The present day energy supply scenario is unsustainable and the transition towards a more environmentally friendly energy supply system of the future is inevitable. Hydrogen is a potential fuel that is capable of assisting with this transition. Certain technological advancements and design challenges associated with hydrogen generation and fuel cell technologies are discussed in this review. The commercialization of hydrogen-based technologies is closely associated with the development of the fuel cell industry. The evolution of fuel cell electric vehicles and fuel cell-based stationary power generation products in the market are discussed. Furthermore, the opportunities and threats associated with the market diffusion of these products, certain policy implications, and roadmaps of major economies associated with this hydrogen transition are discussed in this review.
Engineering is about observing physical conditions and being able to mathematically model the systems and solve problems for optimal design parameters using well-defined mathematical approaches. The government of India’s creation of a market for green hydrogen and ammonia promotes the development of newer technologies for producing and using these green fuels. One of the most popular processes for manufacturing ammonia is the Haber-Bosch process of 1904, which needs a high temperature of around 500°F and a high pressure of 150 to 300 bar. A study on the synthesis of green ammonia from nitrogen and water using renewable energy sources like sun and wind was discovered for the first time in 2013. Start-ups worldwide are developing a tabletop hydrogen generator technology that breaks ammonia and creates high-grade hydrogen suitable for fuel cells.
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