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Curiosity Weekly

Difference Between 5G and 4G Networks (w/ Trace Dominguez) and Self-Repairing Batteries

Curiosity Weekly

Warner Bros. Discovery

Self-improvement, Science, Astronomy, Education

4.6935 Ratings

🗓️ 16 June 2019

⏱️ 10 minutes

🧾️ Download transcript

Summary

Learn about how scientists developed a self-repairing battery. Plus: science communicator Trace Dominguez answers a listener question about the difference between 4G and 5G networks.

In this podcast, Cody Gough and Ashley Hamer discuss the following story from Curiosity.com about how scientists have developed a self-repairing battery: https://curiosity.im/2JZD57m

Additional resources from Trace Dominguez:

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Find episode transcript here: https://curiosity-daily-4e53644e.simplecast.com/episodes/difference-between-5g-and-4g-networks-w-trace-dominguez-and-self-repairing-batteries



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Transcript

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0:00.0

Hi, we're here from Curiosity.com to help you get smarter in just a few minutes.

0:05.1

I'm Cody Gough.

0:06.1

And I'm Ashley Hamer.

0:07.1

Today you learn about how scientists developed a self-repairing battery, and we'll also

0:11.2

answer a listener question about the difference between 4G and 5G networks with a special guest,

0:16.0

science communicator Traste Dominguez.

0:18.0

Let's satisfy some curiosity.

0:20.0

Last month, scientists announced that they may have achieved a major breakthrough.

0:24.0

They've developed a self-repairing battery.

0:27.0

This could mean that in the future, those days of having an old phone or laptop that just can't hold a decent charge anymore could be over.

0:34.0

Before I get into how they did that, here's a quick refresher on how batteries work.

0:38.0

All batteries contain three things, a positive electrode, a negative electrode, and an electrolyte between them.

0:45.2

Rechargeable batteries like the lithium ion one in your phone or laptop charges by

0:49.8

sending charged particles from the positive electrode through the electrolyte and into the negative electrode.

0:55.0

Those charged particles are called ions.

0:58.0

And when it's time to actually use your device, the ions head in the opposite direction,

1:02.0

this time from the negative electrode to the positive one.

1:05.4

Okay, so why does a battery stop holding a charge? Well, let's use a lithium ion battery as an example.

1:12.2

The electrodes in a rechargeable battery are usually

1:14.9

made up of a bunch of super thin layers of some type of metal, super thin as in

1:19.8

about as thick as an atom. In a lithium ion battery, the negative electrode

1:24.0

is made of graphene, which is basically sheets of carbon atoms.

...

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