Apparatus and method for the electrolysis of water employing a s

Details Apparatus and method for the electrolysis of water employing a s Apparatus and method for the electrolysis of water employing a s

1993-03-29

1993-12-21

Valentine, Donald R.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204262, 204266, 204296, 204282, C25B 106, C25B 110, C25B 900, C25B 1308

Patent

active

052718131

ABSTRACT:
An electrolyzer is provided for electrolyzing water into its constituent elements, namely oxygen and hydrogen gas. The electrolyzer includes a vessel in which a sulfonated solid polymer electrolyte is situated. The sulfonated solid polymer electrolyte is selected from a group including sulfonated polyetheretherketone (SPEEK), sulfonated polyethersulfone (SPES), sulfonated polybenzimidazole (SPBI), sulfonated polyphenylquinoxaline (SPPQ) and sulfonated fluorinated polyimide (SFPI). The electrolyzer also includes anode and cathode electrodes situated on the electrolyte. A direct current (DC) power supply is coupled to said anode and cathode electrodes to drive the reaction. A heater heats the electrolyte and a water supply is connected to one of said cathode and anode electrodes. The resultant oxygen and hydrogen are collected at the respective electrodes. The solid polymer electrolyte desirably operates with relatively high ionic conductivity at high temperatures without loss of structural integrity. In this manner, a high rate of gas output is achieved with substantially lower drive voltage and energy consumption.

REFERENCES:
patent: 3870616 (1975-03-01), Dempsey et al.
patent: 4707228 (1987-11-01), Rubak
patent: 4950371 (1990-08-01), McElroy
patent: 4978438 (1990-12-01), Shimamune et al.
patent: 5203972 (1993-04-01), Shimamune et al.

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