Any material that can react to release energy is referred to as an energy material. Energy materials are a type of substance that has a lot of chemical energy stored in it that can be released. Energy materials are a large category of materials that can be used for energy conversion and transmission. Furthermore, energy materials have the potential to reduce the power consumption and efficiency of current equipment. Energy materials research encompasses a wide range of topics, including engineering devices. The definition of energetic substance is extremely broad, encompassing anything from simple automotive fuels like gasoline and diesel to powerful explosives like gunpowder, dynamite, and TNT.
Energy harvesting (EH) is a method in which energy is scavenged and converted from sources such as mechanical load, vibrations, temperature gradients, and light, among others, to generate relatively low amounts of power in the nW-mW range. Energy harvesting can be used to harvest a range of natural resources (e.g., the utilisation of mechanical vibrations and motion, magnetic field, and heat). The merit of the material is crucial to the performance of energy-harvesting devices that capture such broadband low-amplitude energy from the environment. The field of energy harvesting materials is rapidly expanding and gaining a lot of attention.