EXFOLIATED GRAPHITE SEPARATOR BASED ELECTROLYZER FOR HYDROGEN GENERATION

摘要

The present invention relates to an electrolyzer having separator plates made from exfoliated graphite as reactant flow field plate. The invention also includes a process of generating hydrogen using exfoliated graphite plate as reactant flow field plate in depolarizer assisted PEM water electrolyzer under pulse DC operation. It comprises of a plurality of fabricated Membrane Electrode Assembly (MEA)(I), placed inbetween anode and cathode separator (3), current collector(4) separated by gaskets1 insulator plates (7). All these cell components are assembled together with anode & cathode end plates (6). Here the separator plates act as flow field plates (3) which is made up of embossed exfoliated graphite material. The electrolyser incorporating the EFG plates afford cost reduction and efficient for hydrogen generation. This invention is the first of its kind to have used carbon based separator plates in electrolysis of depolarized water without the issue of carbon corrosion normally encountered in electrolysers operating on water.