electrode surface area major contributor to h2 production?

[motorsportssuppl]

Hi all,
I have had a few thoughts and questions. On a electroysis cell with 2 plates 6x6 at 1.23v @ 1 amp ( if possible to draw that amount of current) means that my procution is 100% efficient. According to faraday formulas at that current draw I would produce apprx 0.89 lpm of hydrogen . So If the surface area is a major contributor to production if I doubled the size of my electrode plates up to 12x12 and kept the voltage at 1.23v would I draw more current thus prodcue more gas? Another thought, Is this why Mr. Dingel uses a honeycomb type shape as an electrode to fit in a smaller volume but cover more surface area? I know these are very simple ideas and kindergarden questions to some of you but im new and am just wondering. Thanks for the input
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Jason