High-performance fuel cell bipolar plate base material and preparation method thereof

The invention discloses a high-performance fuel cell bipolar plate base material. The base material comprises the following components in percentage by weight: 15-30% of graphite powder, 22-52% of phenolic resin, 15-20% of graphene, 10-15% of modified graphene, 2-5% of a curing agent, 1-3% of an accelerant and 2-5% of a release agent, the invention also discloses a preparation method, which comprises the following steps: a, stirring and mixing pure water, a silane coupling agent, absolute ethyl alcohol and graphene to obtain modified graphene; b, stirring and mixing graphite powder, graphene and modified graphene to obtain a mixture A; c, phenolic resin is added into the internal mixer, pressurized internal mixing is conducted, and a mixture B is obtained; d, after banburying and discharging the mixture B, rolling, crushing and grinding to obtain powder C; e, stirring and mixing the powder C, a curing agent, an accelerant and a release agent, and granulating; and f, carrying out die-casting molding to obtain