Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > New Argonne coating could have big implications for lithium batteries

Argonne scientists have developed a new coating (shown in blue) for battery cathodes that can improve the electronic and ionic conductivity of a battery while improving its safety and cycling performance.

CREDIT
Argonne National Laboratory
Argonne scientists have developed a new coating (shown in blue) for battery cathodes that can improve the electronic and ionic conductivity of a battery while improving its safety and cycling performance. CREDIT Argonne National Laboratory

Abstract:
Coating provides extra layer of protection for battery cathodes.

Building a better lithium-ion battery involves addressing a myriad of factors simultaneously, from keeping the battery's cathode electrically and ionically conductive to making sure that the battery stays safe after many cycles.

New Argonne coating could have big implications for lithium batteries

Argonne, IL | Posted on May 14th, 2019

In a new discovery, scientists at the U.S. Department of Energy's (DOE) Argonne National Laboratory have developed a new cathode coating by using an oxidative chemical vapor deposition technique that can help solve these and several other potential issues with lithium-ion batteries all in one stroke.

"The coating we've discovered really hits five or six birds with one stone." Khalil Amine, Argonne distinguished fellow and battery scientist.

In the research, Amine and his fellow researchers took particles of Argonne's pioneering nickel-manganese-cobalt (NMC) cathode material and encapsulated them with a sulfur-containing polymer called PEDOT. This polymer provides the cathode a layer of protection from the battery's electrolyte as the battery charges and discharges.

Unlike conventional coatings, which only protect the exterior surface of the micron-sized cathode particles and leave the interior vulnerable to cracking, the PEDOT coating had the ability to penetrate to the cathode particle's interior, adding an additional layer of shielding.

In addition, although PEDOT prevents the chemical interaction between the battery and the electrolyte, it does allow for the necessary transport of lithium ions and electrons that the battery requires in order to function.

"This coating is essentially friendly to all of the processes and chemistry that makes the battery work and unfriendly to all of the potential reactions that would cause the battery to degrade or malfunction," said Argonne chemist Guiliang Xu, the first author of the research.

The coating also largely prevents another reaction that causes the battery's cathode to deactivate. In this reaction, the cathode material converts to another form called spinel. "The combination of almost no spinel formation with its other properties makes this coating a very exciting material," Amine said.

The PEDOT material also demonstrated the ability to prevent oxygen release, a major factor for the degradation of NMC cathode materials at high voltage. "This PEDOT coating was also found to be able to suppress oxygen release during charging, which leads to better structural stability and also improves safety," Amine said.

Amine indicated that battery scientists could likely scale up the coating for use in nickel-rich NMC-containing batteries. "This polymer has been around for a while, but we were still surprised to see that it has all of the encouraging effects that it does," he said.

With the coating applied, the researchers believe that the NMC-containing batteries could either run at higher voltages -- thus increasing their energy output -- or have longer lifetimes, or both.

"The coating we've discovered really hits five or six birds with one stone," said Argonne distinguished fellow and battery scientist Khalil Amine, who led the research.

To perform the research, the scientists relied on two DOE Office of Science User Facilities located at Argonne: the Advanced Photon Source (APS) and the Center for Nanoscale Materials (CNM). In situ high-energy X-ray diffraction measurements were taken at beamline 11-ID-C of the APS, and focused ion beam lithography and transmission electron microscopy were performed at the CNM.

###


The research was funded by DOE's Office of Science, Office of Basic Energy Sciences and the Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office.

The Office of Energy Efficiency and Renewable Energy supports early-stage research and development of energy efficiency and renewable energy technologies to strengthen U.S. economic growth, energy security, and environmental quality.

####

About Argonne National Laboratory
Argonne National Laboratory seeks solutions to pressing national problems in science and technology. The nation's first national laboratory, Argonne conducts leading-edge basic and applied scientific research in virtually every scientific discipline. Argonne researchers work closely with researchers from hundreds of companies, universities, and federal, state and municipal agencies to help them solve their specific problems, advance America's scientific leadership and prepare the nation for a better future. With employees from more than 60 nations, Argonne is managed by UChicago Argonne, LLC for the U.S. Department of Energy's Office of Science.

The U.S. Department of Energy's Office of Science is the single largest supporter of basic research in the physical sciences in the United States and is working to address some of the most pressing challenges of our time. For more information, visit the Office of Science website.

For more information, please click here

Contacts:
Benjamin Schiltz

630-252-5640

Copyright © Argonne National Laboratory

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 Links

A paper based on the study, "Building ultra-conformal protective layers on both secondary and primary particles of layered lithium transition metal oxide cathodes," appeared in the May 13 online edition of Nature Energy. Other Argonne authors included Yuzi Liu, Xiang Liu, Han Gao, Minghao Zhuang, Yang Ren and Zonghai Chen. Researchers from Drexel University, Indiana University-Purdue University Indianapolis, and four Chinese universities also collaborated.:

Related News Press

News and information

Nanometrics to Announce Second Quarter Financial Results on July 30, 2019 July 17th, 2019

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

An 'EpiPen' for spinal cord injuries July 12th, 2019

Imaging

Caught in the act: Images capture molecular motions in real time July 15th, 2019

Govt.-Legislation/Regulation/Funding/Policy

Caught in the act: Images capture molecular motions in real time July 15th, 2019

An 'EpiPen' for spinal cord injuries July 12th, 2019

The best of both worlds: how to solve real problems on modern quantum computers July 12th, 2019

What happens when you explode a chemical bond? Attosecond laser technique yields movies of chemical bond dissociation July 12th, 2019

Possible Futures

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

Dresden physicists use nanostructures to free photons for highly efficient white OLEDs: Trapped light particles July 12th, 2019

Strange warping geometry helps to push scientific boundaries July 12th, 2019

Discoveries

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

Strange warping geometry helps to push scientific boundaries July 12th, 2019

Announcements

Nanometrics to Announce Second Quarter Financial Results on July 30, 2019 July 17th, 2019

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

An 'EpiPen' for spinal cord injuries July 12th, 2019

Tools

Nanometrics to Announce Second Quarter Financial Results on July 30, 2019 July 17th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

Nanotechnology delivers hepatitis B vaccine: X-ray imaging shows that nanostructured silica acts as a protective vehicle to deliver intact antigen to the intestine so that it can trigger an immune response. The material can give rise to a polyvaccine against six diseases July 12th, 2019

Engineers revolutionize molecular microscopy: Single molecules measure electrical potentials July 12th, 2019

Automotive/Transportation

Activity of fuel cell catalysts doubled: Modelling leads to the optimum size for platinum fuel cell catalysts July 5th, 2019

Good vibrations: Using piezoelectricity to ensure hydrogen sensor sensitivity May 24th, 2019

Transforming waste heat into clean energy: Researchers use supercomputers to explore new materials for thermoelectric generation May 2nd, 2019

Magnetoresistive sensors for near future innovative development March 22nd, 2019

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

Researchers report new understanding of thermoelectric materials: Discovery leads to promising new materials for converting waste heat to power June 21st, 2019

Flexible generators turn movement into energy: Rice University's laser-induced graphene nanogenerators could power future wearables June 2nd, 2019

Russian scientists investigate new materials for Li-ion batteries of miniature sensors: Researchers are developing new materials for solid-state thin-film Li-ion batteries for micro and nanodevices May 31st, 2019

Building next gen smart materials with the power of sound May 28th, 2019

Research partnerships

The best of both worlds: how to solve real problems on modern quantum computers July 12th, 2019

Sheaths drive powerful new artificial muscles July 11th, 2019

Activity of fuel cell catalysts doubled: Modelling leads to the optimum size for platinum fuel cell catalysts July 5th, 2019

Spontaneous synchronisation achieved at the nanoscale July 4th, 2019

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



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project