SIGRACELL® Bipolar Plates and End Plates

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Resistance to chemicals meets high conductivity

The main features that distinguish expanded natural graphite are exceptional resistance to chemicals and good electrical conductivity.

Together with high-grade fluoropolymers, our thin, high-density SIGRACELL bipolar plates can be used for a broad spectrum of applications.

Thanks to their great resistance to corrosion, they are ideally suited for the demanding cell chemistry in battery systems.

Typical properties	Extruded BPP	Injection molded BPP	Hot-pressed BPP	SGL Carbon bipolar foil	SGL Carbon graphite BPP
Explanation	Polymer composite	Polymer composite	Polymer composite	Expanded graphite based bipolar foils SIGRACELL TF6 and PV15	Machined extruded graphite - resin impregnated
Process ability	+++	++	+	+++	-
Electrical conductivity	○	+	++	++	+++
Surface tolerance	-	○	-	++	++
Costs	+++	+	○	○	-