Thin-Film Batteries: Fundamental and Applications

Thin-film batteries are solid-state batteries comprising the anode, the cathode, the electrolyte and the separator. They are nano-millimeter-sized batteries made of solid electrodes and solid electrolytes. The need for lightweight, higher energy density and long-lasting batteries has made research in this area inevitable. This battery finds application in consumer electronics, wireless sensors, smart cards medical devices, memory backup power, energy storage for solar cells, etc. This chapter discussed different types of thin-film battery technology, fundamentals and deposition processes. Also discussed in this chapter include the mechanism of thin-film batteries, their operation and the advantages of thin-film batteries over other batteries. The vast applications of thin-film batteries drive research in this area. These applications are discussed extensively.