cycle life of nickel-hydrogen cells and batteries. This paper attempts to bring together all of the capacity loss mechanisms that have been identified as of this writing. Further, suggestions are presented to minimize the impact of each of these mechanisms on the cycle life of these cells.