In this modern era, our society faces a serious energy crisis due to ever-increasing human population. Energy consumption of today’s world starts from small-scale electronic gadgets to high power consuming electric vehicles. To supply power on demand, researchers focus on alternative renewable energy resources such as solar energy, wind energy, hydropower, geothermal energy, and bioenergy. Effectively, energy conversion and storage technologies such as solar cells, fuel cells, secondary batteries, supercapacitors, and other self-powered systems are under rigorous investigation. The efficient energy conversion and storage performance of those technologies rely on material properties of their electrode, electrolyte, and other device components. It is recently known that nanostructuring of device components leads to enhanced efficiency in terms of robustness and reliability of the energy conversion and storage systems. Moreover, the nanostructured materials have attracted great interest due to their unique physicochemical and electrochemical properties. Hence, the utilization of such materials in nanodimensions will create enormous impact on the efficiency of various energy conversion and storage devices.

The aim of this special issue is to publish original research articles and reviews on nanoscience and nanotechnology aspects of advanced materials for electrochemical energy conversion and storage applications. This issue is particularly focused on synthesis and characterization of nanostructured and nanoscale materials for various types of batteries, supercapacitors, fuel cells, solar cells, solar fuel devices, and self-powered systems.

Potential topics include but are not limited to the following:

• Batteries: Li-ion batteries, Na-ion batteries, Mg-ion batteries, Al-ion batteries, Li-S batteries, metal-air batteries, and redox flow batteries
• Supercapacitors: electrochemical double layer capacitors, pseudocapacitors, hybrid capacitors, and flexible solid-state supercapacitors
• Fuel cells: proton exchange membrane fuel cells, alkaline fuel cells, phosphoric acid fuel cells, molten carbonate fuel cells, solid oxide fuel cells, and microbial fuel cells
• Solar cells and solar fuels: dye-sensitized solar cells, quantum dot solar cells, perovskite solar cells, photoelectrochemical water splitting, and photoelectrochemical CO2 reduction
• Self-powered systems: integrated energy conversion and storage devices