Phinergy's metal-air battery could eliminate EV range anxietySubmitted by Bob-45 on Sun, 04/07/2013 - 03:29
By Darren Quick
April 3, 2013
Israel-based company Phinergy claims to have developed metal-air battery technology that promises to end the range anxiety associated with electric vehicles. The company’s battery currently consists of 50 aluminum plates, each providing energy for around 20 miles (32 km) of driving. This adds up to a total potential range of 1,000 miles (1,609 km), with stops required only every couple of hundred miles to refill the system with water.
There are a number of companies and university research teams currently working on air-battery technology – usually lithium-air batteries – with the goal of improving the range of electric vehicles. These batteries offer significantly increased capacity in a more compact form factor by replacing bulky conventional cathodes, which contain the oxidizer within the battery itself, with lighter “air cathodes” that instead draw oxygen from the surrounding air.
Phinergy claims to have solved the CO2-related premature failure problems seen in other metal-air battery technologies by developing an air electrode with a silver-based catalyst and structure that lets oxygen enter the cell, but blocks out CO2. The result is an air electrode that Phinergy says has an operational lifespan of thousands of hours.