New Method Discovered for Storing Energy in Glass Windows, Say Researchers

Transparent Batteries Bring Smart Windows to Life: A Look at the Future of Energy-Storing Glass

Smart windows could soon become even more efficient thanks to a new aqueous transparent battery developed by researchers at CeNS. The battery, which is affordable and high-performance, can be used to transform glass windows into energy-storing devices with color modulation capabilities.

According to the Department of Science and Technology, the windows remain transparent during the day, allowing sunlight into the room while simultaneously functioning as an energy storage system. At night, the stored energy can power electronic devices within the room, and the battery transitions to a dark blue state for privacy.

The transparent battery features a distinctive design using aluminium-ion battery technology. It integrates a cathode material composed of electro-chromic tungsten oxide and aluminium as the anode, showcasing the charging and discharging process through visible transitions. Dr. Ashutosh Kumar Singh, the lead scientist, said that these transparent energy storage device technologies hold significant potential for integration into smart window applications, offering energy storage capabilities with adaptive transparency.

The use of aqueous electrolytes contributes to the cost-effectiveness, high performance, and elevated safety levels of the battery, making it well-suited for use in smart windows and energy storage applications within modern infrastructures. Dr. Singh mentioned that their work had been recently published in the journal ACS Applied Energy Materials and that their findings hold potential for collaboration with smart glass manufacturers for commercialization efforts.

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