A method for implementing a hydrogen fuel, sustainable, closed clean energy cycle using solar powered electrolysis by means of an electrolytic cell capable of performing electrolysis on three types of molten salts individually including sodium hydroxide (NaOH), sodium chloride (NaCl), sodium carbonate (Na2CO3) or on a mixture of sodium hydroxide (NaOH) and sodium chloride (NaCl), including selective electrolysis between sodium hydroxide (NaOH) and sodium chloride (NaCl) at temperatures ranging between 1223.15 K (950° C.) to 1323.15 K (1050° C.), well above the boiling point temperature of sodium (Na) metal, comprising the steps of:
- generating hydrogen (H2) fuel on demand in a hydrogen generation apparatus using controlled chemical reactions between either ordinary salinated (sea) or desalinated (fresh) water (H2O) and sodium (Na) metal or sodium hydride (NaH) reactants wherein said controlled chemical reactions produce hydrogen (H2) fuel and chemical byproduct wherein said chemical byproduct comprises pure sodium hydroxide (NaOH) or sodium hydroxide (NaOH) mixed with sea salt and wherein said sea salt comprises sodium chloride (NaCl);
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- recovering said chemical byproduct from said hydrogen generation apparatus and transporting said chemical byproduct including said pure sodium hydroxide (NaOH) or said mixture of sodium hydroxide (NaOH) and sodium chloride (NaCl) to a self-contained solar powered electrolytic sodium (Na) metal production plant wherein said chemical byproduct is loaded into said electrolytic cell operating within said self-contained solar powered electrolytic sodium (Na) metal production plant;
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- electrolyzing said pure sodium hydroxide (NaOH) to recover said sodium (Na) metal;
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- deciding that if chlorine (Cl2) production is needed electrolyzing said mixture of sodium hydroxide (NaOH) and sodium chloride (NaCl) simultaneously to produce said sodium (Na) metal at said electrolytic cell cathode and steam (H2O), oxygen (O2) and chlorine (Cl2) at said electrolytic cell anode;
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- deciding that if chlorine (Cl2) production is not needed electrolyzing said mixture of sodium hydroxide (NaOH) and sodium chloride (NaCl) selectively to electrolyze only said sodium hydroxide (NaOH) wherein said sodium (Na) metal is produced at said electrolytic cell cathode and steam (H2O) and oxygen (O2) are produced at said electrolytic cell anode and wherein said sodium chloride (NaCl) remains unelectrolyzed;
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- deciding that if said sodium (Na) metal is not needed from said sodium chloride (NaCl) remaining unelectrolyzed recovering and mixing with seawater said sodium chloride (NaCl) remaining unelectrolyzed to produce concentrated brine solution for use as reactant in said hydrogen generation apparatus;
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- deciding that if said sodium (Na) metal is needed from said sodium chloride (NaCl) remaining unelectrolyzed without chlorine (Cl2) production transporting said sodium chloride (NaCl) remaining unelectrolyzed to a Solvay plant wherein said sodium chloride (NaCl) remaining unelectrolyzed and calcium carbonate (CaCO3) undergo conversion to sodium carbonate (Na2CO3) product and calcium chloride (CaCl2) byproduct;
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- electrolyzing said sodium carbonate (Na2CO3) product in said electrolytic cell to produce said sodium (Na) metal and carbon (C) at said electrolytic cell cathode and oxygen (O2) at said electrolytic cell anode;
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- transporting said sodium (Na) metal produced at said electrolytic cell cathode to a solar or biohydrogen plant wherein said sodium (Na) metal reacts with hydrogen (H2) to produce said sodium hydride (NaH) and wherein said sodium hydride (NaH) is used to generate said hydrogen (H2) fuel on demand in said hydrogen generation apparatus.