Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Air Force support for a new generation of lithium-ion batteries: New graphene technique can significantly increase the storage capacity of lithium ion by combining graphene nanoribbons with tin oxide

Abstract:
A few months back, the Air Force Office of Scientific Research (AFOSR) was proud to publish an article regarding a research accomplishment by Dr. Jim Tour and his research team at Rice University. AFOSR, along with other funding agencies, supported Dr. Tour's research effort to make graphene suitable for a variety of organic chemistry applications -- especially the promise of advanced chemical sensors, nanoscale electronic circuits and metamaterials.

Air Force support for a new generation of lithium-ion batteries: New graphene technique can significantly increase the storage capacity of lithium ion by combining graphene nanoribbons with tin oxide

Arlington, VA | Posted on July 15th, 2013

Four years ago, Tour's research team demonstrated that they could chemically unzip cylindrical shaped carbon nanotubes into soluble graphene nanoribbons (GNR) without compromising the electronic properties of the graphitic structure. A recent paper by the Tour team, published in IEEE Spectrum and partially funded by AFOSR, showed that GNR can significantly increase the storage capacity of lithium ion (Li-ion) by combining graphene nanoribbons with tin oxide.

By producing GNR in bulk, a necessary requirement for making this a viable process, the Tour team mixes GNR and 10 nanometer wide particles of tin oxide to create a slurry. By adding a cellulose gum binding agent and water, the mixture is then applied to a capacitor, which is then fitted to a button-style lithium-ion battery.

In the Tour lab tests, the prototype battery had an initial charge capacity of more than 1,520 milliamp hours per gram (mAh/g). After repeated charge-discharge cycles that number began to plateau at about 825 mAh/g, but after 50 discharge cycles, the batteries retained far more capacity -- more than double -- that of Li-ion batteries that employ standard graphite anodes.

The critical key that makes the increase in battery capacity possible is the significant improvement in flexibility that graphene nanoribbons lend to the anode. By comparison, conventional Li-ion batteries with graphite anodes break down and lose efficiency because of their inability to flex, as they expand and contract, with repeated charge and discharge cycles; over time the graphite cracks and the battery cannot charge. Conversely, anodes with a graphene nanoribbon platform allow the tin oxide particles to maintain a consistent size, rather than expanding and contracting, and thus eliminating the brittleness and cracking associated with a graphite-based anode.

This breakthrough may very well lead to the next generation of the lithium-ion battery -- a promising new platform for creating more durable, lightweight and efficient lithium-ion power.

####

For more information, please click here

Contacts:
Robert White

703-588-0665

Copyright © Air Force Office of Scientific Research

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Sol-gel capacitor dielectric offers record-high energy storage July 30th, 2015

Controlling Dynamic Behavior of Carbon Nanosheets in Structures Made Possible July 30th, 2015

Newly-Developed Polymers Control Size of Nanoparticles during Production Process July 30th, 2015

Detecting small metallic contaminants in food via magnetization: A practical metallic-contaminant detecting system using three high-Tc RF superconducting quantum interference devices (SQUIDs) July 29th, 2015

Controlling phase changes in solids: Controlling phase changes in solids July 29th, 2015

Graphene

March 2016; 6th Int'l Conference on Nanostructures in Iran July 29th, 2015

Stretching the limits on conducting wires July 25th, 2015

Govt.-Legislation/Regulation/Funding/Policy

Sol-gel capacitor dielectric offers record-high energy storage July 30th, 2015

Pakistani Students Who Survived Terror Attack to Attend Weeklong “NanoDiscovery Institute” at SUNY Poly CNSE in Albany July 29th, 2015

Meet the high-performance single-molecule diode: Major milestone in molecular electronics scored by Berkeley Lab and Columbia University team July 29th, 2015

New computer model could explain how simple molecules took first step toward life: Two Brookhaven researchers developed theoretical model to explain the origins of self-replicating molecules July 28th, 2015

Sensors

Controlling Dynamic Behavior of Carbon Nanosheets in Structures Made Possible July 30th, 2015

Non-Enzyme Sensor Determines Level of Blood Sugar July 29th, 2015

American Chemical Society expands reach to include rapidly emerging area of sensor science July 25th, 2015

UT Dallas nanotechnology research leads to super-elastic conducting fibers July 24th, 2015

Discoveries

Sol-gel capacitor dielectric offers record-high energy storage July 30th, 2015

Controlling Dynamic Behavior of Carbon Nanosheets in Structures Made Possible July 30th, 2015

Newly-Developed Polymers Control Size of Nanoparticles during Production Process July 30th, 2015

Non-Enzyme Sensor Determines Level of Blood Sugar July 29th, 2015

Materials/Metamaterials

Sol-gel capacitor dielectric offers record-high energy storage July 30th, 2015

Controlling Dynamic Behavior of Carbon Nanosheets in Structures Made Possible July 30th, 2015

Newly-Developed Polymers Control Size of Nanoparticles during Production Process July 30th, 2015

March 2016; 6th Int'l Conference on Nanostructures in Iran July 29th, 2015

Announcements

Sol-gel capacitor dielectric offers record-high energy storage July 30th, 2015

Controlling Dynamic Behavior of Carbon Nanosheets in Structures Made Possible July 30th, 2015

Newly-Developed Polymers Control Size of Nanoparticles during Production Process July 30th, 2015

Detecting small metallic contaminants in food via magnetization: A practical metallic-contaminant detecting system using three high-Tc RF superconducting quantum interference devices (SQUIDs) July 29th, 2015

Military

Sol-gel capacitor dielectric offers record-high energy storage July 30th, 2015

Smart hydrogel coating creates 'stick-slip' control of capillary action July 27th, 2015

Researchers predict material with record-setting melting point July 27th, 2015

Reshaping the solar spectrum to turn light to electricity: UC Riverside researchers find a way to use the infrared region of the sun's spectrum to make solar cells more efficient July 27th, 2015

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

Sol-gel capacitor dielectric offers record-high energy storage July 30th, 2015

Stretching the limits on conducting wires July 25th, 2015

BESSTECH’s Innovative Battery Technology is Highlighted During Featured Presentations at SEMICON West 2015: CEO Fernando Gómez-Baquero delivers invited remarks at the event’s Silicon Innovation Forum and Semiconductor Technology Symposium July 16th, 2015

Molecular fuel cell catalysts hold promise for efficient energy storage July 16th, 2015

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project