Now, World’s First Aqueous Solar Flow Battery That Saves 20% Energy

In a breakthrough discovery, researchers have designed solar cell and battery into a single device with more energy savings

Published: 02nd August 2015 01:02 PM  |   Last Updated: 02nd August 2015 01:02 PM   |  A+A-


WASHINGTON: In a breakthrough discovery, researchers have designed a solar cell and battery into a single device, which achieves more energy savings than a regular battery. Ohio State University’s Yiying Wu said that 20 percent energy saving comes from sunlight, which is captured by a unique solar panel on top of the battery.

The solar panel, on top of the battery, is now a solid sheet, rather than a mesh as in the previous design.

Another key difference comes from the use of a water-based electrolyte inside the battery as water circulates inside it. The new designs are called aqueous flow batteries.

Wu said that the truly important innovation here was that they have successfully demonstrated aqueous flow inside their solar battery.

It is the first aqueous flow battery with solar capability.

 Wu added that it was also totally compatible with current battery technology, very easy to integrate with existing technology, environmentally friendly and easy to maintain.

The new aqueous flow battery doesn't need air to function, so the solar panel is now a solid sheet.

In the study, the researchers compared the solar flow battery's performance to that of a typical lithium-iodine battery.

They charged and discharged the batteries 25 times. Each time, both batteries discharged around 3.3 volts.

The difference was that the solar flow battery could produce the same output with less charging. The typical battery had to be charged to 3.6 volts to discharge 3.3 volts. The solar flow battery was charged to only 2.9 volts, because the solar panel made up the difference. That's an energy savings of nearly 20 percent.

The project is still ongoing, and the solar flow design will undoubtedly evolve again as the researchers try to make the battery more efficient.

The study is published in journal of the American Chemical Society.


Disclaimer : We respect your thoughts and views! But we need to be judicious while moderating your comments. All the comments will be moderated by the editorial. Abstain from posting comments that are obscene, defamatory or inflammatory, and do not indulge in personal attacks. Try to avoid outside hyperlinks inside the comment. Help us delete comments that do not follow these guidelines.

The views expressed in comments published on are those of the comment writers alone. They do not represent the views or opinions of or its staff, nor do they represent the views or opinions of The New Indian Express Group, or any entity of, or affiliated with, The New Indian Express Group. reserves the right to take any or all comments down at any time.

flipboard facebook twitter whatsapp