METHOD OF PRODUCING BIPOLAR PLATES BASED ON POLYMER COMPOSITE MATERIAL Russian patent published in 2024 - IPC H01M8/02 H01M8/10 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering, namely the production of electrical products, in particular bipolar plates for fuel cells with a solid electrolyte based on a polymer composite material – thermally expanded graphite, and a thermoplastic or thermosetting polyimide binder, and can be used in automotive industry, shipbuilding, power, chemical and aviation equipment as anodes, cathodes for chemical current sources as a material with high corrosion resistance, heat and electrical conductivity. Thermally expanded graphite with degree of expansion from 5 to 100 g/dm³ is used as heat- and electroconductive filler, and as binder thermoplastic and thermosetting polyimide binders in the following ratio: thermally expanded graphite 25-80% by weight; polyimide binder – balance.

EFFECT: obtained material can be moulded into articles with a complex geometrical profile and does not require additional machining; simplicity of the technology enables to reduce production costs and scale the number of articles produced.

1 cl, 12 ex