Emerging Electrode Materials for Li-Ion Capacitor

In today’s era, the development of energy storage systems is vital due to the intermittent nature of renewable energy sources. In this regard, lithium-ion capacitors (LICs) have attracted significant attention in energy storage systems due to their ability to combine the advantages of lithium-ion batteries (LIBs) and supercapacitors (SCs). The simultaneous supply of high energy and power density combined with high cyclic stability enables LICs to be applied in versatile fields including automotive (electric vehicles), electronics (mobile phones, portable PCs, circuits, power tools), and the power industry (grid systems). LICs’ performance is mostly influenced by the electrode materials. Therefore, exploring and developing novel electrode materials are the key to achieving the improved electrochemical performance of LICs. With this motivation, this chapter presents the requirements and selection criteria of electrode materials for LICs. A brief overview of the electrodes based on sulfides, oxides, silicon, MXenes, and carbon materials along with their properties has been discussed. Additionally, a concise view of the fundamental concepts of LIC along with the device architecture, current developments, drawbacks, and future scope are presented in the chapter.