SiGNa Chemistry Inc creates a water-rechargeable battery

March 2, 2011 by Katie Gatto, weblog

When you think about charging a battery you probably picture an outlet, not a bottle of water. One company is out to change all of that. A company called SiGNa Chemistry Inc has created a hydrogen-producing cartridge that is able to work in concert with pocket-sized fuel cell charging device in order to give cell phones and other mobile devices an instant power boost.

The device, which has been dubbed the mobile-H2™, works like this. You grab one of the power cells and just add water. The device will then generate power and charge your depleted batteries without an outlet or solar panels. Good news if you happen to run out of power at night. The truly cool part of this equation is that any type of water will do. Even gray water or waste water.

The chemistry behind this is pretty cool. SiGNa's cartridge technology contains both sodium and sodium silicide (NaSi). Normally when a sodium metal reacts with , and produces gas, the reaction is fairly violent and releases a fair amount of heat. SiGNa has found a way around this by using a custom synthesis for their sodium silicide that creates a more controllable reaction.

The company is not releasing any specifics on how they synthesize their sodium silicide, but some previous documents released by the company suggest that they may have absorbed sodium into silica by coating a form of commercially available silica gel with a liquid sodium-potassium alloy, essentially creating a black powder, which would then be given a range of heat treatments to enhance its stability.

Explore further: Electric bicycle gets 60-mile range with portable hydrogen fuel cell

More information: … na/pdf/mobile-h2.pdf

Related Stories

Crystal clues to better batteries

February 19, 2007

Longer-lasting laptop and mobile phone batteries could be a step closer thanks to research by scientists at the University of Oxford.

Power on the go

April 12, 2006

Mobile devices are becoming more and more intelligent – allowing users to watch movies on a mobile phone or laptop, or navigate with a PDA – but at the same time they require increasing amounts of power. To prevent the ...

Recommended for you

'Astrocomb' opens new horizons for planet-hunting telescope

February 19, 2019

The hunt for Earth-like planets, and perhaps extraterrestrial life, just got more precise, thanks to record-setting starlight measurements made possible by a National Institute of Standards and Technology (NIST) "astrocomb."


Adjust slider to filter visible comments by rank

Display comments: newest first

1 / 5 (1) Mar 02, 2011
I knew they'd find a use for the powdered water they invented last month.
3 / 5 (2) Mar 03, 2011
The use of the word 'cool' (in two successive sentences to boot) isn't exactly confidence inspiring in a 'science' article. Sounds more like advertising.
not rated yet Mar 03, 2011
I'm pretty certain this implies it consumes water AND sodium... I wonder how often you'd need to replace the "PowerPUKK"
not rated yet Mar 03, 2011
There is not such thing as confidence inspiring articles on this site. I find articles really entretaining though.
I've always hated this sort of advertise-focused description of products. It's not a water-rechargable battery, it's a sodium rechargable battery. Sodium is the real "fuel" here. They might have improved the efficiency of the hydrogen generation or the fuel cell, but it's still not reliable. I'd like to know how much charge it can generate out of the amount of sodium it brings by default. I presume not much.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.