Name: 固態電池（Are Solid State Batteries The Perfect Battery?）
Uploaded: 2021-04-12T08:45:48.000Z
Duration: 3 min 53 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。

Batteries suck, you know it, I know it, we all know it and it's the one thing everyone

on Earth can come together and sing about.

Will this new technology be the hero we deserve?

Hey friends, countrymen, battery haters, this is DNews, I'm Trace.

A battery is typically two metals, one that gives up electrons (called an anode), and

one that takes them (called a cathode), connected through an electrolyte -- something that can

Electrolytes are usually liquids or gels, but isn't keeping a liquid in your laptop

What if we could just get rid of it altogether?

Because big batteries, like those in your car, have a liquid electrolyte they require

a rigid plastic or metal casing to keep the battery connections stable.

But most batteries you use are Lithium-ion, where the cathode and anode are connected

using an electrolyte made of an organic gel, called a polymer.

Polymer electrolytes can use light-weight plastic casings, and can be made in different

sizes which is great for new electric cars and portable devices.

Electrons flow from the anode to the cathode through your device, and that's how you're

But Lithium is highly reactive, and if the battery casing is punctured the reaction of

lithium with the moisture in the air can cause the gel electrolyte to catch fire…

OR as my chem teacher used to say, an "energetic reaction.”

Also, as an added suck, lithium-Ion batteries also don't work well in the cold, and because

the gel is organic the more times they're used, the less charge the batteries can move.

The lithium works great, and the electrons are doing their job, but the gel is the problem.

So, scientists are working on a way to get that gel OUTTA THERE.

Every battery since Alessandro Volta's original voltaic cell of copper, zinc and a salt bridge

But what if we could make an electrolyte that was just a solid piece?

Research published in Nature Materials might have done just that!

Building on another paper from 2011, researchers created a solid electrolyte that can move

the electrons just like the gel, but without the mess of explosions, sensitivity to cold,

They did this using a 3D tetrahedral framework of Lithium, Germanium, Phosphorous, and Sulfur.

The framework lets electrons move through it, hopping from one molecule to the next

for hundreds of thousands of charge cycles!

Because it's solid, you could "drive a nail through the battery," and it won't explode

And surprisingly, it functioned at negative 20 fahrenheit (-29C)!

One of the researchers commented that this design could be "almost a perfect battery,

solving most of the remaining issues [that batteries have]*."

So far, the design is very limited and can only produce 5 volts… the iPhone 5 battery

And other papers are coming out with alternative solid electrolytes, but this one is promising.

On top of ALL that, scientists figure, because they don't have to accommodate a gel, they

can add MORE individual cells of power, upping battery density by 20 to 30 percent, all while

Meaning these potential solid-state batteries will be safer, cheaper and will last longer.

Lithium-Ion batteries are rechargeable because they've been designed that way, but why aren't