New Supercapacitors of Hybrid Configurations
[EN] In recent years, the improvement of the energy density of nano-composite battery materials has been object of great study. Hybridizing battery and capacitor materials overcome the energy density limitation of existing generation-I capacitors without much sacrificing the cycling performances. Normal battery-capacitor hybrids employ high-energy & sluggish redox electrode and low-energy & fast double-layer electrodes, possibly producing a larger working voltage and higher over-all capacitance. In order to smoothly operate such asymmetric systems, however, the rates of the two different electrodes must be highly balanced. Especially, the redox rates of the battery electrodes must be substantially increased to the levels of double-layer process. In this report, we attempt to identify the essential issues for the realizable hybrids and suggest ways to overcome the rate enhancement by exemplifying ultrafast performance of the Li4Ti5O12 nanocrystal prepared via a unique in-situ material processing technology under ultra-centrifuging.
| Main Authors: | , |
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| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Grupo Español del Carbón
2013-06
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| Subjects: | Supercapacitors, Supercondensadores, Nanocomposites, Nanocompositos, Batteries, Baterías, |
| Online Access: | http://hdl.handle.net/10261/81752 |
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