Featured Research

from universities, journals, and other organizations

Brookhaven Lab Researchers Develop A Method For Producing Electrodes Using Nanoscale Materials

Date:
April 30, 2002
Source:
Brookhaven National Laboratory
Summary:
Using nanoscale materials, researchers from the U.S. Department of Energy’s Brookhaven National Laboratory have developed a method to make electrodes that are suitable for use in rechargeable lithium ion batteries and other electronic devices. Because so many new and different materials can be made with this versatile method, it should be capable of producing electrodes that are more efficient and durable than those in use today.

UPTON, NY — Using nanoscale materials, researchers from the U.S. Department of Energy’s Brookhaven National Laboratory have developed a method to make electrodes that are suitable for use in rechargeable lithium ion batteries and other electronic devices. Because so many new and different materials can be made with this versatile method, it should be capable of producing electrodes that are more efficient and durable than those in use today.

Related Articles


Among the advantages of the new method as it applies to lithium ion batteries are that lithium alloys can be produced ex situ rather than by an initial activation process inside the battery. This makes the battery production process simpler and less time-consuming. Most importantly, the method allows great flexibility in choice of materials and makes possible the production of novel alloy compositions.

“Since unique alloys can be created using this method, the opportunity exists for making new types of electrodes with superior properties,” Brookhaven’s James Reilly, the principal researcher on the project, said. “Also, the method could likely be used in a number of other applications, including the preparation of nanocomposite catalysts.”

To make a lithium tin electrode, for example, the researchers mixed excess lithium hydride with tin oxide. Part of the lithium hydride reacts to form lithium oxide while the remainder reacts to form a lithium tin alloy. Hydrogen is removed as a gas. After the initial formation of the lithium tin alloy and lithium oxide composite, hydrogen is alternately added and removed. This treatment results in the formation of a nanocomposite material made of tiny grains with a diameter of 20-30 nanometers (one nanometer is a billionth of a meter). This small grain size makes the electrochemical reaction go faster because there is more surface area upon which the reaction can take place. The lithium oxide acts as inert support for the electrochemically active lithium tin alloy.

The researchers also mixed lithium aluminum hydride with tin oxide, and lithium aluminum hydride with silicon oxide to make similar nanocomposite electrodes. Reilly maintains that any one of the many elements that form stable metal hydrides could be used to make nanocomposite materials with the method created by his Brookhaven team.

Hydrogen is the key to forming nanocomposite materials in this new method. The hydrogen atoms are successively absorbed and desorbed from the lithium-tin alloy many times until it is broken down into tiny alloy grains. This chemical means of making nanocomposites is much more effective and practical than physically grinding materials to produce fine particles.

This research was funded by Office of Chemical Sciences of the U.S. Department of Energy. A patent is pending for this new method, and it is available for licensing by industry.

The U.S. Department of Energy’s Brookhaven National Laboratory (http://www.bnl.gov) conducts research in the physical, biomedical, and environmental sciences, as well as in energy technologies. Brookhaven also builds and operates major facilities available to university, industrial, and government scientists. The Laboratory is managed by Brookhaven Science Associates, a limited liability company founded by Stony Brook University and Battelle, a nonprofit applied science and technology organization.


Story Source:

The above story is based on materials provided by Brookhaven National Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

Brookhaven National Laboratory. "Brookhaven Lab Researchers Develop A Method For Producing Electrodes Using Nanoscale Materials." ScienceDaily. ScienceDaily, 30 April 2002. <www.sciencedaily.com/releases/2002/04/020430075700.htm>.
Brookhaven National Laboratory. (2002, April 30). Brookhaven Lab Researchers Develop A Method For Producing Electrodes Using Nanoscale Materials. ScienceDaily. Retrieved March 28, 2015 from www.sciencedaily.com/releases/2002/04/020430075700.htm
Brookhaven National Laboratory. "Brookhaven Lab Researchers Develop A Method For Producing Electrodes Using Nanoscale Materials." ScienceDaily. www.sciencedaily.com/releases/2002/04/020430075700.htm (accessed March 28, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Saturday, March 28, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Inspectors Found Faulty Work Before NYC Blast

Inspectors Found Faulty Work Before NYC Blast

AP (Mar. 27, 2015) An hour before an apparent gas explosion sent flames soaring and debris flying at a Manhattan apartment building, injuring 19 people, utility company inspectors decided the work being done there was faulty. (March 27) Video provided by AP
Powered by NewsLook.com
Facebook Building Plane-Sized Drones For Global Internet

Facebook Building Plane-Sized Drones For Global Internet

Newsy (Mar. 27, 2015) Facebook on Thursday revealed more details about its Internet-connected drone project. The drone is bigger than a 737, but lighter than a car. Video provided by Newsy
Powered by NewsLook.com
Robot Returns from International Space Station and Sets Two Guinness World Records

Robot Returns from International Space Station and Sets Two Guinness World Records

Reuters - Light News Video Online (Mar. 27, 2015) The companion robot "Kirobo" returns to earth from the International Space Station and sets two Guinness World Records. Sharon Reich reports. Video provided by Reuters
Powered by NewsLook.com
Residents Witness Building Explosion, Collapse

Residents Witness Building Explosion, Collapse

AP (Mar. 26, 2015) Witnesses recount the sites and sounds of a massive explosion and subsequent building collapse in the heart of Manhattan&apos;s trendy East Village on Thursday. (March 26) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins