HDJNM_7261625 1..1 Editorial Nanostructure Materials as a Promising Route for Efficient Renewable Energy Production, Storage, and Conversion Nour F. Attia ,1,2 Slama Sami,3 Sally E. A. Elashery,4 and Jamal Siddiqui5 1Fire Protection Laboratory, Chemistry Division, National Institute for Standards, 136, Giza 12211, Egypt 2Department of Energy Engineering, Gyeongnam National University of Science and Technology (GNTECH), Jinju 52725, Republic of Korea 3Jeddah Community College, King Abdulaziz University, Jeddah, Saudi Arabia 4Chemistry Department, Faculty of Science, Cairo University, Gamaa Str., 12613 Giza, Egypt 5Department of Chemistry, School of Basic Sciences and Humanity, Lingaya’s University, India Correspondence should be addressed to Nour F. Attia; drnour2005@yahoo.com Received 21 January 2020; Accepted 22 January 2020; Published 31 January 2020 Copyright © 2020 Nour F. Attia et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The rapid growth of worldwide population in conjunction with expansion in industry sectors in the world attributed to huge consumption of limited stock fossil fuels. Hence, this expected energy crisis forced the world to find a clean renew- able source of energy instead of consumable fossil fuel one. Therefore, there are intensive efforts to use solar energy, wind energy, and hydrogen energy. However, the production, stor- age, and conversion of these kinds of energy sources require development of smart materials to facilitate their rapid com- mercialization. On the other hand, the nanomaterials have received intensive scientists’ interest for various applications due to their outstanding chemical, physical, mechanical, elec- trical, and electronic properties. Hence, the harness of unique properties of materials and their hybrid nanocomposites will be much appreciated and demanded to be used in energy- related applications such as production, storage, and conver- sion. Therefore, in this special issue, we invited the scientists and researchers all over the world to submit their original novel work based on nanomaterials for solar cells, fuel cells, hydrogen storage and production, hybrid nanocomposites, and supercapacitors. In conclusion, we are happy to announce the publication of four original research papers and one review in the field of nanostructure materials as a promising route for efficient renewable energy applications. Conflicts of Interest There is no conflict of interest to declare. Acknowledgments The lead guest editor would like to thank all authors who contributed in this special issue and the scientists who reviewed the manuscripts, also the guest editors who shared their time and effort to have this issue published. Nour F. Attia Slama Sami Sally E. A. Elashery Jamal Siddiqui Hindawi Journal of Nanomaterials Volume 2020, Article ID 7261625, 1 page https://doi.org/10.1155/2020/7261625 https://orcid.org/0000-0002-0713-1738 https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.1155/2020/7261625 Nanostructure Materials as a Promising Route for Efficient Renewable Energy Production, Storage, and Conversion Conflicts of Interest Acknowledgments