Energy Storage Technologies: Principles, Materials, Performance and Future Perspectives

Energy storage technologies are key to the shift toward sustainable and dependable energy systems. The growing use of renewable energy sources like solar and wind power has created a strong need for technologies that can store excess electricity and supply it when generation is low. Energy storage systems perform important functions such as balancing energy, managing peak loads, regulating frequency, providing backup power, supporting electric transportation, and facilitating the integration of distributed renewable generation. This chapter offers an overview of major energy storage technologies including electrochemical batteries, supercapacitors, mechanical storage, thermal energy storage hydrogen storage, and new technologies. Special focus will be given to rechargeable batteries and supercapacitors because they play a big role in portable electronics electric vehicles grid applications hybrid energy-storage systems. The working principles important electrode materials electrolyte materials performance parameters advantages limitations application of different technologies will be discussed Key parameters for comparing storage technologies include energy density power density efficiency cycle life response time safety cost environmental impact Recent developments in lithium-ion sodium-ion solid-state batteries metal-ion batteries advanced supercapacitors are also discussed The chapter highlights the importance nanostructured materials hybrid electrodes solid electrolytes sustainable materials in developing next-generation energy-storage devices Finally challenges future prospects energy-storage technologies are presented emphasizing need safe economical environmentally responsible high-performance storage systems for sustainable future.