Name: 電池（How The Next Batteries Will Change the World）
Uploaded: 2021-03-12T08:53:22.000Z
Duration: 11 min 28 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

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and then later coal and petroleum fuel sources

And really the great opportunity going forward is this idea

that we can capture renewable energy sources,

Advances in battery design over the past few decades

have made modern technology possible, but it's not enough.

We need better, cheaper, more energy dense batteries

if we're going to make electric cars ubiquitous

Now companies are on the verge of battery breakthroughs

has been kind of stuck making batteries one way

A battery looks like a black box quite literally sometimes

but inside it is a very complex mixture of chemicals.

There are two electrodes, cathode and anode,

and then there's a liquid electrolyte typically.

to shuttle irons between the two electrodes.

and that's what allows the battery to be then discharged

which is to say there was no way to generate electricity

until somebody made a battery and that was back in 1799

And what he created was actually called a voltaic pile.

It wasn't even called a battery back then.

it was literally a pile of two different types of metal

by typically a piece of cardboard that was dipped in vinegar

I got a copper sheet, I got a couple zinc sheets.

Right, just to start off, keep a simple aluminum foil

And so now you have to dip the coffee filter

You also have a voltmeter which basically

Now you can connect a copper cable on either ends

then you can connect it to say an LED light

The more cells you pile on the higher the voltage.

to see if we could power up an LED light.

Batteries have come a long way since the voltaic pile

but they're still made up of the full basic components,

anode, cathode, separator, and electrolyte.

The current state of the art lithium-ion battery

But in order to make de-carbonization a reality,

Among the different things about batteries

is not just the amount of energy they can store

Batteries also need to be charged more quickly

and finally batteries still aren't cheap enough.

to be able to compete with the gasoline powered engine.

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電池（How The Next Batteries Will Change the World）

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