ALGINATE-CONTAINING COMPOSITIONS FOR USE IN BATTERY APPLICATIONS

摘要

A silicon-based anode comprises an alginate-containing binder. The many carboxy groups of alginate bind to a surface of silicon, creating strong, rigid hydrogen bonds that withstand battery cycling. The alginate-containing binder provides good performance to the anode by (1) improving the capacity of the anode in comparison to other commercially-available binders, (2) improving Columbonic efficiency during charging and discharging cycles, and (3) improving stability during charging and discharging cycles.

主权项

1. A battery electrode comprising:
a conductive metal substrate; and an electrode active material comprising active particles, wherein each of the active particles is a silicon-carbon composite, dispersed in a binder coupled to the conductive metal substrate, wherein the binder comprises an alginate material, wherein the electrode active material is substantially homogenously dispersed in the alginate material.