Dear Colleagues,

In the era of new technology and science, the ever more scarce and thus expensive fossil fuels, along with the worldwide increase in energy demand, are a burden that scientists need to address today. The development of new, more efficient materials for the production and storage of energy have now become the goal of research. In the pursuit of a hydrogen economy, hydrogen storage technologies developed greatly, from both a gravimetric and a volumetric viewpoint. Different storage systems are known, yet more insight on their storage mechanism is needed for overcoming the disadvantages associated with energy storage.

Energy storage solutions such as modern electricity grids need to adjust to compensate for consumption swings. Renewable sources like eolian and solar power harnessing meet the limitations brought about by their intermittent nature. Hydrogen storage in either pressurized hydrogen tanks or various chemical storage systems face the safety hazard and convenience issues related to charging time, capacity and release, and the availability of charging stations. The transmission and distribution of energy along the delivery chain need also constant adjusting to these changing variables, while depleted and end-of-life storage solutions need to be reincorporated in a circular economy that reduces waste to a minimum.

The current volume aims to provide an overview of the current state of the art of energy storage across all storage technology methods and modes currently in use and research. This Special Issue will cover recent advances in energy storage materials and methods, characterization techniques and means to reduce the final ecological footprint of aforementioned methods.

It is our pleasure to invite you to submit a manuscript for this Special Issue. Full papers, short communications, and reviews are welcome.

Dr. Cezar Comanescu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• energy storage
• energy capacity
• hydrogen storage
• hydrogen and fuel cells
• cryogenic storage
• efficiency and performance
• smart grid
• phase charge materials (PCMs)
• environmental impact