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Solar road stud with super capacitor

In the past, our solar road studs used more nickel-metal hydride batteries and lithium batteries, but today, we have made a new breakthrough in technology. Solar road studs with embedded legs with relatively large internal space can be used as supercapacitors. The battery has a working time of more than 60 hours for constant light and 110 hours for flashing, and a lifespan of 10 years.


What is a supercapacitor?
Supercapacitor (Supercapacitor), also known as electrochemical capacitor, supercapacitor, or supercapacitor battery, is a high-capacity capacitor with high energy density and power density. It is a device capable of storing and releasing large amounts of electrical charge, somewhere between a traditional capacitor and a chemical battery.
Supercapacitors use the physical adsorption of charges between the positive and negative plates and the electrochemical double-layer effect to store energy. The dielectric between the positive and negative plates separates the two electrodes, and when a voltage is applied, the positive and negative charges are adsorbed on the surface of the electrodes respectively, forming a charge double layer. This double-layer storage mechanism allows supercapacitors to store and release charge at a very fast rate.
Compared with traditional chemical batteries, supercapacitors have the following characteristics:
1. High power density: Supercapacitors can quickly store and release a large amount of charge, suitable for applications with high power requirements, such as electric vehicle acceleration, peak balance of power systems, etc.
2. Long cycle life: The cycle life of supercapacitors is usually longer than that of chemical batteries, and can be charged and discharged hundreds of thousands of times without loss of performance.
3. Fast charging and discharging speed: Due to the characteristics of the charge storage mechanism, supercapacitors have very fast charging and discharging speeds, and can complete the charging and discharging process within a few seconds.
4. Low energy density: Compared to chemical batteries, the energy density of supercapacitors is low, which means that they cannot store as much energy as chemical batteries.
Supercapacitors are widely used in many fields, including energy recovery systems, auxiliary power for electric vehicles, backup power supplies for electronic equipment, and energy storage devices for power systems. They are often used together with chemical batteries to take full advantage of each other for efficient energy storage and utilization.
What is the difference between supercapacitors and other batteries?
There are several main differences between supercapacitors (Supercapacitor) and other batteries (such as lithium-ion batteries, lead-acid batteries, etc.):
1. Energy storage mechanism: Supercapacitors use physical adsorption and electrochemical double-layer effects to store charge, while other batteries store and release energy through chemical reactions. The energy storage mechanism of supercapacitors allows them to be charged and discharged very quickly, whereas other batteries are slower.
2. Energy density and power density: Energy density refers to the energy stored per unit volume or mass, and power density refers to the energy released per unit time. Compared with other batteries, supercapacitors have a low energy density and cannot store a large amount of energy, but have a high power density and can quickly release a large amount of charge.
3. Cycle life: Supercapacitors usually have a longer cycle life and can be charged and discharged hundreds of thousands of times without loss of performance. Other batteries, such as lithium-ion batteries, gradually lose capacity over cycles and need to be replaced more frequently.
4. Charging speed: The supercapacitor has a very fast charging speed and can be charged within a few seconds. In contrast, other batteries typically require longer charging times.
5. Energy density and cost: Compared with other batteries, the energy density of supercapacitors is lower, which means that the volume and weight of supercapacitors with the same capacity are usually larger. In addition, supercapacitors are generally expensive to manufacture.
In summary, supercapacitors have advantages in fast charging and discharging, high power demand, and long cycle life, and are suitable for applications that require high-power instantaneous output and frequent charging and discharging. Other batteries are more suitable for applications that need to store a lot of energy and use it for a long time. Typically, supercapacitors and other batteries complement each other for efficient energy storage and utilization.