On 22-Apr-17 12:47 PM, Chris Hogg wrote:
....
Splitting water only requires 1.23v in theory. If it's low energy, as
opposed to low voltage, you only get low amounts of H2 and O2. And
with the usual systematic energy losses, you'll get even lower amounts
of energy back when you recombine them. The idea that you can split
water, recombine the products, and get more energy out than you put
in, is pure fantasy, like the thinking on any other perpetual motion
machine.


As they are working on ways of reducing the cost of producing hydrogen,
they have been working on getting the same amount while using less
energy. Both claim to have made breakthroughs in doing that. As these
are processes with commercial applications, no details have been given,
but I assume that the use of catalysts implies that there is some
chemical reaction involved as well as pure electrolysis.

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Colin Bignell