German engineers at Karlsruhe Institute of Technology copy nature to speed the manufacture of lithium-ion batteries used in electric vehicles. By employing the same physical-chemical process that transports water in trees, the researchers say they have solved a problem conventional production methods encounter: getting enough electrolyte into the huge number of micrometer-sized pores in battery electrodes. “The pores have to be filled completely with electrolyte in order to work ...

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