Textbook in PDF format Drawing from both academic and industry-driven research, the book lays a strong foundation by covering supercapacitor classifications, electrode/electrolyte materials, and fabrication techniques. With recent advancements in materials science and device engineering, the book presents novel approaches to supercapacitor design utilizing cutting-edge materials, including MXenes, MOFs, and ionic liquids. It also addresses key challenges and explores promising directions in scalable, sustainable, and high-performance energy storage solutions