Ok, now its a good news for people , who always used to wonder why 2 hours has become a industry standard for recharging a Lithium Ion Batteries. Let it be cellphone, or a Digital camera or a simple bluetooth headset.
Here is what Scientist used to think before
Scientists thought that the reason why lithium-ion batteries have slow charging and discharging times is because the ions travel across the battery slowly.
However, now they have been proved totally wrong as tests reveal that the ions are shuttled across the battery very quickly
The real reason for slow charging
The real reason why charging and discharging times are slow, is that the ions can only travel through tunnels accessed from the surface. Only ions positioned immediately at the entrance of the tunnels can be shuttled across.
The answer then to the slow charge/discharge cycle is to design a new surface more conducive to traveling.
MIT engineers designed the new surface
Ceder and Byoungwoo Kang from MIT addressed the need for the new surface by designing some sort of a beltway that takes the ions directly to tunnels for faster traveling.
According to MIT, the new material tested could be charged AND discharged within just 10 to 20 seconds as opposed to the usual six minutes the current material of the same volume would take.
The new battery technology is an upgraded version of the current lithium iron phosphate battery as opposed to lithium cobalt because the former is not prone to overheating.
The new surface structure that gets ions to move more quickly from one place to another. They compare their project to building a beltway that goes around a city to avoid traffic, but has tunnels that let you drop in to exactly where you need to be.
When will it be available ???
We being the consumer are always bothered about the end product. What technology is used and how the target output is achieved, may not be the matter of concern for many. They will be just ready with the question that
When are these batteries going to be available ??
Even though this has been put up as “Coming Soon” by pcw, I totally disagree with this point.
To actually make such kind of ground breaking technology work, will surely need a lot of testing. Its quite possible, that if the batteries can charge in 3 seconds , it might get discharged in 10 seconds …..
However going through the comments in PCW , I found one very technical comment by mrfnord :
I don’t know how feasible this is from an infrastructure perspective, and it sounds a bit dangerous. Let’s take a 100 Watt-hour laptop battery. If it charges in 3 seconds, it will be absorbing 100W 60 20, or 120kW for 3 seconds. If it’s a 6 cell li battery it will have a max voltage of around 25v (4.2v per cell), so it will require 4,800 Amperes of power for 3 seconds! What wire can handle that? And what power grid can handle burst loads in the range of small supplemental power plants for a few seconds?
Now imagine recharging cars. A 50 mile range EV would have a 10+kWh battery. If it takes a modest 2 minutes to charge it will pull 300kW, or 2,000 Amps at 150 volts. A typical US home consumes 20-60kWh per day, with peak consumption around 8kW per hour. A single charge station turning on will be the same as 38 houses ‘turning on’ in a split second, then ‘turning off’ again a few minutes later. If 10% of all cars were electric and 10% of all gas stations were EV chargers instead, how many charge ups a day would that be? A medium sized town may have 20,000 cars, now 2,000 electric. If half of them fill up per day (ie 25 miles/day average driving) That’s the load of 38,000 houses switching on and off for 2 minutes randomly per day.
I agree , when I posted about 40GBPS internet connection, we failed to understand whether there are any same speed capable harddisk available ??
Moreover, there was an article about nanowire technology which can boost mobile battery life to 10 folds and also about Ultrabatteries . But I havnt seen anything making a headline after that …
So, guys don’t expect these 3 second re-chargeable batteries to be out in market soon …
via : pcworld
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3 seconds? Wow that’s a performance and a real success. What can be more annoying than keeping your phone to charge and in the same time having important calls to give.