The idea behind fuel cells isn't really new. With the ratified Paris Agreement in 2016 to reduce greenhouse gases and the increasing needs of power, fuel cells are a much needed alternative way of energy production. Fuel cells posses low emissions due to high efficiency and low noise pollution due to rarely moving parts. Therefore they are excellent candidates for future stationary and mobile applications. We provide you a brief overview of the history of fuel cells, how they work and there mayor application fields.