Dopamine-grafted heparin as an additive to the commercialized carboxymethyl cellulose/styrene-butadiene rubber binder for practical use of SiO_x/graphite composite anode.

ABSTRACT: Graphite is used commercially as the active material in lithium ion batteries, frequently as part of a graphite/SiO_x composite. Graphite is used in conjunction with SiO_x to overcome the limited energy density of graphite, and to lessen the adverse effects of volume expansion of Si. However, electrodes based on graphite/SiO_x composites can be made with only 3-5 wt % SiO_x because of the increased failure of electrodes with higher SiO_x contents. Here, we developed a new polymer binder, by combining dopamine-grafted heparin with the commercial binder carboxymethyl cellulose (CMC)/styrene butadiene rubber (SBR), in order to more effectively hold the SiO_x particles together and prevent disintegration of the electrode during chargi

SUBMITTER: Lee K 

PROVIDER: S-EPMC6063964 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature