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New Solar-Charged Battery

Author: Source: Datetime: 2016-10-16 22:34:32
solar chargedA team of researchers at the University of Wisconsin-Madison produced a device that transfers solar energy directly into the electrolyte in a battery without the need for electrical power between them. University professor Song Jin and Saudi Arabia King Abdullah University of Science and Technology graduate student Li Wenjie and his colleagues to show the world how to do this.

A redox flow battery (RFB) is selected to store the energy in the tank of the liquid electrolyte. The RFB stores chemical energy in a liquid electrolyte rather than a solid-state electrode like lifepo4 battery pack. To discharge the RFB cells and power the grid in the evening, Jin said, "We simply connect the load to a different set of electrodes, allowing the charged electrolyte to flow through the device." This type of solar charging and discharging can use several Times, with a very good level of efficiency.

This solar rechargeable battery, developed at the University of Wisconsin-Madison's Songjin laboratory, directly stores the energy stored in the sun in the water tank.

The solar charger was developed at the University of Wisconsin-Madison, Song-Jin Lab, to transfer solar energy directly into a liquid battery and store it in a container in the lower right. During the discharge cycle, the current leaves the device through the top electrode.

Although redox flow batteries have been connected to solar cells and are commercially available, they are not used in the same manner. "We have a device that collects sunlight to release charge and change the redox state of the cell surface directly," says Li, the first author of the study. "We use a single device to convert solar energy and charge the battery." The design also provides many Advantages, such as the ability to charge the electrolyte directly, reduce costs and improve efficiency.

Now that the team has produced a successful design, they are looking for ways to further improve it, which will include searching for electrolytes with a large voltage difference, which is one of the limiting factors of this type of technology. As Jin says, "It's not just the efficiency of converting sunlight into electricity, but also the amount of energy that can be efficiently stored in the device."
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