Water Electrolysis-to-Green Hydrogen: a Review of Main Extraction Methods, Storage, and its Integration with Fuel Cells

Abstract

In recent years, the terms green chemistry and renewable energy sources have become important terms that scientists and researchers keep talking about and about their promising applications in reducing environmental pollution and global warming, which led to sharp changes in the climate and thus became a real threat to the vital balance on the surface of the planet. This led to the racing of many countries such as the United States, Japan, Germany, Saudi Arabia, Egypt, and others countries in urging the efforts of scientists and researchers towards applying renewable energy sources and converting them from a green dream into a tangible reality by making them an alternative to fossil fuels, which technological progress cannot be imagined without its presence.

One of the essential applications of green chemistry is the production of what is called Green hydrogen (renewable energy source), which is described as the fuel of the future, by making it an excellent alternative to fossil fuels, and thus its entry into countless applications without any emission of any polluting gases.

This article aims to shed light on green hydrogen in terms of its concept, extraction methods, and how to store it and discuss the pros and cons of it and its integration with fuel cells.