Supercapacitor (ionistor) is a promising energy storage solution. In terms of its technical properties, it is in between the accumulator batteries and regular capacitors. In a supercapacitor, energy is stored in the porous structure of the electric double layer on the surface of an electrode, as a result of ions absorption from electrolytes.

The operating principle is as follows: when potential difference is applied to the output leads, negative ions from the electrolyte are gathered at the cathode and positive ions are gathered at the anode. Dielectric porous separator lets the ions from the electrolyte pass through and prevents short circuit between the electrodes.

The energy storage principle: electricity is stored statically by polarization of the charged electrolyte particles, and no chemical reaction takes place during the charge-discharge cycles.

Supercapacitors are able to store a lot of energy over a short period of time, minimizing the recharge time. Besides, they are highly efficient. At present, lithium-ion batteries are only able to release 60% of energy used to charge them, while supercapacitors are able to release over 90%.

Another advantage is their huge resource. Lithium-ion and lithium-polymer accumulators noticeably deteriorate (reduced capacity versus the initial) after hundreds of charging/discharging cycles, while supercapacitors are able to withstand up to a million cycles without any noticeable deterioration.

Cell characteristics

Due to an original design, base cells of supercapacitor modules offer a number of advantages:

  • Minimum number of components
  • Minimal electrical resistance
  • Commutation over the entire side surface
  • Operational after being tested with short circuit currents
  • Optimization of current and thermal fields
  • Lower mass of cell and assembled module

Module assembly technology

Construction of elementary cells allows assembling supercapacitor modules of any voltage and variable size. A configuration depends on the order. They may differ in terms of ingress protection:

  • IP20
  • IP54
  • IP65
  • IP67

Charge balancing system configuration options:

  • Active balancing
  • Passive balancing

Module cooling configuration options:

  • Natural cooling
  • Air cooling
  • Water cooling

Comparative properties

  • Peak Current 1 sec
  • Continuous Current
  • Maximum Discharge Energy
  • Electrical resistance
  • Stored Energy
Module characteristics Cell characteristics
Cell 2,85V