Green Hydrogen Production Directly from Seawater with No Corrosion Using a Nonmetallic Electrode: A Novel Solution and a Proof of Concept

Table 1

Dimensions, porosity, and permeability for the nonmetallic rock sample electrodes.

Sample no.	Sample diameter (mm)	Sample length (mm)	Porosity (%)	Permeability (md)
1	25.18	74.04	28.99%	804.75
2	25.09	76.56	25.07%	43.57
3	25.08	75.02	21.48%	61.85
4	25.04	74.56	27.07%	529.93
5	37.74	71.83	24.14%	428.42
6	37.73	73.22	23.63%	182.42
7	37.74	74.46	20.65%	216.84