Using discarded car batteries to make advanced solar PV cells

MIT researchers have developed a simple procedure using lead recovered from discarded lead-acid car batteries to make a new type of crystalline photovoltaic material called perovskites - a practice that could benefit both the environment and human health. Much attention in the solar community is now focused on an 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 highly efficient.

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