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Hydrogen battery for the home

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VK3DRB:
It sounds too good to be true, especially considering the energy density of hydrogen. Price is $US 26k for a home unit.

https://lavo.com.au/lavo-hydrogen-battery/

https://www.theage.com.au/environment/climate-change/world-s-first-domestic-hydrogen-battery-developed-by-australian-firm-20210120-p56vkd.html

ConKbot:
I'd agree the hydride cannisters look a tad small compared to the energy storage claims, but I'm not exactly familiar with the energy density of that sort if thing. I know the brunton hydrogen powerbank seemed to be about equivalent to lithium ion in terms of H2 can size vs what I'd expect from an equivalent battery.  Removable for household use seems a bit of a stretch. Its not outrageous enough to be utter bullshit, but still gives me "hmm not sure about that, I wouldn't adopt it first" feeling.

Membrane life and replacement cost, along with how much other consumables cost is also a big factor. I'm assuming there HAS to be an ion exchange resin filter to provide DI water to the electrolyser.

nctnico:
They are not the first. In the NL similar units have been installed already but these are using pressurised hydrogen instead of using a chemical conversion. Chemical conversion does have the advantage of offering high energy densities. During the conversion to hydrogen each molecule of Sodium borohydride provides two atoms of hydrogen (the 2nd atom from the water that the process uses). The downside is that the chemicals involved are pretty toxic.

Gregg:
I personally wouldn’t want to install the first generation of anything like this.  :popcorn:

I’m sure insurance companies are subtly modifying all policies upon renewal or a new policy to exclude coverage in case of problems either directly or indirectly involving household energy storage devices.   |O

Red Squirrel:
I'd love to see something like this be viable and in principle I think it can be.   But part of me also figures if it is viable than it would already be done. 

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