New conductive polymer addresses volumetric change issue with silicon anodes for Li-ion batteries; high-capacity and longer cycle life reported
Green Car Congress
SEPTEMBER 23, 2011
At left, a traditional approach combines Si (blue spheres) with a polymer binder (light brown) plus carbon (dark brown spheres). At right, the new conductive polymer (purple) continues to bind tightly to the Si particles despite repeated swelling and shrinking. 1 in Si after 650 cycles without any conductive additive. —Gao Liu.
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