Solid-state EV batteries could further reduce carbon emissions, says climate group

An electric vehicle is seen charging in Manhattan, New York, U.S., December 7, 2021. REUTERS/Andrew Kelly

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LONDON, July 19 (Reuters) – Solid-state batteries could reduce the carbon footprint of electric vehicle (EV) batteries by 29% compared to today’s liquid lithium-ion batteries and could reduce it even further using sustainably sourced materials, a campaign group has said. tuesday.

Based on a comparison between one of the most promising solid-state batteries and lithium-ion technology and the use of sustainable lithium sources, a battery’s carbon footprint could be reduced by up to 39%, said Transport and Environment (T&E).

The European climate group has called for incentives to reduce the carbon footprint in new electric vehicle battery regulations being finalized by the European Parliament and European Union member states.

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“Electric vehicles are already much better for the planet,” Cecilia Mattea, clean vehicles manager at T&E, said in a statement. “But solid-state technology is a game changer because their higher energy density means far fewer materials, and therefore far fewer emissions, are needed to make them.”

Solid-state batteries, which use solid ceramic material instead of liquid electrolytes to carry electric current, could store more energy, recharge faster and provide greater safety than liquid lithium-ion batteries.

Automakers including Ford (FN) and BMW (BMWG.DE) are working with suppliers to develop solid-state batteries and they should start appearing in electric vehicles in the second half of this decade.

Solid-state batteries require less graphite and cobalt, a metal primarily produced in the Democratic Republic of Congo, which has a large informal sector with a legacy of hazardous labor practices and child labor.

T&E said new lithium mining methods such as geothermal wells emit far less CO2 than more commonly used sources, including hard rock lithium mined in Australia and refined in China.

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Reporting by Nick Carey; Editing by Edmund Blair

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