Hydrogen Energy

As we face global energy challenges, it becomes essential to focus on novel and innovative technologies that increase the diversity of energy resources. This requires significant innovation in energy production, conversion, delivery, storage, and end use. Hydrogen energy represents a great potential solution to meet global energy demand. Hydrogen energy could possibly represent a world where our energy-related emissions and other environmental damage issues are eliminated or minimized and where our demand for affordable, efficient, reliable, and clean energy is met. To fully understand "the hydrogen energy," it is necessary to comprehend all aspects of hydrogen from its characteristic properties to difference from existing fuels. Therefore, this chapter provides information on characteristics of hydrogen, and its comparison to other fuels and energy sources.