Silver-zinc battery technology poised to challenge lithium for energy density

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In my opinion the constant use of galvanian cells is so very threathening to our social-economic community, society and environment, that I have to pledge and even pray for the ultimate and only solution of eliminating all power storage systems, to prevent the world being taken over by machines. Sincerely and in good hopes fo huminity the Professor

Good article Margery. I remember making a comment about military technology batteries when we talked about electric cars.It happens to be that way that all big technical gadgets(calculators,lcd screens....)are a "fallout" of military ,so now after submarines used it for several decades (an they were rechargeable) we are blessed with a new version of 40 year old technology.I guess that it boils down to a fact that if we REALLY want something ,we can get it.Let's get that technology and make it popular , before speculators buy out all silver and oil moguls start writing nonsence articles of dangers connected with Silver-Zinc batteries.

Intel would not invest if it was not ready for prime time. I know I would pay a premium for the 40 percent run time improvement, that is one of the most important things for me in a laptop since I travel constantly doing software consulting. I really don't care about the safety or environmental features, although I suppose it doesn't hurt to have the warm fuzzy eco thing. The people posting here saying Lithium ion is going to improve rapidly do not know what they are talking about. Lithium Ion is a very mature technology. So, a new technology that beats lithium ion by 40 percent out of the gate is very encouraging. Maybe I will to my silver miners portfolio.

J. Williams said it ALL. Good Post

We need to face it: Better lead acid is the way to go if you don''t need to haul it anywhere. Better lead acid batteries once were and can be again. If your foundation can hold it up, use lead acid. If you have to move it around, we do need the other batteries for sure. Electric cars could be run from the street under the car most of the time if we would plan it right and then do it. That way we only need to power the vehicle for short distances for off ramps and byways. Why not use the road way as a power source. That is especially true of trains which always go down the same tracks day after day. Who says all the powere has to reside in the car.

We need to face it: Better lead acid is the way to go if you don't need to haul it anywhere. Better lead acid batteries once were and can be again. If your foundation can hold it up, use lead acid. If you have to move it around, we do need the other batteries for sure. Electric cars could be run from the street under the car most of the time if we would plan it right and then do it. That way we only need to power the vehicle for short distances for off ramps and byways. Why not use the road way as a power source. That is especially true of trains which always go down the same tracks day after day. Who says all the powere has to reside in the car.

Someone from Stanford has announced a 10x LiIon energy density improvement using silicon nanowires. Do a keyword search on "Stanford LiIon Silicon Nanowire". They're claiming commercialization in less than five years.

How long has ZPower been in business, and what batteries have they sold? If this is such a good idea wouldn't we see competition?

Just my prediction, within 5~10 years, Li-ion battery will increase the energy density by 10 fold using nano technology. And the fire safety issue will be solved by then. The car industry will be the biggest driver for Li-ion battery improvement. Silver battery may have it's place. But challenge Li-ion? The chance is slim.

Surely this is yet another demand on silver (price increase!) that it will struggle to fulfil along with all of the new uses such as Hospital anti bacterial uses etc. etc. etc. Is there no end to this wonder metals' usefuleness!???

Silver zinc with a KOH electrolyte is rechargeable. That is not new. It's been around for decades in military systems. As for energy density, by volume, Ag-Zn may have better energy density, but by weight it's a wash. However, as I have experience in a program that used a Ag-Zn battery of over a megawatt hour, the reliability was not good at the higher energy densities. Dendrite formation was probably the biggest bugaboo. Unfortunately, the battery would only tolerate about 5 to 20 charge cycles before needing replacement due to cell shorts from dendrite formations puncturing the cell separators. As for safety, the KOH Ag-Zn battery has issues with both H2 and O2 production. Doesn't that sound explosive? The plates may be non-toxic but the electrolyte can be nasty. KOH is a main ingredient in drain cleaners, very caustic. The charging of the cells have to be watched carefully. I don't know what chemistry ZPower are proposing, but I don't see Ag-Zn taking over Li-ion anytime soon. By the way, this military program has now been using a 1.3 MWHr Li-ion battery very sucessfully for over two years.

How does the cost of silver come into the equation, if at all?