Hydrogen-Based Energy Storage Systems: A Review

Conventional energy sources are based on fossil fuels and have several impacts including pollution, global warming, and high cost in addition to that they are non-renewable and running fast. Renewable energy resources such as solar and wind energy are promising alternatives. However, one of the major limitations of renewable energy sources is that they provide us with discontinuous energies and most of them are unavailable all the time. As a result, to provide continuous power, these energy resources should be integrated with energy storage systems. This paper overviews the different storage approaches and focuses on Hydrogen-based energy storage methods. It presents the state-of-the-art hydrogen storage methods and addresses the technical challenges in this field.