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U.S. 5X Battery Research Sets Three Paths For Replacing Lithium
dcblogs writes "One year ago this month, the U.S. Department of Energy announced a $120 million plan to develop a technology capable of radically extending battery life. 'We want to change the game, basically,' said George Crabtree, a senior scientist at Argonne National Laboratory and a physics professor who is leading the effort. The goal is to develop a battery that can deliver five times the performance, measured in energy density, that's also five times cheaper, and do it in five years. They are looking at three research areas. Researchers are considering replacing the lithium with magnesium that has two charges, or aluminum, which has three charges. Another approach investigates replacing the intercalation step with a true chemical reaction. A third approach is the use of liquids to replace crystalline anodes and cathodes, which opens up more space for working ions."
Nonsense, this is bleeding edge. In a few weeks, they'll realize that they can use lead, with three charges. Then if they apply that liquid bath, say with a true chemical reaction.... ...hmm, I wonder if sulfuric acid could do the trick....
then they'll have a real, working battery that can compete with Lithium!!!
And you thought this was last year's news?!?
Correct Horse Battery Staple: 72 bits of entropy. Enter "Correct H" into google. When it generates the phrase, that's
OK, Lets use an Enerdel 12s block. 3000 cycles by 1300 watt-hours gets us 3.9 million watt-hour-cycles.
The cost is $711. So 3.9 million w-hr-cycles / $711 is 5485 w-hr-cycles per dollar. What is the w-hr-cycles of gasoline again?
That's an interesting question:
Gasoline gives us only one cycle.
$ units
You have: (114000 btu / gal) / (3$ / gal)
You want: W hr / $
* 11136.701
Sounds bad... but car engines are only about 20% efficient and electric cars are more like 80% efficient.
If we normalize that way, the gas car is 2227, and the batteries are 4388.
Looks like the batteries win, even with current temporary lull in gas prices.
I am a battery scientist, and while I think that Argonne is one of the places where great work is done, they have set very ambitious goals for themselves.
1) Replacing Li with Mg is a lovely idea, but currently there is no fully stable electrolyte and as far as I know nobody has good candidates for electrode materials. Don't even get me started on Al.
2) Lithium-air batteries have been debated to death also here on /.. The current status is again that there seems to be no stable electrolyte, no clear idea of what exactly happens, and if we factor in the weight and complexity of adding various components to the battery assembly to make a real device out of it, the great theoretical energy density of Li-O2 is reduced to Li-ion levels, if not even less.
3) The liquid slurry electrode is an interesting concept which at least recycles materials that are available and known to be working. This is more of an engineering problem than a scientific one, and could see quick advancement in 5 years.
I hope the community as a whole will be able to find the breakthrough to finally have people stop cursing batteries.
Batteries: you hate them since 150 years!