Porous nano/micro-structured materials provide a large surface area to volume ratio, tunable physical and chemical properties, size distribution, surface topology, and crystallinity. Due to these properties, these materials have been comprehensively studied for many years for energy-related applications, such as hydrogen storage, CO2 capture, solar cells, supercapacitors, and lithium-ion batteries.

The current challenge for academics and researchers is to build reliable, efficient, sustainable, and affordable media to store energy reversibly at ambient temperature and pressure. Global warming has been caused by the increase in CO2 emissions to the atmosphere and subsequent worsening climate changes are anticipated if CO2 emission is not reduced instantly. Different types of power generation plants and seawater desalination units utilizing fossil fuels are considered as a major contributor to the continuously elevating levels of CO2 emissions. Therefore, the development of new types of materials are required to store more energy as well as to capture more CO2 in order to reduce the effects of climate change.

This Special Issue aims to highlight the role of nanomaterials and micromaterials for energy storage in the fields of nanotechnology, physics, chemistry, and engineering. We invite researchers to contribute original research articles and review articles on the development of porous nanostructured materials to store different kinds of gases to overcome the challenges faced due to the depletion of fossil fuels and the effects of global warming.

Potential topics include but are not limited to the following:

• Synthesis and characterization of nanomaterials for renewable energy storage and applications
• Nanostructured material applications in energy storage
• Hydrogen storage in nanomaterials
• CO2 capture in nanoporous materials
• Synthesis, characterization, and applications of metal-organic frameworks (MOFs), polymers, and zeolites
• Nanomaterials for lithium-ion batteries
• Nanostructured material applications in drug delivery and tissue engineering
• Advanced energy storage technologies
• Metal hydride and alloy-based energy storage materials