P.M. Anjana and R.B. Rakhi

Supercapacitors are expected to be the integral parts of power devices in a broad range of future applications. Supercapacitors must deliver high energy and power densities, safe mode of operation, and long cycle life, for their widespread practical applications. A meaningful way to achieve these parameters is to develop advanced electrode materials, which can provide high specific capacitance values. Pseudocapacitive materials are emerging as favorable candidates as electrode materials for supercapacitors, as they are capable of promoting the capacitance of the device by the surface Faradic redox reactions. The present chapter starts with a brief overview of electrochemical capacitors followed by the description of different energy storage mechanisms contributing to pseudocapacitive charge storage. This chapter also covers the details of different types of pseudocapacitive electrode materials. Making hybrid composites of carbon and pseudocapacitive material is a promising approach to overcome the poor cycle life of pseudocapacitors.

Pseudocapacitors, Energy Density, Cycle Life, Electrode Materials, Hybrid Composites

Published online 11/5/2019, 30 pages

Citation: P.M. Anjana and R.B. Rakhi, Pseudocapacitors, Materials Research Foundations, Vol. 61, pp 141-170, 2019


Part of the book on Supercapacitor Technology

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