New method discovered for storing energy in glass windows, say researchers

Smart Windows Transform into Energy Storage Devices with Innovative Transparent Battery Technology

A team of scientists at the Centre for Nano and Soft Matter Sciences in Bengaluru have developed a unique battery that can turn glass windows into affordable energy storage devices. The high-performance aqueous transparent battery has colour modulation capabilities, making it ideal for use in smart windows.

According to the Department of Science and Technology, these windows remain transparent during the day while storing energy, and at night, the stored energy can power electronic devices within the room while transitioning to a dark blue state for privacy. The unique design of the transparent battery uses aluminium-ion battery technology, integrating a cathode material composed of thickness-optimized electro-chromic tungsten oxide (WO3) and aluminium as the anode.

Dr. Ashutosh Kumar Singh, lead scientist on the project, explained that these transparent energy storage devices have significant potential for integration into smart window applications, offering energy storage capabilities with adaptive transparency. The use of aqueous electrolytes makes them cost-effective, high-performing, and safe, making them ideal for use in modern infrastructures.

Commercialisation of this technology would require minimal investment and Dr. Singh mentioned that they are open to collaborating with potential smart glass manufacturers. The research on this transparent battery was recently published in the journal ACS Applied Energy Materials.

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