This Can Store Solar Energy For 2 Decades | New Invention

Researchers from Sweden’s Chalmers University of Technology have designed an energy system that stores solar energy in liquid form for up to 2 decades and releases energy on demand. The system was designed using specially-developed molecules of carbon, hydrogen, and nitrogen.

When these are hit by sunlight, the atoms within the molecules are rearranged, turning them into an energy-rich isomer that’s stored in liquid form. Impressively, the researchers say their system stores energy in this liquid form for up to 18 years. It is then released using a special catalyst that returns the molecules to their original shape, releasing the stored energy as heat.

This means that we can use solar energy to produce electricity regardless of weather, time of day, season, or geographical location. It is also a closed system that can operate without causing carbon dioxide emissions.

With the help of scientists from China’s Shanghai Jiao Tong University, the Chalmers team has tested its device, called the Molecular Solar Thermal system (MOST), by connecting it to a thermoelectric generator, proving that it can produce electricity on-demand.

The Chalmers team has been working on its technology for more than a decade, and it believes it may soon be a viable option for charging low-power electronics devices.

The proof of concept’s current output is reported to be up to 0.1 nW (power output per unit volume up to 1.3 W m−3), which might be quite small but the scientists see big potential in their MOST system, which could address the intermittent nature of solar energy by storing it for months or years at a time and allow it to be tapped into on-demand.

“This is a radically new way of generating electricity from solar energy,” said research leader Kasper Moth-Poulsen, Professor at the Department of Chemistry and Chemical Engineering at Chalmers.

“It means that we can use solar energy to produce electricity regardless of weather, time of day, season, or geographical location. It is a closed system that can operate without causing carbon dioxide emissions.”

Having now shown that the system can be used to produce electricity, the team is focusing on improving its performance, while working toward an affordable commercial solution for charging gadgets and heating homes.

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