Category: Fuel of the Future

Current Electrolytic Technologies

The kinetics of the O2 and H2 evolution reactions at the electrodes limit how fast hydrogen can be generated and are dependent on the electro­de’s chemical activity. Precious metals such as platinum and palladium generally make good electrodes, but they are prohibitively expensive. The reaction can be ‘‘overdriven’’ by applying a larger voltage than the […]

Hydrogen as Energy Carrier: Exergizing the Energy System

Recently, Joshi and co-workers evaluated the performance of the two routes of hydrogen production that are relevant to this textbook, namely PV and solar thermal systems, based on exergy analysis and a ‘‘sustain­ability index’’.46 As expected, the solar thermal hydrogen production system has a higher sustainability index because of higher exergy effi­ciency, when compared with […]

Solar Hydrogen

Hydrogen generated by water splitting induced by solar energy is the fuel of the future, which can replace fossil fuels and ultimately cease our dependence (or ‘‘addiction’’,22 to quote a former US president) on fossil hydrocarbons and coal, thus ending the emission of CO2 into the atmosphere that causes global warming and climate change. In […]

Hydrogen Production and Utilization

Hydrogen is widely employed in the chemical and petrochemical industries. The total world production of hydrogen as a chemical 9 Figure 1.7 The only emission produced by Frauscher’s Riviera 600 hydrogen- powered boat is clean water; H2 is obtained cleanly by photovoltaic electrolysis of water. (Photo courtesy of Fronius.) constituent and as an energy source […]

Hydrogen and Solar Hydrogen

1.1 Hydrogen: Structure and Properties First produced by Robert Boyle in 1671 by reacting mineral acids with iron, hydrogen was recognized as a discrete substance by Henry Cavendish in 1766.1 Cavendish named the gas ‘‘flammable air’’ and further reported in 1781 that it produced water when burned. In 1783, Lavoisier reproduced Cavendish’s findings, formulating the […]