Manganese Dioxide as a Supercapacitor Material

The creation of safe and practical energy storage technologies has emerged as one of the most crucial issues in the field of sustainable development in the modern world due to the serious environmental effects of fossil fuels and the explosive growth of the global economy. Supercapacitors are a brand-new kind of energy storage technology with benefits for the economy. They have sufficient power density, an extended cycle life, and a wide temperature range. Manganese dioxides (MnO 2 ) are employed in industry for greater than a century, due to its inexpensive price, widespread availability in nature, and environmental friendliness. MnO 2 is a promising electrode to overcome in the energy storage devices. In this chapter, we are going to describe the characteristics of MnO 2 nanomaterials with various morphologies. Two methods which are benefited for the synthesis, electrochemical and other properties are mentioned. Evidence exists for the influence of the shape (morphology) of nanosized MnO 2 particles on those traits. Specific capacitance (C p ), Power density (P d ), Energy density (E d ) or many other parameters of supercapacitors are examined.