High-Performance Mesostructured Organic Hybrid Pseudocapacitor Electrodes

Abstract

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 903 wileyonlinelibrary.com carbon, [ 2 ] transition metal oxides, [ 3 ] conducting polymers, [ 4 ] and hybrids of these materials, [ 5 ] ECs still only store an order of magnitude less energy than typical secondary lithium ion batteries. [ 6 ] To increase the energy density of ECs, systems which use hybrid electrodes containing pseudocapacitive materials (faradaic process) are under active investigation. [ 7 ] Organicbased faradaic materials have been considered intriguing due to their large potential gravimetric energy density, low cost, mechanical fl exibility, and chemical design fl exibility. [ 8 ] For example, quinone (Q)-hydroquinone (QH 2 ) redox couples, inspired by biological electron transfer processes in photosynthesis and respiration, are drawing considerable attention for high capacity pseudocapacitors due to their ability to reversibly store two electrons and two protons per quinone in one kinetic step at low pH values. [ 5b , 9 ] It has been calculated that the Q/QH 2 reaction provides a theoretical capacitance of 1751 F g −1 , eight times larger than conventional supercapacitors and threefold greater than the theoretical capacitance of graphene (≈550 F g −1 ). [ 5b , 10 ]

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Cite this paper

@inproceedings{Kim2015HighPerformanceMO, title={High-Performance Mesostructured Organic Hybrid Pseudocapacitor Electrodes}, author={Sung-Kon Kim and Jeffrey S. Moore and Paul V Braun}, year={2015} }