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Unification Of Insertion And Supercapacitive Storage Concepts - Storage Profiles In Titania
This study bridges the gap between insertion-type batteries and supercapacitors, offering a unified approach for understanding the tradeoff between high energy density and rapid charge-discharge capabilities in energy storage. Insertion storage in battery electrodes and supercapacitive storage are typically considered to be independent phenomena and thus are dealt with in separate scientific communities. Using tailored experiments on titanium oxide thin films of various thicknesses, Xiao et al. demonstrate the simultaneous occurrence of both processes. Thick samples and/or high electronic (free) energies of the current collector favor the insertion mode, whereas thin samples and/or easy accommodation of excess electrons in the current collector favor the supercapacitive mode.
Source Xiao et al, Science 2024
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