The Car Battery’s Carbon Footprint IEEE Spectrum

22 Мар 2014 | Author: | Комментарии к записи The Car Battery’s Carbon Footprint IEEE Spectrum отключены
Interesting » Electric Cars

Electric cars may run clean. But how is the battery?


Hi, this is Steven for IEEE Spectrum ‘s Week in Technology. With around the world investing in electric and hybrid cars, the for the batteries that power vehicles is on the rise. The United alone has invested $2.4 to ramp up production, and the first of lithium-ion car batteries is just now the market.

By 2014, the U.S. be making a half million a year. Battery-powered cars fewer pollutants and greenhouse That’s the point.

But some have wondered: Just how are the batteries themselves? Where that soft silvery lithium, come from? goes into making it a battery? And just what is its compared to that of a traditional engine?

My guest today is Dominic a researcher for the Swiss Federal for Materials Science and Technology. He us by phone from his office in Switzerland. Dominic, welcome to the

Dominic Notter: You’re

Steven Cherry: So maybe you can us what your research How green is a lithium-ion battery, and how that compare to a regular engine?

Dominic Notter: I tell you how green it is, because it did not different batteries, but I can tell you the battery car is greener than the combustion engine car. If you at climate change, it is most for most people nowadays: The electric car is 30 to 40 percent greener the standard car.

Steven Cherry: If I understand research correctly, there some things to be said the environmental consequences of mining the and processing it and turning it into a car but that turned out to be just a small fraction of the entire footprint of a battery-driven car. Is correct?

Dominic Notter: correct. That’s one of the nine of our study, is that the impact of the battery used in these is very small. The operation of the car is the dominant contributor to the environmental caused by the transport service.

So means that charging the with electricity is much, more important than the of the lithium within the battery. The of the lithium within the battery has the of about 2 percent to the transport

Steven Cherry: And I guess it a big difference where the electricity for the car from.

Dominic Notter: true. For the comparison of the electric car and car, we used European mixed for charging the battery of the car. European electricity mix of about 51 percent on fossils and 30 percent nuclear and 10 percent and the rest is a very small share.

Steven Cherry: I it wasn’t so easy to collect all the involved in your study.

Notter: Yes, this is the big when you’re doing assessment. So, life-cycle assessment, you to do mainly two steps. One of them is which emissions will and which raw materials are used the life of the product.

These are when we did the LCI, the life-cycle of this battery.

Steven Cherry: Dominic, we a saying here that is like comparing apples to Did you find that to be the case it came to comparing environmental What I mean is, the toxicity of the in a battery is one kind of environmental and it’s very different that of shipping a battery the Atlantic Ocean.

How do you total up impacts and then compare one to another?

Dominic Notter: We four different impact-assessment One was the global warming potential, tells us something about change. One was the cumulative energy for the battery, and then we had one which human toxicity, resource and quality of eco systems. And no matter of these impact assessment you are looking for, the main remains the same.

Interesting » Electric Cars

The battery electric car is, let’s greener than the internal engine car. Regarding burden, internal combustion cars should not use more 59 to 70 miles per gallon.

Steven That would be less right?

Dominic Notter: less, sorry. Of course.

Cherry: it’s very actually because the Europeans things in liters per 100 kilometers, and almost the reciprocal of how we look at here.

Dominic Notter: exactly.

Steven Cherry: that’s good to know. we should make cars are either about twice as as we’re making them now, or we should switch to battery cars.

Dominic Yes, that would be a idea.

Steven Cherry: thank you very much for time.

Dominic Notter: You’re

Steven Cherry: We’ve speaking with Dominic of the Swiss Federal Laboratories for Science and Technology about the impact of making, using, and electric car batteries. For IEEE ‘s This Week in I’m Steven Cherry.

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