How environmentally friendly are electric cars, really? How environmentally friendly are electric cars, really?Get into the guts of a car you’ll find all those polluting Parts, gas tanks and exhaust systems. Andrew MacDonald is extracting something new. So that’s where you keep the batteries yeah. We store them here before we ship them out shift The Cars Since well. Cars first existed knock when the internal combustion engine was first used on Wheels. No one gave much thought to its carbon footprint kind of how we got to the point where, at today, quarter of carbon emissions come from the Transportation sector for manufacturers Under Pressure now from consumers and governments, electric vehicles are seen as the New Direction green success. So, are they Greener how much so back to the salvage yard? We set up our own little studio with footprint, hi Jennifer John Northwestern University Center for engineering sustainability and resilience and you’re the person to answer this question. What are the things when it’s an electric vehicle that you take into account about its environment impact? One really important aspect of an Eevee to think about is battery. There are a lot of moving cards there to really dig into to understand the environmental effects that helps power. The battery is produced from a number different metal, so things like nickel and Cobalt and lithium, and each of those medals has a different supply chain. 2 choice for Batteries capable of packing more than 10 times the power of a daily household electric meat into a car mining is eating up fresh water supply in Saudi America’s lithium. Rich Regents requires harsh chemicals in extraction in North America. So, what’s the solution, many efforts to try and think about responsible supply chain, but there’s still more that we can do to understand this and we’re really an opportunity stage. Now we’re starting Stihl to ramp up our use, the TVs and we have a chance to really understand the supply chain, understand environmental effects and and do our best to make those with minimal possible. We are at a stage where vehicles are better for the environment, but there not some Utopia. Charger battery really matters to electricity to charge your EV, then the environmental benefits of tea benefits. Aren’T cool is one of the least green ways to generate electricity for anything, including easy, but cool generated power is still cleaner than burning gasoline in a regular car, not according to Jennifer’s numbers. Generally, though, North American electrical grids, which rgv’s are made up of a mix of call but plenty of nuclear and hydro, an EV powered by that mix, means half the emissions of a gas. But here Renewables like wind. That’S where he’s really maximize their potential, virtually no negative impact on the environment. Of course, even if we get to better mining practices, more responsible supply chain and renewable electrical grids, we still have piles of batteries and Andrew’s yard and many others. What about those? So they manufacturers build these things and then we’re expected to figure out what those cars are made of. So you got lots of plastic components in metal components, but now these are complicated chemistry’s that we’re trying to figure out so there’s lots of stuff going on in the research labs around the world, trying to figure out what to do with these things, but certainly there’s A big potential for for what you can do with them. What are the top lithium battery research labs in the world is actually right here in Canada, Dalhousie physics department, looking at both after life applications for batteries and extending the life of the batteries themselves in the world of lithium-ion, Jeff Dawn, is a bit of a god. The Man Behind the groundbreaking paper on the million mile battery, but not about teaching us the basics, what’s that flat, pouch type lithium ion cell. So I have here small cells that we use in our research and if you cut open this pouch and extract what we call the jelly roll you can see. What it looks like Miss aluminum foil is the current collector for the positive electrode. We come to this black material. That’S the positive electrode material! In this case, it’s in our jargon called nmc lithium, nickel, manganese, Cobalt oxide cuz. You were in rolling it. What it look like, a fruit, roll-up y’all, be in a car you’re, trying to stuff a whole lot more power into that. Come from we’re trying to help make lithium ion batteries last longer or trying to help lower their cost and we’re trying to improve their energy density, so they can store more energy per unit weight. Why does that kind of thing. have to eliminate fossil fuels? Clear, okay, and if you want to use renewable energy for your source of power, while the sun in the wind aren’t there all the time but means you have to be able to store electrical energy and, more importantly, you know how the heck do you figure out? If a battery is going to last 30 years and experiments that only take a few weeks not challenging spawn, what’s the funds are solving this problem, that’s what scientists do right, they get involved in their work and they think man. I want to figure this out. I want to develop methods to solve these problems. Solving problems. Option gets even more so David CBC News, Mississauga Ontario, An electric car doesn’t produce emissions, but its parts still have a carbon footprint. We look at all the components of EVs, from how they’re charged to what’s in the battery to see how environmentally friendly they are.
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