Ah, I see: http://en.wikipedia.org/wiki/P... "A pseudocapacitor has a chemical reaction at the electrode...This faradaic energy storage with only fast redox reactions makes charging and discharging much faster than batteries."
So, they made a new kind of supercapacitor, maybe with lower self-discharge than previous ones? A supercapacitor is exactly what I would expect in this application. Calling it a battery seems unnecessary and misleading.
Fact: The U.S. power grid has continually reduced its overall emissions for decades now.
Fact: Electric vehicles produce less overall emissions than a 35mpg car, even on the dirtiest grid in the U.S, and most EVs are operated on much cleaner grids.
Fact: Over 1/3 of EV drivers own enough solar generation to offset the power used in their cars, making them truly zero emissions.
Zero-emissions electric vehicles exist now, if you have the money or lifestyle to fit it. I too think it will be a great day when hydrogen cars actually compete with battery-electric vehicles. But the obstacles we have to solve before then are many:
1) invent a way to convert electricity into hydrogen that actually approaches the efficiency of batteries, if not equaling it, instead of making it out of methane like we do now or wasting half your power in electrolysis.
2) build hydrogen fueling stations everywhere before a solid base of users exists to pay for it.
3) convince the public that hydrogen cars won't explode like the Hindenburg (stupid but important).
4) make them cheaper than an equivalent battery-electric car, because by the time all that gets done BEVs will be so far ahead you will wonder why you bothered with hydrogen at all.
Once Tesla has created a super-cheap source of grid storage batteries, everyone with an electric car can get solar and go off the grid. Then the power plants and centralized distributors will be forced to shut down. Then local grids will spring back up so people can use communal backup generators on cloudy weeks, but we will never again need the complex monstrosity of our present power grid because all generation will be local. We already have new factories installing enough solar and wind to power themselves, so it's only a matter of time before the grid becomes redundant and uneconomical to maintain.
Not to mention, batteries for cars are are optimized for weight, while batteries for grid power are optimized for everything but weight.
Batteries for cars are optimized for weight, size, power delivery, low maintenance and cost. Batteries for grid storage are optimized for power delivery, low maintenance and cost. Size and weight are bonuses that make them cheaper to deploy (less land/manpower). So they really aren't as different as you make out.
No utility in their right mind is going to deploy billions of lead-acid cells that will need constant watering and replacement in 5 years when they could buy EV batteries cheaply (due to combined scale of manufacturing and/or reuse) and leave them in place for 20 years.
It probably also demonstrates something about how energy profligate that personal motor transportation really is.
Yes it does, especially when you consider that electric vehicles are 80% efficient compared to 20%-efficient gas cars.
Long charging times for electric vehicles stop any journey where the trip is greater than the battery range.
Yes they do, but we don't need this tech to fix it. Existing batteries can do it just fine, if we would only invest in enough high power charging points.
Existing batteries can charge to 80% in half an hour. The only thing stopping us is the scarcity of high-power charging stations, and making batteries charge faster only makes those stations more expensive and less likely to be actually installed. That is why improving battery capacity and efficiency, not the charge rate, and rolling out more infrastructure using the existing standards are the most important things for EVs right now.
"The only way I can lose this election is if I'm caught in bed with a dead girl or a live boy." -- Louisiana governor Edwin Edwards