The surprisingly long history of electric cars - Daniel Sperling and Gil Tal

502,975 views ・ 2021-10-26

TED-Ed


Please double-click on the English subtitles below to play the video.

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If you were buying a car in 1899,
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you would’ve had three major options to choose from.
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You could buy a steam-powered car.
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Typically relying on gas-powered boilers, these could drive as far as you wanted—
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provided you also wanted to lug around extra water to refuel
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and didn’t mind waiting 30 minutes for your engine to heat up.
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Alternatively, you could buy a car powered by gasoline.
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However, the internal combustion engines in these models
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required dangerous hand-cranking to start
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and emitted loud noises and foul-smelling exhaust while driving.
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So your best bet was probably option number three:
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a battery-powered electric vehicle.
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These cars were quick to start, clean and quiet to run,
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and if you lived somewhere with access to electricity,
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easy to refuel overnight.
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If this seems like an easy choice, you're not alone.
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By the end of the 19th century, nearly 40% of American cars were electric.
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In cities with early electric systems,
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battery-powered cars were a popular and reliable alternative
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to their occasionally explosive competitors.
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But electric vehicles had one major problem—
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batteries.
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Early car batteries were expensive and inefficient.
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Many inventors, including Thomas Edison,
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tried to build batteries that stored more electricity.
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Others even built exchange stations in urban areas to swap out dead batteries
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for charged ones.
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But these measures weren’t enough to allow electric vehicles to make long trips.
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And at over twice the price of a gas-powered car,
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many couldn’t afford these luxury items.
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At the same time, oil discoveries lowered the price of gasoline,
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and new advances made internal combustion engines more appealing.
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Electric starters removed the need for hand-cranking,
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mufflers made engines quieter and rubber engine mounts reduced vibration.
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In 1908, Ford released the Model T;
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a cheap, high-quality gas-powered car that captured the public imagination.
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By 1915, the percentage of electric cars on the road had plummeted.
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For the next 55 years, internal combustion engines ruled the roads.
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Aside from some special-purpose vehicles, electric cars were nowhere to be found.
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However, in the 1970s, the tide began to turn.
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US concerns about oil availability renewed interest in alternative energy sources.
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And studies in the 1980s linking car emissions with smog
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in cities like Los Angeles
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encouraged governments and environmental organizations
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to reconsider electric vehicles.
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At this point, car companies had spent decades
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investing in internal combustion engines without devoting any resources
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to solving the century-old battery problem.
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But other companies were developing increasingly efficient batteries
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to power a new wave of portable electronics.
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By the 1990s, energy dense nickel metal hydride batteries were on the market,
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soon followed by lithium-ion batteries.
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Alongside regulatory mandates by California to reduce smog,
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these innovations sparked a small wave of new electric vehicles,
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including hybrid cars.
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Hybrids aren’t true electric vehicles;
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their nickel metal hydride batteries
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are only used to optimize the efficiency of gas-burning engines.
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But in 2008, Tesla Motors went further,
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grabbing the attention of consumers, automakers, and regulators
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with its lithium-ion-powered Roadster.
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This purely electric vehicle could travel more than 320 kilometers
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on a single charge,
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almost doubling the previous record.
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Since then, electric vehicles have vastly improved in cost, performance,
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efficiency, and availability.
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They can accelerate much faster than gas-powered sports cars,
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and while some models still have a high upfront cost,
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they reliably save their drivers money in the long run.
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As governments around the world focus on slowing climate change,
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electric vehicles are now expected to replace gas-powered ones altogether.
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In Norway, 75% of car sales in 2020 were plug-in electric vehicles.
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And policies such as California’s Zero Emission Vehicle mandate
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and Europe’s aggressive CO2 emission standards
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have dramatically slowed investments in gas-powered vehicles worldwide.
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Soon, electric cars will reclaim their place on the road,
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putting gasoline in our rearview.
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