Supercapacitors: store energy quickly

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Supercapacitors: store energy quickly
Supercapacitors: store energy quickly

Save energy on the fly

Supercapacitors can rapidly absorb and release large amounts of electrical energy. How the system works can be made visible with simple experiments.

Although Hermann von Helmholtz (1821–1894) laid the foundation for supercapacitors as energy storage almost 200 years ago, they led a shadowy existence for a long time. This is partly due to the fact that lithium-ion batteries are primarily used in mobile end devices. They have a high energy density and can therefore be accommodated in a space-saving manner.

In certain areas, supercapacitors offer clear advantages over the dominant lithium-ion technology: They do not require expensive metal oxides in the electrode materials, are significantly more durable and can be charged and discharged much more quickly than rechargeable batteries. So if a lot of electrical power has to be stored or provided in a short time, supercapacitors are the perfect candidates. That is why they are used in numerous areas today: Applications: from stationary energy back-up systems to mobile applications such as brake force recovery in buses and trains or the acceleration of hybrid and electric vehicles …

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