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The Supercapacitor Advantages

The Supercapacitor Advantages

Each day brings a new technical innovations, and the demand for smaller, more portable and more functional electronics. This puts pressure on energy supplies to be light and small, run for long intervals of time (i.e., have lots of energy), and meet the demands of multiple high current loads (i.e., have a high energy capability). Simply put, these demands can't be met by anybody portable energy supply.

For decades, batteries have been the preferred storage machine for portable electronics, primarily because of their ability to store energy (high energy density). But batteries take a long time to discharge and recharge, which limits their ability to deliver power. Overcoming this energy deficit is tough, if not unattainable, and even newer battery technologies reminiscent of lithium ion are nonetheless a poor resolution for high power applications. In applications demanding high energy, over-engineering the battery will not often be the fitting answer, and can typically result in elevated measurement, weight, and price, and/or reduced cycle life and energy. In other words, a magic bullet is hard to find.

What Makes Supercapacitors Super?
Supercapacitors combine the energy storage properties of batteries with the ability discharge characteristics of capacitors.

To achieve their energy density, they contain electrodes composed of very high surface space activated carbon, with a molecule-thin layer of electrolyte. For the reason that amount of energy able to be stored in a capacitor is proportional to the surface space of the electrode, and inversely proportional to the hole between the electrode and the electrolyte, supercapacitors have an extremely high energy density. They're subsequently able to hold a really high electrical charge.

The high energy density derives from the fact that the energy is stored as a static charge. Unlike a battery, there is no chemical response required to charge or discharge a supercapacitor, so it could be charged and discharged very quickly (milliseconds to seconds). Similarly, and again unlike a battery, because there are not any chemical reactions going on, the cost-discharge cycle life of a supercapacitor is nearly unlimited.

Supercapacitor Traits

Cost/Discharge Time: Milliseconds to seconds
Operating Temperature: -40°C to +85C°
Operating Voltage: Aqueous electrolytes ~1V; Organic electrolytes 2 – 3V
Capacitance: 1mF to >10,000F
Working Life: 5,000 to 50,000 hrs (a function of temperature and voltage)
Power Density: 0.01 to 10 kW/kg
Energy Density: 0.05 to 10 Wh/kg
Pulse Load: 0.1 to 100A
Pollution Potential: No heavy metals
Supercapacitor Advantages

Provide peak power and backup power
Prolong battery run time and battery life
Reduce battery dimension, weight and value
Enable low/high temperature operation
Improve load balancing when used in parallel with a battery
Provide energy storage and supply balancing when used with energy harvesters
Cut pulse present noise
Lessen RF noise by eliminating DC/DC
Minimise house requirements
Meet environmental standards

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