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Scientists Combine Solar And Battery Tech In One Device

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Perovskite-silicon tandem cells integrated with chemical battery components could generate, store, and redeliver renewable electricity in one device

Solar cell researchers at the University of Sydney and University of New South Wales working with chemists at the University of Wisconsin-Madison in the United States have created a highly efficient and long-lasting solar-flow battery, which is a way to generate, store, and redeliver renewable electricity from the sun in one device.

Anita Ho-Baillie, a professor at the University of Sydney Nano Institute and postdoctoral researcher Jianghui Zheng at UNSW designed and fabricated the perovskite-silicon tandem solar cells so that they can maintain their performance and stability while withstanding the chemicals in the flow battery.



The solar-flow battery achieved a new record efficiency of 20 percent conversion of energy from the sun. This is 40 percent more efficient than the previous record for solar-flow batteries, which were also developed in the University of Wisconsin Jin lab where lead author, PhD student Wenjie Li, is based. This research could potentially yield a new way to harvest, store and use the sun's energy for solar home systems.

This work is published in the journal Nature Materials and is a collaboration between UW-Madison, Utah State University, King Abdullah University of Science and Technology in Saudi Arabia, the City University of Hong Kong, UNSW and the University of Sydney.

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