Abstract
Electrochemical energy storage devices comprising electrode material with both high power and energy density, is in high demand across the world. Designing advanced pseudocapacitive materials are one approach to achieve above mentioned challenging perspective. Pseudocapacitance, a faradaic process involving surface or near-surface redox processes, allows for high energy density while maintaining high charge–discharge rates. The fundamental electrochemical characteristics of pseudocapacitive materials are described in this chapter, with an emphasis on kinetic processes and differences between battery and pseudocapacitive materials. In addition, we discuss the various types of pseudocapacitive materials, highlighting the differences between intrinsic and extrinsic pseudocapacitive materials. Finally, we articulate the application of pseudocapacitive materials in aqueous and non-aqueous rechargeable batteries.
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