DNAinaGoodWay
Well-known member
They don't detail the composition of the electrolyte, how it's produced, how it's consumed, and what by-products are emitted after, let alone what the cost might be.
GRA said:I imagine you were aware that I was referring to announcements of new battery (and Fuel cell) tech, especially those involving major breakthroughs in performance or cost.WetEV said:GRA said:a large dose of cynicism is necessary.
I get into my BEV every morning, and drive to work.
It's nice.
No cynicism needed.
Okay, but this is the "Future" battery tech thread. A few decades back we would all be driving BEVs soon because of soon to appear improved batteries, and we've seen how that worked out.WetEV said:GRA said:I imagine you were aware that I was referring to announcements of new battery (and Fuel cell) tech, especially those involving major breakthroughs in performance or cost.WetEV said:I get into my BEV every morning, and drive to work.
It's nice.
No cynicism needed.
I was referring to announcements of new battery technology. Announcements of a few decades ago, not of today.
GRA said:Okay, but this is the "Future" battery tech thread. A few decades back we would all be driving BEVs soon because of soon to appear improved batteries, and we've seen how that worked out.
Waaaay too zen for meWetEV said:The present and the past was once the future. And some futures are still in the past, and may always be.GRA said:Okay, but this is the "Future" battery tech thread. A few decades back we would all be driving BEVs soon because of soon to appear improved batteries, and we've seen how that worked out.
Next-gen Samsung EV battery gets 300+ miles of range from a 20-minute charge
As always, the key to reading this type of claim is to look for the specification which is NOT mentioned and find out how bad things are in that area. In this case, the missing specification is efficiency.Signs of the Times said:1414 Degrees had its origins in patented CSIRO research and has built a prototype molten silicon storage device which it is testing at its Tonsley Innovation Precinct site south of Adelaide.
Chairman Kevin Moriarty says 1414 Degrees' process can store 500 kilowatt hours of energy in a 70-centimetre cube of molten silicon - about 36 times as much energy as Tesla's 14KWh Powerwall 2 lithium ion home storage battery in about the same space.
Following up a year later, I see that the above image is no longer shown on the website (though the link obviously still works), but the verbiage which I quoted is there and roughly the same.RegGuheert in February 2016 said:BioSolar is developing a novel Super Battery cathode material which uses an advanced, low-cost polymer to replace the intercalation cathode material in a LI-ion battery. Here are their claimed characteristics:
Add to this very high cycle life and you have an extremely attractive battery. Here is some of the verbiage from their site:
<snip>
The only thing I don't see mentioned on the website is efficiency. Since current intercalation chemistries achieves very nearly unity efficiency, it is hard to imagine a redox-based approach achieving similar performance. OTOH, I'm not sure how they could hope to achieve charge rates over 5C if efficiency is significantly lower. We'll see.
BioSolar said:Silicon (Si) is one of the most promising anode materials being considered for next generation, high energy and high power lithium ion batteries (LIBs). Graphite is currently the most widely used anode material, but Si has attracted great attention because of its natural abundance, non-toxicity, and very high theoretical specific capacity of nearly 4200 mAh/g – about 10 times more capacity than conventional graphite anodes.
However, Si anodes suffer from large capacity fading and tremendous volume changes during lithium-ion charge-discharge cycling. The strains due to the huge volume changes actually pulverizes the Si material and eventually lead to electrode shattering and delamination, which adversely affect the battery performance and cycle life. These are the primary challenges to the commercial use of Si for battery anodes, which BioSolar intends to overcome.
It is good that they achieved an improvement, but that is far from being an Earth-shattering result.BioSolar said:One of the significant parameters that can project battery performance is the capacity retention after 200 charging and discharging cycles. At identical loading, prototype batteries with BioSolar’s Si-M anode retained 78.1 percent of the original capacity whereas the benchmark silicon anode retained just 76.6 percent of its original capacity.
http://www.autoblog.com/2017/04/05/tanktwo-has-the-weirdest-ev-battery-weve-ever-seen/Tanktwo has the weirdest EV battery we've ever seen
Can you give a source? I don't recall seeing it before, although I often only skim new battery claims as they're legion. I do think it's interesting from an engineering standpoint, and looks far cheaper than building Tesla-like swap stations. Doesn't mean that it would work, of course, and replaceable liquid electrolyte/flow batteries would still be preferable as far as solving the charge time issue.JRP3 said:It's a really dumb idea from at least two years ago. Not sure why Autoblog dug it up again.
I agree wityh you that there would be a cost issue, however, I;m not so sure that energy density would be as big a big deal given rapid refueling. Although it's always nice to have, you don't need as much range if you can be on your way again in 3-5 minutes. I suspect 2 hours of freeway range would be acceptable to most people other than real road warriors. Whether such batteries could do that with acceptable weight/volume, I have no idea.JRP3 said:I remember reading about this when it first came out, and the video in the "new" article was uploaded to youtube in March 2015. The concept is obviously flawed regarding energy density and cost, the two most important parameters for EV batteries. As charging times drop and charging locations increase the "problem" this system pretends to solve won't exist.
That sounds like a battery or possibly a fuel cell. A primary battery is a non-rechargeable battery such as alkaline, zinc-air or aluminum-air batteries. Secondary batteries are rechargeable such as lithium-ion, nickel metal hydride and lead acid batteries. If you can replace just one element of a primary battery in order to "recharge" it it becomes a fuel cell.LindsayNB said:The Phinergy/Alcoa Aluminum-Air "battery" looks like a potentially good technology as a range extender. I put battery in quotes because it seems more accurate to describe it as using aluminum as fuel and it isn't electrically rechargeable.
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