4.6 Article

Hybrid energy storage devices combining carbon-nanotube/polyaniline supercapacitor with leadacid battery assembled through a directly-inserted method

Journal

RSC ADVANCES
Volume 4, Issue 50, Pages 26378-26382

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra02104e

Keywords

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Funding

  1. National Basic Research Program of China [2012CB932301]
  2. Natural Science Foundation of China [51173098]

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In this work, we used a new method to assemble hybrid energy storage devices, combining electrochemical capacitor with lead-acid battery. The ultrathin, flexible and low-weight carbon-nanotube/polyaniline (CNT/PANI) composite films used as supercapacitor electrodes were directly-inserted into a lead-acid battery in series or parallel. This quite simple and effective method is promising for large-scale industrialization as it reduces production and process complexity. The assembled hybrid devices showed notably improved properties, including a 19% increase in specific capacity, a 21% increase in specific energy or a 6% increase in specific power when compared to the conventional independent lead-acid batteries, which can be attributed to the synergic effect of batteries and supercapacitors.

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