SunHydrogen Inc (HYSR)

[RPR]

I have seen it before in EPFL PR my post#4526. First time seen in HYSR 1.25v PR.

http://phys.org/news/2014-09-harvesting-hydrogen-fuel-sun-earth-abundant.html
"A voltage of 1.7 V or more is required for water electrolysis to occur and to obtain exploitable gases," explained Jingshan Luo. To get these numbers, three or more silicon cells are needed, whereas just two perovskite cells are enough. As a result, there is more efficiency with respect to the surface of the light absorbers required. "This is the first time we have been able to get hydrogen through electrolysis with only two cells!" Luo adds.

From HYSR 1.25v PR.
http://hypersolar.com/news_detail.php?id=65
However, in real world systems, 1.5 V or more is generally needed because of the low reaction kinetics.

Probably this may answer Kahoona1962(post# 4913) question of how much hydrogen is produced per cell. I think for commercialization we need at least 1.5v and more is better for higher production ratio.

IMO commercialization & sales can begin at 1.5v , upgrades can come later with >1.5v. does it makes sense?