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Cost-effective supercapacitor developed from industrial waste cotton & natural seawater electrolyte

Cost-effective supercapacitor developed from industrial waste cotton & natural seawater electrolyte

A simple, environmentally friendly, low-cost, and sustainable supercapacitor electrode has been developed by the researchers working at the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), an autonomous organisation functioning under the Department of Science and Technology, from industrial waste cotton that can be utilised as an energy harvester storage device.

Key Points:

  • The researchers have explored the natural seawater as an alternative aqueous electrolyte for the first time as it is cost-effective, environmentally friendly and scalable.
  • The alternative aqueous electrolyte can replace the aqueous-based electrolytes that are used currently in industries for the fabrication of supercapacitors.
  • Supercapacitors are next-generation energy storage devices and are preferred due to advantages like long durability, ultrafast charging and high power density, in comparison to the conventional lithium-ion batteries (LIB) and capacitors.
  • The Supercapacitor comprises four primary components viz. Current collector, Electrolyte, Separator, and Electrode and electrode and electrolyte are of crucial importance and help in discerning the electrochemical behaviour of supercapacitors.
  • Scientists have transformed the industrial waste cotton (Trash) into carbon fibers with high porosity (Treasure) by activating them and then employing the porous carbon fibers for high-performance electrodes for the supercapacitors.
  • This innovation has reduced the cost of electrode and electrolyte by a huge margin and made the development of supercapacitors affordable.

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