(Invited) Towards Theoretical Benchmarks on the Performance Capabilities of Pseudocapacitance

The efficient storage of energy in hybrid capacitors is based upon the co-optimization of both double-layer capacitance and pseudocapacitive (Faradic) charge storage. This inevitably involves a delicate balance of nano-structural and nano-porosity engineering, coupled with carefully designed electron transfer properties giving rise to pseudocapacitance. In this talk we explore how one might systematically tune the redox properties of nanoparticles to facilitate a near ideal pseudocapacitive response. Subsequently, we examine fundamental constraints on such nanoparticle derived pseudocapacitance and its implications for hybrid capacitors derived from nanostructured electrodes. The “battery like” Faradaic features of pseudocapacitance will also be discussed. In general this work is intended to provide benchmarks on the optimal performance capabilities of hybrid capacitors and their construction via nanoporous/nanostructured electrodes.