Researchers have come up with a stress management plan and a retirement option for overworked lithium-ion batteries that power drones, shedding light on their limited lifespan under high-stress conditions. Published findings by the American Chemical Society revealed that heavy-duty drones carrying cargo might not be suitable for long-term, high-stress use with lithium-ion battery packs.
The analysis conducted by experts Ilias Belharouak and Marm Dixit involved pushing battery cells to the limit with a specially made electrolyte. During testing, the cells were subjected to rapid discharge of energy, simulating vertical takeoff requirements, followed by typical usage rates and recharge cycles. The results showed that none of the tested cells lasted more than 100 cycles under high-stress conditions, with decreased performance after around 85 cycles.
Despite the limited lifespan in drones, the study also found a promising second life for these batteries in energy storage or hybrid-electric vehicles. Researchers emphasized the need for infrastructure to integrate the batteries into other systems for repurposing in a sustainable manner.
As the electricity grid incorporates more renewable power sources like wind and solar energy, energy storage becomes increasingly important. Community solar programs offer a convenient way to access clean energy and reduce power bills while benefitting the environment. Perhaps one day, stressed-out drone batteries could contribute to delivering cleaner electricity to communities, fulfilling a unique second life.
