Name: 氫氣；自然界的燃料 (Hydrogen; Nature's Fuel)
Uploaded: 2021-01-14T06:25:51.000Z
Duration: 56 min 47 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。

程度副詞

We're at a very interesting stage of development

of this technology where it's not quite ready for prime time

time but it's getting tantalizingly close

We're competing in a market that we have to compete

with batteries and generators, and how do we do this?

for the transportation industry in the future.

I would much rather drive my fuel cell vehicle

The Energy & Environmental Research Center's

(female narrator) You've probably heard something about hydrogen.

You may know hydrogen can be used to fuel cars.

But did you know that hydrogen is used safely

It can be made where you want, when you want.

Imagine living in a world without concerns about

energy security or pollution. where you can get

all the energy you need from domestic sources.

This is actually an electric car, it's got

an electric motor in the front that drives the car forward.

from fuel cell system that converts hydrogen and oxygen

from the air into electricity and water as a waste product.

been around for 150 years as a chemical principle.

Starting about the '60s these devices were made for space

and over about last 15 years automakers have been

working very hard to develop the technology for automobiles

as a way of simultaneously reducing the use of oil,

a PEM fuel cell, proton exchange membrane.

The way I like to explain it, it's like a sandwich where in

the middle of the sandwich, the meat of the sandwich,

if you will, you have a membrane material, you have hydrogen

on one side, and you have platinum as catalyst material.

That catalyst allows the hydrogen molecule

to split apart into protons and electrons.

The protons go through the membrane, the electrons have to

go around the membrane, and as those electrons are

going around the membrane, they are powering the electric motor.

Everything meets on the side with the oxygen

Sometimes you'll hear it called a fuel cell stack.

It's a whole stack of these fuel cells just like you stack batteries

together in a flashlight to build up more voltage.

In a car like this you might have 400 fuel cells

all stacked together to give you a few hundred volts.

That hydrogen is being used primarily as a feedstock

for making agricultural products such as fertilizer

to take the petroleum in its raw form and make it

into e petroleum that we use in either diesel or gasoline.

It's also used for medical applications, food processing,

If you look down the road in the hydrogen economy,

some of those uses are for transportation

such as forklifts in a warehouse, backup power,

or even putting electricity onto the grid.

As always, when you start going into new markets

it becomes difficult for commercial companies

to invest in something that is years out,

like the National Center for Hydrogen Technology

because that federal support helps bridge that gap.

With that we work closely with commercial partners,

developments in terms of being more effective, lower cost,

better environmental advantages, and these are all things

that are helping to buoy the hydrogen economy.

As we go down this path and we get those goals met,

we start grabbing more and more market opportunities.

the cost of producing the hydrogen as well,

And we then reach more and more applications,

and we then see it accelerating, and as that happens

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氫氣；自然界的燃料 (Hydrogen; Nature's Fuel)

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