These plates are a crucial component to fuel cell stacks.
Key Facts About Bipolar Plates
Advanced Chemical Etching (ACE) has developed a process of producing plates stress and burr-free at an economical price.
The photo etching process removes metal from both sides of the plates simultaneously so complex channels can be etched on both sides of the bipolar plates.
Any Shape or Size of Channels
Designers can vary the shape and size of channels and incorporate headers, collectors and port features without additional cost.
Low Cost & Adaptable
Digital tooling, which is low-cost and quick to produce, can be adapted easily and inexpensively to optimise designs. Unlike CNC machining, stamping and hydroforming, chemical etching imparts no mechanical or thermal stress on the plates, which can compromise stack bonding.
Benefits of the etching Process
Low set-up costs and fast lead times make etching a go-to process in batch sizes of one to multiple millions.
The tooling for etching is digital, low-cost and can be modified quickly.
No heat or force is used when etching so mechanical properties remain unaltered and parts are free from stresses and burrs.
As component features are etched at the same time, part/feature complexity is not an issue.
Flat blanks etched then diffusion bonded or brazed.