To determine the effect of cross-linking in polymer binders on gravimetric capacity and retention in charge/discharge cycling of lithium-ion batteries containing silicon anodes, polymers with a varied chemiophysical characters have been studied as electrode binders. Here we report the utilization of cross-linked polyborosiloxanes and a boron-modified organosilicate as binders for nanoparticulate silicon-containing anodes for lithium-ion batteries. We show that highly cross-linked binders enable a large degree of capacity to be accessed and that capacity retention is greater when the electrodes are cycled in half cells. More extensive analysis of the boron-modified organosilicate is further explored.

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Published in Journal of The Electrochemical Society, v. 165, issue 5, p. A731-A735.

© The Author(s) 2018. Published by ECS.

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We thank the National Science Foundation for Award No. 1355438 (EPSCoR: Powering the Kentucky Bioeconomy for a Sustainable Future).