TOMORROW’S SOLAR COMING CLOSER
Solar energy from discarded car batteries; A new MIT development could benefit both the environment and human health.
Nancy W. Stauffer, December 22, 2015 (MIT News)
“MIT researchers have developed a simple procedure for making a promising type of solar cell using lead recovered from discarded lead-acid car batteries…As new lead-free car batteries come into use, old batteries would be sent to the solar industry rather than to landfills. And if production of this new, high-efficiency, low-cost solar cell takes off…manufacturers’ increased demand for lead could be met without additional lead mining and smelting. Laboratory experiments confirm that solar cells made with recycled lead work just as well as those made with high-purity, commercially available starting materials…Much attention in the solar community is now focused on [this] emerging class of crystalline photovoltaic materials called perovskites. The reasons are clear: The starting ingredients are abundant and easily processed at low temperatures, and the fabricated solar cells can be thin, lightweight, and flexible — ideal for applying to windows, building facades, and more. And they promise to be [15% to 20% efficient, which matches today’s silicon-based solar cells]…”click here for more