Subscribe free to our newsletters via your
. 24/7 Space News .




Subscribe free to our newsletters via your




















ENERGY TECH
Squishy supercapacitors bathed in green tea could power wearable electronics
by Staff Writers
Washington DC (SPX) Feb 17, 2017


File image.

Wearable electronics are here - the most prominent versions are sold in the form of watches or sports bands. But soon, more comfortable products could become available in softer materials made in part with an unexpected ingredient: green tea.

Researchers report in ACS' The Journal of Physical Chemistry C a new flexible and compact rechargeable energy storage device for wearable electronics that is infused with green tea polyphenols.

Powering soft wearable electronics with a long-lasting source of energy remains a big challenge. Supercapacitors could potentially fill this role - they meet the power requirements, and can rapidly charge and discharge many times.

But most supercapacitors are rigid, and the compressible supercapacitors developed so far have run into roadblocks.

They have been made with carbon-coated polymer sponges, but the coating material tends to bunch up and compromise performance. Guruswamy Kumaraswamy, Kothandam Krishnamoorthy and colleagues wanted to take a different approach.

The researchers prepared polymer gels in green tea extract, which infuses the gel with polyphenols. The polyphenols converted a silver nitrate solution into a uniform coating of silver nanoparticles. Thin layers of conducting gold and poly(3,4-ethylenedioxythiophene) were then applied.

And the resulting supercapacitor demonstrated power and energy densities of 2,715 watts per kilogram and 22 watt-hours per kilogram - enough to operate a heart rate monitor, LEDs or a Bluetooth module.

The researchers tested the device's durability and found that it performed well even after being compressed more than 100 times.

Research paper


Comment on this article using your Disqus, Facebook, Google or Twitter login.

Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

.


Related Links
American Chemical Society
Powering The World in the 21st Century at Energy-Daily.com






Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

Previous Report
ENERGY TECH
Looking for the next leap in rechargeable batteries
Los Angeles CA (SPX) Feb 17, 2017
USC researchers may have just found a solution for one of the biggest stumbling blocks to the next wave of rechargeable batteries - small enough for cellphones and powerful enough for cars. In a paper published in the January issue of the Journal of the Electrochemical Society, Sri Narayan and Derek Moy of the USC Loker Hydrocarbon Research Institute outline how they developed an alteration to t ... read more


ENERGY TECH
Art and space enter a new dimension

Air Force doctor solves NASA's poop problem

Next SpaceX mission will deliver slew of experiment payloads to ISS

Endurance athletes: Swig mouthwash for improved performance

ENERGY TECH
SpaceX blasts off cargo from historic NASA launchpad

SpaceX aborts launch after 'odd' rocket engine behavior

Airbus Safran Launchers: 77th consecutive successful launch for Ariane 5

India puts record 104 satellites into orbit

ENERGY TECH
Researchers pinpoint watery past on Mars

Scientists say Mars valley was flooded with water not long ago

Opportunity passes 44 kilometers of surface travel after 13 years

Scientists shortlist three landing sites for Mars 2020

ENERGY TECH
Chinese cargo spacecraft set for liftoff in April

China looks to Mars, Jupiter exploration

China's first cargo spacecraft to leave factory

China launches commercial rocket mission Kuaizhou-1A

ENERGY TECH
Iridium Announces Target Date for Second Launch of Iridium NEXT

Italy, Russia working closely on Mars exploration, Earth monitoring satellites

NASA seeks partnerships with US companies to advance commercial space technologies

A New Space Paradigm

ENERGY TECH
Most stretchable elastomer for 3-D printing

New mechanical metamaterials can block symmetry of motion

Sky and Space signs agreement with US Department of Defence

Curtiss-Wright offers COTS Module for measuring microgravity acceleration

ENERGY TECH
Hunting for runaway worlds

Exoplanetary moons formed by giant impacts could be detected by Kepler

The heart of a far-off star beats for its planet

Possibility of Silicon-Based Life Grows

ENERGY TECH
NASA receives science report on Europa lander concept

New Horizons Refines Course for Next Flyby

It's Never 'Groundhog Day' at Jupiter

Public to Choose Jupiter Picture Sites for NASA Juno




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News








The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement