Keräyskondensaattoreiden

Keräyskondensaattoreiden, known in English as energy harvesting capacitors or supercapacitors, are electrochemical energy storage devices that bridge the gap between conventional capacitors and rechargeable batteries. They offer a significantly higher capacitance than traditional capacitors, allowing them to store a substantial amount of electrical energy, yet they can be charged and discharged much faster than batteries. This makes them ideal for applications requiring rapid bursts of power.

The operation of keräyskondensaattoreiden relies on the principle of electrostatic charge storage. Unlike batteries that store energy through chemical reactions, supercapacitors store energy physically by accumulating ions on the surface of porous electrodes. This non-electrochemical process contributes to their long cycle life, as they can withstand hundreds of thousands or even millions of charge-discharge cycles without significant degradation.

Key advantages of keräyskondensaattoreiden include their high power density, enabling quick energy delivery, and their ability to operate efficiently in a wide temperature range. They also possess a relatively low energy density compared to batteries, meaning they store less energy for a given size or weight. However, their rapid charge and discharge capabilities, coupled with their longevity, make them suitable for applications such as backup power for memory and microcontrollers, regenerative braking systems in vehicles, and as power sources for portable electronic devices that require intermittent high power.