Energy storage principle of pseudo-capacitor

How do Pseudocapacitors store electrical energy?

Pseudocapacitors store electrical energy through a faradaic reaction. This process involves an electrochemical reaction at the electrode surface, unlike traditional capacitors that store energy in an electric double-layer.

How can pseudocapacitive materials provide high power and high energy density?

There is an urgent global need for electrochemical energy storage that includes materials that can provide simultaneous high power and high energy density. One strategy to achieve this goal is with pseudocapacitive materials that take advantage of reversible surface or near-surface Faradaic reactions to store charge.

What is the working principle of pseudocapacitor?

The working principle of a pseudocapacitor is to store electrical energy by transferring electron charge between electrode and electrolyte through reduction-oxidation reactions, electrosorption, and intercalation processes called pseudocapacitance.

What type of capacitor is a Pseudocapacitor?

A Pseudocapacitor is part of an electrochemical capacitor that uses an electric double-layer capacitor to form a supercapacitor. Pseudocapacitors store electrical energy through a faradaic reaction and are used in consumer electronics.

What is the main source of energy storage in pseudo-capacitors?

The main source of energy storage in pseudo-capacitors is by the mean of faradaic reaction. Oxidation and reduction happen at or near the surface of the electrode. In supercapacitors with a pseudocapacitive electrode, a fast and reversible redox reaction occurs which increases overall capacitance.

How have pseudo-capacitors revolutionized the field of super capacitors?

Pseudo-capacitors have revolutionized the field of supercapacitors (Fig. 1) owing to distinct electrochemical features for high charge storage capability as well as enhanced energy density due to offering an efficient passage to charge transfer .