Missing from full electric, and hybrid vehicle promotions is the Achilles heel for Li-ion. Extreme temperatures are the enemy of battery range and when the battery is also the fuel tank, a hot or cold day can stop electric vehicles in their tracks.
For best operating results and also longevity, EV batteries need to be maintained within a fairly narrow temperature band. To get around this, “thermal conditioning” is used to regulate battery temperature. Typically electric and hybrid cars require liquid coolant and battery heating to cope with the extremes. All this adds to the cost and complexity of the operational needs of the vehicles.
CO2Land org has taken note of the words of Steve Kealy, that Ohio State University’s Center for Automotive Research is well advanced in testing new technology called Nanophosphate EXT (EXtreme Temperature) and the company promoting the system, A123, is claiming that the lithium-ion variant can operate at both high and low temperatures without requiring conditioning. Nanophosphate EXT technology is expected to start volume production in 20Ah prismatic cells in the first half of 2013. The Nanophosphate EXT cells retain more than 90 percent of their energy capacity after 2,000 full charge-and-discharge cycles conducted at 45 degrees Celsius.
Testing in extreme cold suggests the new cells will deliver 20 percent more energy than conventional cells at -30 degrees C. This better power delivery implies they could be used to create smaller, lighter batteries for both electric and conventional cars.
So if that problem is solved, we still need to address the problem of tackling Generator Emissions Standards at the recharging points for electric vehicles. Maybe the carbon price will take care of that problem?