Chemspy chemistry news and views

Ancient red dye powers new 'green' battery: Chemists use plant extract in eco-friendly, sustainable lithium-ion battery - Rose madder -- a natural plant dye once prized throughout the Old World to make fiery red textiles -- has found a second life as the basis for a new "green" battery. Chemists have developed a non-toxic and sustainable lithium-ion battery powered by purpurin, a dye extracted from the roots of the madder plant.(10.1038/srep00960)

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