MIT engineers discover way to create efficient solar panels using lead recycled from car batteries


Nick Fetty | August 19, 2014
Old car batteries and other debris strewn across an empty lot in El Paso, Texas. (Paul Garland/Flickr)
Old car batteries and other debris strewn across an empty lot in El Paso, Texas. (Paul Garland/Flickr)

Engineers at MIT have discovered a way to recycle parts from old car batteries and turn them into “long-lasting, low-cost solar panels.”

Scientists have recently discovered new potential for a material known as perovskite solar cells which can be harvested using lead from old car batteries. These cells have shown 19 percent efficiency in converting the sun’s energy into usable electricity and the lead from just one car battery can produce enough solar panels to power 30 homes.

Not only is this new method creating renewable energy but it also serves as a way to recycle lead which can have detrimental effects on entire ecosystems without proper disposal. Lead can also be recycled from an old solar panel and be used to create a new one. The report added that “photovoltaic performance of the PSCs (perovskite solar cells) synthesized by each route is the same, which demonstrates that device quality does not suffer from the materials sourced from spent car batteries. ”

Currently about 90 percent of the lead extracted from old batteries is used to create new batteries but an estimated 200 million lead-acid batteries are expected to be retired in coming years as the more efficient lithium-ion batteries are likely to take over the market.

The use of solar power in Iowa is expected to rise in the coming years because of recent reductions in the installation and cost of solar technology

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