A novel method of hydrogen generation by water electrolysis using an ultra-short-pulse power supply

Shimizu, Naohiro; Hotta, Souzaburo; Sekiya, Takayuki; Oda, Osamu

doi:10.1007/s10800-005-9090-y

Cited by 72 publications

(27 citation statements)

References 3 publications

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“…Thus the falling edge of the pulse is faster (~5ns) than planar electrode experiments as used by Shimizu et al (2006) and Vanags et al (2011). During the falling edge, a not wholly understood ionisation wave is observed, with propagation speeds approaching 5000 km/s.…”

Section: Plasma Electrolysis Literaturementioning

confidence: 88%

“…The work was particularly inconclusive and incomplete. Shimizu et al (2006) claim to present the first examination of short pulses applied to electrolysis. Their central argument is that if a sufficiently short voltage pulse is applied, neither the electric double layer nor the diffusion layer can fully or stably form, thus the losses from diffusion limitations are avoided.…”

Section: Pulsed Electrolysismentioning

confidence: 99%

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Review of pulsed power for efficient hydrogen production

Monk

Watson

2016

International Journal of Hydrogen Energy

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Pulsed power applied to electrolysis offers a potential method for efficient hydrogen production which has not been comprehensively studied to date. Pulsed and plasma electrolysis are introduced and previous research assessed. Electrolysis use in potential space or aerospace applications is substantially weight and volume sensitive. Pulsed plasma electrolysis is able to far exceed the Faradaic limit on electrolysis at very high surface current densities presenting the opportunity to reduce electrode mass and volume. Pulse generation technology is introduced and challenges inherent in application to electrolysis outlined.

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Section: Plasma Electrolysis Literaturementioning

confidence: 88%

Section: Pulsed Electrolysismentioning

confidence: 99%

Review of pulsed power for efficient hydrogen production

Monk

Watson

2016

International Journal of Hydrogen Energy

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“…The past literature on the pulse-activated hydrogen electrolysis presented the advantage of activation frequency that led more efficiency [8]. So, the later researches explained the frequency response behavior of the pulse-activated to the influence of natural frequency using the electric circuit transfer model and set the activation frequency in range of kilohertz and over [2], [3].…”

Section: Pulse Activationmentioning

confidence: 99%

The Behaviour of Gas Bubble during Rest Period of Pulse-Activated Electrolysis Hydrogen Production

2016

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Abstract. The pulse-activated electrolyzer has been developed and used for several years. With the capability of enhancing the efficiency of an electrolytic process and easy operation, this technique becomes an interesting process for hydrogen production. Unfortunately during electrolytic reaction, the creation of bubbles becomes a reaction inhibitor and consumes energy. This paper aims to study the proper rest period that gives the bubble free rise-off the solution without additional bubble created. The mathematical method and acoustic emission method were used for investigation of bubble's rising velocity. The result shows that the variation of rest period on pulse-activated makes production efficiency enhanced. For the practicality of use and set control parameters, duty cycle and frequency were demonstrated instead of rest period.

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“…Electrolysis of water occurs when a relatively high voltage (> 1.6 V) is applied between the cathode and anode (Shaaban, 1994;Shimizu et al, 2005). The water molecules are decomposed into hydrogen and oxygen gases.…”

Section: Introductionmentioning

confidence: 99%