Emerging Technologies

These robots can store energy in 'fat reserves' like humans

Batteries.

Typical robot designs occupy 20% or more of the space available inside the robot. Image: Unsplash

Victor Tangermann
Writer and Photo Editor, Futurism
Share:
Our Impact
What's the World Economic Forum doing to accelerate action on Emerging Technologies?
The Big Picture
Explore and monitor how Energy Transition is affecting economies, industries and global issues
A hand holding a looking glass by a lake
Crowdsource Innovation
Get involved with our crowdsourced digital platform to deliver impact at scale
Stay up to date:

Energy Transition

  • Scientists from the University of Michigan have created 'biomorphic batteries' that allow robots to store energy like humans.
  • Battery capacity is increased, utilizing the outside of the robot as a battery.
  • It's estimated that the robots could have 72x more power if batteries have been replaced by zinc batteries.

A team of scientists at the University of Michigan have created “biomorphic batteries” that allow robots to store energy like humans — in fat reserves spread across their bodies.

The idea is to greatly increase the battery capacity of robots by mimicking the distributed energy sources of living beings, and as it turns out, the new batteries may also hold far more power than the conventional lithium ion variety.

Have you read?

“Robot designs are restricted by the need for batteries that often occupy 20 percent or more of the available space inside a robot, or account for a similar proportion of the robot’s weight,” Nicholas Kotov, professor of engineering at the University of Michigan and lead researcher on the project, said in a statement.

Loading...

According to the team, their new zinc battery could greatly increase energy density.

“We estimate that robots could have 72 times more power capacity if their exteriors were replaced with zinc batteries, compared to having a single lithium ion battery,” Mingqiang Wang, first author of a paper about the research published in the journal Science Robotics today, said in the statement.

They’re also more flexible in terms of where they can be mounted to a robot, and can serve multiple functions at once.

“Batteries that can do double duty — to store charge and protect the robot’s ‘organs’ — replicate the multifunctionality of fat tissues serving to store energy in living creatures,” Ahmet Emre, a doctoral student in biomedical engineering, said in the statement.

“We don’t have a single sac of fat, which would be bulky and require a lot of costly energy transfer,” Kotov added. “Distributed energy storage, which is the biological way, is the way to go for highly efficient biomorphic devices.”

The battery passes hydroxide ions between a zinc electrode and the air through a special “aramid nanofiber”-coated membrane. These materials are found in Kevlar vests and water-based polymer gels, and are largely nontoxic. That means, compared to lithium-ion batteries, the new zinc batteries are far more environmentally friendly.

But they do have an Achilles’ heel: they’re only able to maintain high capacity for about 100 charge cycles, falling far short of lithium-ion ones. Fortunately, replacing them would not only be relatively cheap, but the researchers say they could easily be recycled as well.

Loading...
Loading...
Don't miss any update on this topic

Create a free account and access your personalized content collection with our latest publications and analyses.

Sign up for free

License and Republishing

World Economic Forum articles may be republished in accordance with the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License, and in accordance with our Terms of Use.

The views expressed in this article are those of the author alone and not the World Economic Forum.

Related topics:
Emerging TechnologiesEnergy Transition
Share:
World Economic Forum logo
Global Agenda

The Agenda Weekly

A weekly update of the most important issues driving the global agenda

Subscribe today

You can unsubscribe at any time using the link in our emails. For more details, review our privacy policy.

Why AI is the new frontier global trade must learn to cross

Patrick McMaster

October 9, 2024

About us

Engage with us

  • Sign in
  • Partner with us
  • Become a member
  • Sign up for our press releases
  • Subscribe to our newsletters
  • Contact us

Quick links

Language editions

Privacy Policy & Terms of Service

Sitemap

© 2024 World Economic Forum