Long-Lasting Nb2O5-Based Nanocomposite Materials for Li-Ion Storage.
ACS Appl Mater Interfaces
; 9(3): 2267-2274, 2017 Jan 25.
Article
em En
| MEDLINE
| ID: mdl-28026165
ABSTRACT
Advanced nanostructured hybrid materials can help us overcome the electrochemical performance limitations of current energy storage devices. In this study, three-dimensional porous carbon nanowebs (3D-CNWs) with numerous included orthorhombic Nb2O5 (T-Nb2O5) nanoparticles were fabricated using a microbe-derived nanostructure. The 3D-CNW/T-Nb2O5 nanocomposites showed an exceptionally stable long-term cycling performance over 70â¯000 cycles, a high reversible capacity of â¼125 mA h g-1, and fast Li-ion storage kinetics in a coin-type two-electrode system using Li metal. In addition, energy storage devices based on the above nanocomposites achieved a high specific energy of â¼80 W h kg-1 together with a high specific power of â¼5300 W kg-1 and outstanding cycling performance with â¼80% capacitance retention after 35â¯000 cycles.
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MEDLINE
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En
Ano de publicação:
2017
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Article