Subscribe to our free daily newsletters
. 24/7 Space News .




Subscribe to our free daily newsletters



ENERGY TECH
Asphalt helps lithium batteries charge faster
by Staff Writers
Houston YX (SPX) Oct 05, 2017


Scanning electron microscope images show an anode of asphalt, graphene nanoribbons and lithium. The material was developed at Rice University and shows promise for high-capacity lithium batteries that charge up to 20 times faster than commercial lithium-ion batteries.

A touch of asphalt may be the secret to high-capacity lithium metal batteries that charge 10 to 20 times faster than commercial lithium-ion batteries, according to Rice University scientists.

The Rice lab of chemist James Tour developed anodes comprising porous carbon made from asphalt that showed exceptional stability after more than 500 charge-discharge cycles. A high-current density of 20 milliamps per square centimeter demonstrated the material's promise for use in rapid charge and discharge devices that require high-power density. The finding is reported in the American Chemical Society journal ACS Nano.

"The capacity of these batteries is enormous, but what is equally remarkable is that we can bring them from zero charge to full charge in five minutes, rather than the typical two hours or more needed with other batteries," Tour said.

The Tour lab previously used a derivative of asphalt - specifically, untreated gilsonite, the same type used for the battery - to capture greenhouse gases from natural gas. This time, the researchers mixed asphalt with conductive graphene nanoribbons and coated the composite with lithium metal through electrochemical deposition.

The lab combined the anode with a sulfurized-carbon cathode to make full batteries for testing. The batteries showed a high-power density of 1,322 watts per kilogram and high-energy density of 943 watt-hours per kilogram.

Testing revealed another significant benefit: The carbon mitigated the formation of lithium dendrites. These mossy deposits invade a battery's electrolyte. If they extend far enough, they short-circuit the anode and cathode and can cause the battery to fail, catch fire or explode. But the asphalt-derived carbon prevents any dendrite formation.

An earlier project by the lab found that an anode of graphene and carbon nanotubes also prevented the formation of dendrites. Tour said the new composite is simpler.

"While the capacity between the former and this new battery is similar, approaching the theoretical limit of lithium metal, the new asphalt-derived carbon can take up more lithium metal per unit area, and it is much simpler and cheaper to make," he said. "There is no chemical vapor deposition step, no e-beam deposition step and no need to grow nanotubes from graphene, so manufacturing is greatly simplified."

Research paper

ENERGY TECH
Hybrid indium-lithium anodes provide fast interfacial ion transport
Washington DC (SPX) Sep 27, 2017
Novel lithium electrodes coated with indium could be the basis for more powerful, longer-lasting, rechargeable batteries. The coating hinders undesirable side-reactions between the electrode and electrolyte, provide a more uniform deposition of lithium when charging, and augments storage in the lithium anode via alloying reactions between lithium and indium, as reported by American scientists in ... read more

Related Links
Rice University
Powering The World in the 21st Century at Energy-Daily.com


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

Comment using your Disqus, Facebook, Google or Twitter login.

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

ENERGY TECH
Space Cooperation Between China, Russia Needs Long-Term Mechanism

NASA's New Hubble E-Book Series Dives into the Solar System and Beyond

Mapping NASA's Space Missions

Aussie astronaut calls for establishment of national space agency

ENERGY TECH
What looks good on paper may look good in space

Demonstrator 3 linear aerospike ready to start tests

ISRO to resume satellite launches by December

Mechanisms are Critical to Space Vehicle Flight Success

ENERGY TECH
The Mars 2020 Rover features new spectral abilities with its new SuperCam

Devilish Source of Dust in Atmosphere of Earth and Mars

3-D Analysis Offers New Info on Martian Climate Change, Age of Polar Caps

HIAD heat shield material feels the burn during arc jet testing

ENERGY TECH
Mars probe to carry 13 types of payload on 2020 mission

China's cargo spacecraft separates from Tiangong-2 space lab

Work on China's mission to Mars 'well underway'

Chinese company eyes development of reusable launch vehicle

ENERGY TECH
The ESA 500: fostering start-up companies to use space technology on Earth

Thomas calls for new comprehensive Australian Space Agency at IAC address

AsiaSat 9 Set for Launch from Baikonur on September 29

Australia to create national space agency

ENERGY TECH
UV-irradiated amorphous ice behaves like liquid at low temperatures

The 3-D selfie has arrived

Ultracold atoms point toward an intriguing magnetic behavior

Researchers developing new technique that uses light to separate mirrored molecules

ENERGY TECH
Scientists propose new concept of terrestrial planet formation

The return of the comet-like exoplanet

New prediction of a detection wavelength for searching phototrophs on exoplanets

Hubble observes pitch black planet

ENERGY TECH
Solving the Mystery of Pluto's Giant Blades of Ice

Global Aerospace Corporation to present Pluto lander concept to NASA

Pluto features given first official names

Hibernation Over, New Horizons Continues Kuiper Belt Cruise




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. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. 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