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from the probably-ready-in-about-5-years dept.
The Telegraph and Stanford News are reporting a new aluminium-ion cell which is hoped will outperform conventional lithium-ion cells.
As well as charging in 60 seconds, it is claimed, the cell will withstand 7,500 charge/discharge cycles compared with lithium-ion's 1,000 cycles.
Apart from a low 2-volt output, "our battery has everything else you'd dream that a battery should have: inexpensive electrodes, good safety, high-speed charging, flexibility and long cycle life," states Hongjie Dai, Professor of chemistry at Stanford University.
"We have developed a rechargeable aluminium battery that may replace existing storage devices, such as alkaline batteries, which are bad for the environment, and lithium-ion batteries, which occasionally burst into flames."
The research is due to be published in Nature.
(Score: 5, Informative) by Megahard on Tuesday April 07 2015, @08:06PM
Not sure why they are down on this. All chemical batteries are in this range as it is the maximum redox potential of chemicals stable enough to put in a battery. The 12-V battery in your car is 6 2-V cells wired in series.
(Score: 3, Informative) by ikanreed on Tuesday April 07 2015, @08:53PM
Presumably because the rapid charging that is the selling point requires being wired in parallel.
(Score: 2) by VLM on Tuesday April 07 2015, @09:03PM
Driving cells into reverse voltage during intense discharge and low charge state can generally be exciting in other battery families, its not necessarily just a charging "thing".
I never fail to be amazed at power control electronics progress over the past couple decades, the star trek world of the future is a world of single cell batteries and rather exotic (by present standards) silicon.
(Score: 1) by khallow on Wednesday April 08 2015, @01:48AM
Presumably because the rapid charging that is the selling point requires being wired in parallel.
Not saying this is the best approach, but you can change the wiring internally so that it is parallel during charging versus serial during regular use.
(Score: 2) by Nuke on Tuesday April 07 2015, @09:44PM
"Apart from a low 2-volt output, "our battery has everything else you'd dream that a battery should have"
Megahard wrote :-
Not sure why they are down on this [the 2v output]
Megahard's comment led me to re-read TFA and realise it is quite ambiguous - ie it could mean "our battery has everything it should have:- 2 volts and everything else", and that is how I first read it. The idea of a ~2v cell is so to be expected that without thinking I took it to be an advantage. After all, you just stack them up as you say, like a 12v car battery is 6x2v cells, as most people probably do not even realise in these days of sealed units.
Being picky, the 2v unit is a cell, not a battery. The battery is the assembly of cells in series.
As for having dreams about batteries, sounds like Prof Dai should seek help.
(Score: -1, Troll) by Anonymous Coward on Tuesday April 07 2015, @09:58PM
You are a windbag and a bore. Be gone.