Sodium hexafluorophosphate is widely used as an electrolyte salt in lithium-ion batteries due to its high stability and conductivity. It helps enhance the performance and lifespan of the batteries, making it essential for portable electronics, electric vehicles, and energy storage systems. Additionally, it is utilized in electrochemical applications and research, particularly in studies involving ionic conductivity and battery technology. Its role in ensuring efficient ion transport makes it a critical component in advancing energy storage solutions.