• Supercapacitor is a next-generation energy storage device. They are also known as ultracapacitors. ​
  • It has significant advantages over conventional capacitors and lithium-ion batteries (LIB), such as high power density, long durability, and ultrafast charging characteristics.
  • The main components of supercapacitors include an electrode, electrolyte, separator, and current collector.
  • The electrode and electrolyte are the pivotal components that directly determine the electrochemical behavior of the supercapacitors.
  • The manufacturing cost of electrode materials and electrolytes accounts for a major portion of the supercapacitor’s manufacturing cost.
  • An electrode is a solid electric conductor used to take an electric current to or from a power source.
  • An electrolyte is a substance that produces an electrically conducting solution when dissolved in a polar solvent, such as water.

Supercapacitor Device

  • It is developed from industrial waste cotton-based electrodes & natural seawater electrolytes.
  • Industrial waste cotton was converted into highly porous carbon fibers by an activation process and then utilized to make high-performance supercapacitor electrodes.
  • Natural seawater was explored as an environment-friendly, cost-effective, and alternative aqueous electrolyte.


  • This supercapacitor showed great potential for practical implementation.
  • It exhibited maximum capacitance, good durability, and high efficiency.
  • Capacitance is the ability of a system to store an electric charge.
  • Efficiency denotes the charge transfer in a system facilitating an electrochemical reaction.
  • When integrated with a solar cell, it will become a low-cost, eco-friendly, efficient, and self-powering device.
  • It has a long life cycle and can be used as a maintenance-free power supply.
  • It can also overcome the drawbacks of the intermittent nature of the solar irradiation.

Biodegradable Supercapacitor

It is an electrochemical charge storage device with a fast charging/discharging cycle, high power density and a longer lifecycle. 


  • This supercapacitor, which can fully charge a device within 10 seconds, was developed from seaweed (marine macroalgae).
  • The device has high tensile strength and performance and is cost-effective, according to the researchers.
  • The product can be used in electronics, memory backup systems, airbags, heavy machines, electric vehicles, etc.; hence, it holds a huge business prospect. 

Related Links:

Design Linked Incentive (DLI) SchemeSemicon India Programme
Chip 4 or Fab 4 AllianceProduction Linked Incentive (PLI) Schemes