The asymmetric hybrid supercapacitor was developed to increase the energy density of a capacitor while not compromising the cyclability. The asymmetric hybrid supercapacitor was modeled to see if it could combine the high specific energy of the lithium-ion battery with the high specific power of an EDLC.
The particular combination of nanostructure, microstructure and non-stoichiometry for the prepared lithium titanate is believed to underlie the observed electrochemical performance of material. Ensuring effective ionic and electronic transport in the electrodes is crucial, to construct high-performance batteries.
We also investigate an asymmetric hybrid supercapacitor (a lithium titanate spinel/activated carbon system). We show that this technology, which has a higher energy density than a traditional EDLC, may obtain 13 Wh/kg (without accounting for packaging weight) and has promise for meeting the demands of an HEV. Export citation and abstract BibTeX RIS
We show that a 2.7 V electrochemical double-layer capacitor (EDLC) available today is unable to meet these goals. It would be necessary to increase the intrinsic capacitance by a factor of 3, or to increase the voltage window to 3.7 V. We also investigate an asymmetric hybrid supercapacitor (a lithium titanate spinel/activated carbon system).
Hybrid supercapacitor consisting of activated carbon and synthesized Li 4 5 12 as electrodes is assembled inside the glovebox filled with argon gas. Electrochemical characteristics of hybrid supercapacitor are observed by constant current charging-discharging cyclic voltammetry.
Owing to its high safety and zero strain property, lithium titanate (Li 4 Ti 5 O 12 (LTO)) has attracted significant interest as a negative-electrode material in lithium-ion batteries and capacitors [1, 2].