The bachelor's thesis elaborates the topic of fuel cells. The introductory part briefly describes the basics of fuel cells operation as well as the dangers related to hydrogen use. The second chapter presents the development of fuel cells through history, from their accidental discovery to present day. The third chapter describes in more detail the types of fuel cells, modes of operation, advantages and disadvantages, and depending on those, possible application of each type. The fourth chapter deals with hydrogen production methods, essentially defining to what extent the fuel cell will be "clean" or how much its use pollutes the environment. Chapter five describes hydrogen storage with regard to its application. Sixth chapter is dedicated to comparing fuel and vehicle life cycle costs when using fuel cells and internal combustion engines. The advantages and obstacles that need to be overcome in order for fuel cell to be in massive use are described in chapter seven.