Compared with graphite, titanium has excellent corrosion resistance, low initial resistivity, good mechanical strength and light weight. It is currently the best plate material for PEMWE. Usually, precious metals or platinum group metals are plated on the titanium surface to meet the durability and performance requirements under high pressure and oxidizing environments.

Titanium bipolar plates are mainly made by etching process.

The etching process of titanium bipolar plates is cutting - cutting - cleaning - coating - drying - exposure - development - etching - stripping - testing - shipment.