samazon writes: "Researchers Grzegorz Milczarek from Poznan University of Technology in Poland and Olle Inganäs from Linköping University in Sweden, have combined a polymer with a waste material from the paper and pulp industry to create a new kind of battery cathode, which today are mostly made from nonrenewable metals such as lithium or cobalt. Specifically, Milczarek and Inganäs used lignin, an organic substance binding the cells, fibers and vessels that make up wood."
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