Analysis of the Different Mechanisms of Electrochemical Energy Storage in Magnetite Nanoparticles

摘要

The use of nanostructured metal oxides as active electrode components of electrochemical energystorage devices provide benefits both from capacitive effects and from the short path lengths forfaradaic processes, both of which becoming increasingly important at nanoscale dimensions. In thiswork, we analyze the capacitive and faradaic contributions to energy storage for Fe3O4 at two differentnanoscale sizes in neutral aqueous media. The understanding of the contributions of each one of theeffects at different sizes for different materials may provide clues for the design of devices with bothhigh power and high energy density.