High-Efficient Hydrogen Generation Study by a Reverse Tailing Pulsed-Plasma Water Dissociation Applying Wet Electrode Method

• Published in: Journal of the Electrochemical Society Vol. 169; no. 5; pp. 54507 - 54515
• Main Authors: Shimizu, Naohiro, Borude, Ranjit R., Tanaka, Reiko, Oda, Osamu, Hosoe, Hiroki, Ino, Satoshi, Inoue, Yosuke, Hori, Masaru
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.05.2022
• ISSN: 0013-4651; 1945-7111
• DOI: 10.1149/1945-7111/ac6a1b

A pulsed power water dissociation method applying a couple of a porous-ceramic electrode, wetted with water, and an opposite dry electrode in the atmospheric air was studied. The basic concept for this study is composed of “pulsed power activation of high water particle density liquid state at the porous electrode creepage” and “subsequent non-thermal equilibrium plasma reactions of these particles diffusing into the low water particle density gas state.” The deionized water (DIW) dissociation experiments were performed by applying the Reverse Tailing Pulse (RTP) method, where the forward pulse voltage of 10 kV level with the rising up ratio (dV/dt) of 10 11 V s −1 level is applied. To examine the electric polarity contribution, four kinds of reactors were studied. H 2 was detected in one reactor which is composed of an anode electrode made by porous-ceramic, wetted with DIW, and a cathode electrode made from a dry fine-ceramic. The H 2 generation efficiency, close to the theoretical prediction, was obtained when “Tanzanite” colored plasma was detected. These features may be due to the “RTP” reformation of the high water particle density liquid state in the wetted porous-electrode creepage and their continuous diffusion into the gas plasma space with the help of “Fick’s law of diffusion” and “pulsed ion wind.”