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Lithium-Air Batteries

Saw this on Twitter about the new types of batteries that may be powering our Twizys of the future:


And from Wired:

Very interesting, would be great if not squashed by a paranoid superpower.

Lightly That really made me laugh. You’re far to cynical.

Well found James. Needs tying in to your other Tweet about charging then we are looking at a very very neat system that is way better than fossil fuels.

If you want to avoid the fossil fuels with your Twizy, switch your house’s energy tariff to a deep green tariff. Honestly it’s that easy to take fossil fuels completely out of the equation. The Carbon Footprint of electricity is in the generation, not in the use and a Twizy is not truly a ZE (zero emission) vehicle till that change is made. There will always be oil in our Twizy impact (don’t forget in those 4 skinny tyres we all love to scud around corners)… :wink: The Lithium air batteries show promise as a “range extension” battery. :wink: M

**The following reported in Autocar. Slight improvement in battery technology??

Kia says its forthcoming Soul EV will have a driving range of around 124 miles thanks to a new battery material. The new power cell has a high energy density, which means the Soul can be recharged in only 25 minutes. The Soul EV will go on sale in the UK following a US launch later this year, and is expected to cost around £25,000.**

Always liked the Kia Souls. People think I’m mad, but they are a little bit different (like the Twizy) and Kia has a great reputation at the moment. If I could afford it I would look into buying one of these as a grown up EV.

Reported in Autocar. Another advance in battery technology??

                 [h=1]Quant e-Sportlimousine shows new battery technology[/h]                                         Lichtenstein-based Quant uses Geneva show to  reveal electric car with pioneering new battery tech, with plans to  produce road-going prototypes before 2015
       http://images.cdn.autocar.co.uk/sites/autocar.co.uk/files/imagecache/article_image_480/Quant-Sport-Limo---Geneva---01.jpg](http://images.cdn.autocar.co.uk/sites/autocar.co.uk/files/Quant-Sport-Limo---Geneva---01.jpg)          NanoFlowCell technology is claimed to have far greater performance than lithium-ion batteries      




            by [Autocar](http://www.autocar.co.uk/users/autocar)
     6 March 2014 12:19pm
          This is the NanoFlowCell Quant e-Sportlimousine, an electric gull-wing coupé revealed at the [Geneva motor show](http://www.autocar.co.uk/car-news/geneva-motor-show).

At 5.25m long, the e-Sportlimousine is longer than a Mercedes-Benz S-class, sitting at 2.2m wide, 1.35m high and with a 3.1m wheelbase. It features two-metre gull-wing doors, with 1.7 metre-wide side windows. The car tips the scales at 2300kg.
According to Nunzio La Vecchia, technical director of NanoFlowCell AG, “The QUANT e-Sportlimousine is neither a show car nor a concept car.
“It is a research vehicle for road testing innovative energy storage systems, focusing especially on development and improvements in flow cell battery technology.”
The Quant e-sportlimousine uses four electric motors, one for each wheel. Current reports suggest a combined power output of 912bhp, enabling a 0-62mph sprint in 2.8sec and a top speed in excess of 236mph.
The firm states its NanoFlowCell technology has five times greater performance-by-weight than current lithium-ion technologies which power most of today’s electric vehicles. Its driving range is claimed to be five-times greater than a conventional unit of the same weight, although no official figures have been released.
In the company’s own words, the technology works by "a combination of a battery and a fuel cell using liquid electrolyte which are kept in two tanks and pumped through the cell.
“At the heart of the system, a membrane separates the two electrolytic solutions, but allows electrical charge to pass through and thereby produce power for the drive train.”
The interior stands out with some unusual highlights, with the two rows of individual seats, one behind the other in cockpit style, accentuating the carbonfibre monocoque construction. The Quant e-Sportlimousine’s infotainment system is implemented in an Android-based system.
A downloadable app allows the driver to access the e-Sportlimousine’s climate and infotainment controls from outside the vehicle. Driving statistics and navigation functions are also accessible from a smartphone.
The Lichtenstein-based company has plans to develop road-going prototypes of the car before the end of the year.
Read more Geneva motor show news.
Aaron Smith

These two part batteries with pumped electrolyte appears to be the way to go in the short term. To increase capacity one simply increases the volume to the liquid stored in the containers that is being pumped between them. In theory as it is not a closed system, used liquid/electrolyte could be dumped out and recharged out side the car and other container refilled with charged electrolyte like a petrol station.

Well said osbrook. Nevertheless, that’s interesting. I just hope they are better than what we have today.

Alas no. A high energy density simply means higher wH/litre, so that the space taken up by the battery is less. I don’t think it follows that that’s what means it can be “recharged in only 25 minutes”. Reading other EV forums it’s clear that those who see future EV’s converging on current ICE vehicles in terms of their range and charge times are hoping that eventually we’ll be able to put 200kWh of energy into an electric battery in about the 5 minutes it takes to fill a diesel tank. That could certainly be done, but if you imagine a bank of 8 or 16 of such charge points in a motorway service station of the future the power requirements are startling.

200kWh in 5 minutes is 2400 kWh in an hour, or as old-fashioned physicists would put it, 2400kW (or 2.4MW). 8 of those means a peak load for that filling station of about 20 megawatts which, as any liberal arts journalist will find out with a bit of Googling, is “enough to power 40,000 homes” [though said liberal arts journalist would be almost certain to add “for a year”, thereby demonstrating a misunderstanding that invalidates their report :rolleyes:]. Although 20MW is a peak load, it would still be reached occasionally during rush hours. Some kind of flow battery, as mentioned above, may be the only practical way to recreate the convenience of current fossil fuel stations, and balance EV energy production and consumption in a way the grid can perhaps cope with. In the mean time, let’s hope and pray that most EV charging can continue to take place overnight, over relatively long periods, putting just enough energy back for an average day’s motoring for most vehicles.