Researchers at Pacific Northwest National Laboratory (PNNL) claim to have increased the conductivity of copper wire by about five percent. That may seem like a small amount, but it could make a big difference in motor efficiency. Higher conductivity would also mean that less copper would be needed for the same efficiency, which could reduce the weight and volume of various components that power EVs.
The laboratory teamed with GM to test the souped-up copper wire in motor components. As part of a cost-shared research project, the team says it validated the new copper composite’s increased conductivity and also found that it has higher ductility—the ability to stretch farther before it breaks.
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