ZeroAvia has claimed a “record-breaking performance in testing of its high temperature proton exchange membrane systems” as it works on developing commercially-viable fuel cell technology for aviation. The UK company said its testing of a pressurised 20kW HTPEM stack power module “demonstrated a record 2.5 kW/kg specific power at the cell level”, a development it added would “pave the way for 3+ kW/kg system level densities in the next 24 months” and in turn help in creating fuel cell tech “critical to enable true zero-emission commercial flight”. The systems tested could be used to help power 40-80 seat aircraft, ZeroAvia

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