Method for fabricating polar plate of flexible plastic graphite composite

A method for fabricating a polar plate of a plastic graphite composite comprising steps of:

• (a) ball-milling a conductive powder composition with high carbon (>98%), less than 5 weight percent (wt %) of a flame retardant, and low ash (<1%) for at least 0.5 hours (hr) at a speed of at least 200 rounds per minute (rpm) to form a conductive powder;
• (b) mixing the conductive powder, a thermoplastic/thermosetting resin adhesive composition, and a solvent by stirring at least 1 hr to form a mixture;
• (c) directly and repeatedly calendering said mixture into a rigid plastic sheet by rolling/squeezing and obtaining a requested thickness of said plastic sheet;
• (d) depositing said plastic sheet to process volatilization under a low-temperature vacuum to remove said solvent;
• (e) obtaining a composite plastic plate through repeatedly calendering said plastic sheet to a requested thickness with at least one conductive woven iron fabric supporting member stacked into layers consisting of an upper layer of the plastic sheet together with a lower layer of the plastic sheet and a plurality of overlapping layers of the plastic sheet alternating with the conductive woven iron fabric support members to obtain at least one layer of a plastic composite plate having the plastic sheets and the at least one woven iron fabric supporting member;
• and
• (f) graphic-shaping said plastic composite plate with required heat and pressure according to a requested graph to obtain a finished shaped plate.