Open AccessHigh-Efficient Hydrogen Generation Study by a Reverse Tailing Pulsed-Plasma Water Dissociation Applying Wet Electrode Method
Author(s) -
Naohiro Shimizu,
Ranjit R. Borude,
Reiko Tanaka,
Osamu Oda,
Hiroki Hosoe,
Satoshi Inou,
Yousuke Inoue,
Masaru Hori
Publication year - 2022
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ac6a1b
Subject(s) - electrode , anode , dissociation (chemistry) , analytical chemistry (journal) , plasma , ceramic , porosity , nonthermal plasma , pulsed power , hydrogen , materials science , cathode , chemistry , diffusion , composite material , thermodynamics , voltage , chromatography , electrical engineering , physics , organic chemistry , quantum mechanics , engineering
A pulsed power water dissociation method applying a couple of a porous-ceramic electrode, wetted with water, and an opposite dry electrode in atmospheric air was studied. The basic concept for this study is composed of “pulsed power activation of high-density water molecules at the porous electrode creepage” and “subsequent non-thermal equilibrium plasma reactions of these molecules diffusing into the low-density molecule air”. 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 1011 V/s level is applied. To examine the electric polarity contribution, four kinds of reactors were studied. H2 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 H2 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-density water molecules 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”.