A polymerized vinylene carbonate anode binder enhances performance of lithium-ion batteries

• A polymerized vinylene carbonate (polyVC) is used as binder.
• PolyVC shows better cell performance than PVDF.
• PolyVC promotes the formation of stable SEI.
• Propylene carbonate is successfully used in polyVC-based cell.

We investigated the use of polymerized vinylene carbonate (polyVC) as a binder for graphite anodes in lithium-ion cells. It functions not only of a traditional binder, but also plays an important role in surface stabilization of graphite in propylene carbonate (PC)-based electrolytes. In an electrolyte with PC content as high as 30 wt%, the polyVC binder enhanced battery performance, with a reversible capacity of ∼170 mAh g−1 at a delithiation rate of 1 C, whereas a comparable graphite cell fabricated with a polyvinylidene fluoride (PVDF) binder failed to cycle.

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