In Bengaluru, researchers at the Center for Nano and Soft Matter have developed a unique transparent battery that can turn glass windows into affordable energy storage devices. This high-performance water-transparent battery with color modulation capability is 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 in the room as they go dark blue for privacy.
The transparent battery design uses aluminum ion battery technology, integrating a cathode material composed of electrochromic tungsten oxide (VO3) and aluminum as a thickness-optimized anode. Lead scientist Dr. Ashutosh Kumar Singh explained that these transparent energy storage devices have significant potential for integration into smart window applications, offering energy storage capabilities with tunable transparency. The use of aqueous electrolytes makes them cost-effective, high-performance and safe, making them ideal for use in modern infrastructures.
Dr. Singh also noted that the commercialization of this technology would require minimal investment and that they are open to collaboration with potential smart glass manufacturers. Research on this transparent battery was recently published in the journal ACS Applied Energy Materials. This innovation has the potential to revolutionize smart window technology and provide energy storage capabilities without compromising on transparency.