Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Nanopower: Avoiding Electrolyte Failure in Nanoscale Lithum Batteries

Using a transmission electron microscope, NIST reearchers were able to watch individual nanosized batteries with electrolytes of different thicknesses charge and discharge. The NIST team discovered that there is likely a lower limit to how thin an electrolyte layer can be made before it causes the battery to malfunction.

Credit: Talin/NIST
Using a transmission electron microscope, NIST reearchers were able to watch individual nanosized batteries with electrolytes of different thicknesses charge and discharge. The NIST team discovered that there is likely a lower limit to how thin an electrolyte layer can be made before it causes the battery to malfunction.

Credit: Talin/NIST

Abstract:
It turns out you can be too thin—especially if you're a nanoscale battery. Researchers from the National Institute of Standards and Technology (NIST), the University of Maryland, College Park, and Sandia National Laboratories built a series of nanowire batteries to demonstrate that the thickness of the electrolyte layer can dramatically affect the performance of the battery, effectively setting a lower limit to the size of the tiny power sources.* The results are important because battery size and performance are key to the development of autonomous MEMS—microelectromechanical machines—which have potentially revolutionary applications in a wide range of fields.

Nanopower: Avoiding Electrolyte Failure in Nanoscale Lithum Batteries

Gaithersburg, MD | Posted on March 20th, 2012

MEMS devices, which can be as small as tens of micrometers (that is, roughly a tenth the width of a human hair), have been proposed for many applications in medicine and industrial monitoring, but they generally need a small, long-lived, fast-charging battery for a power source. Present battery technology makes it impossible to build these machines much smaller than a millimeter—most of which is the battery itself—which makes the devices terribly inefficient.

NIST researcher Alec Talin and his colleagues created a veritable forest of tiny—about 7 micrometers tall and 800 nanometers wide—solid-state lithium ion batteries to see just how small they could be made with existing materials and to test their performance.

Starting with silicon nanowires, the researchers deposited layers of metal (for a contact), cathode material, electrolyte, and anode materials with various thicknesses to form the miniature batteries. They used a transmission electron microscope (TEM) to observe the flow of current throughout the batteries and watch the materials inside them change as they charged and discharged.

The team found that when the thickness of the electrolyte film falls below a threshold of about 200 nanometers,** the electrons can jump the electrolyte border instead of flowing through the wire to the device and on to the cathode. Electrons taking the short way through the electrolyte—a short circuit—cause the electrolyte to break down and the battery to quickly discharge.

"What isn't clear is exactly why the electrolyte breaks down," says Talin. "But what is clear is that we need to develop a new electrolyte if we are going to construct smaller batteries. The predominant material, LiPON, just won't work at the thicknesses necessary to make practical high-energy-density rechargeable batteries for autonomous MEMS."

*D. Ruzmetov, V.P. Oleshko, P.M. Haney, H.J. Lezec, K. Karki, K.H. Baloch, A.K. Agrawal, A.V. Davydov, S. Krylyuk, Y. Liu, J. Huang, M. Tanase, J. Cumings and A.A. Talin. Electrolyte stability determines scaling limits for solid-state 3D Li-ion batteries, Nano Letters 12, 505-511 (2011).

** Represents the group's latest data collected after publication of the paper cited above.

####

About National Institute of Standards and Technology (NIST)
The National Institute of Standards and Technology (NIST) is an agency of the U.S. Department of Commerce.

For more information, please click here

Contacts:
Mark Esser
301-975-8735

Copyright © National Institute of Standards and Technology (NIST)

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

Nanostructures Increase Corrosion Resistance in Metallic Body Implants May 24th, 2015

Iranian Scientists Use Magnetic Field to Transfer Anticancer Drug to Tumor Tissue May 24th, 2015

Basel physicists develop efficient method of signal transmission from nanocomponents May 23rd, 2015

This Slinky lookalike 'hyperlens' helps us see tiny objects: The photonics advancement could improve early cancer detection, nanoelectronics manufacturing and scientists' ability to observe single molecules May 23rd, 2015

Laboratories

Visualizing How Radiation Bombardment Boosts Superconductivity: Atomic-level flyovers show how impact sites of high-energy ions pin potentially disruptive vortices to keep high-current superconductivity flowing May 23rd, 2015

Sandia researchers first to measure thermoelectric behavior by 'Tinkertoy' materials May 20th, 2015

Defects can 'Hulk-up' materials: Berkeley lab study shows properly managed damage can boost material thermoelectric performances May 20th, 2015

CLAIRE brings electron microscopy to soft materials: Berkeley researchers develop breakthrough technique for noninvasive nanoscale imaging May 14th, 2015

Govt.-Legislation/Regulation/Funding/Policy

This Slinky lookalike 'hyperlens' helps us see tiny objects: The photonics advancement could improve early cancer detection, nanoelectronics manufacturing and scientists' ability to observe single molecules May 23rd, 2015

Visualizing How Radiation Bombardment Boosts Superconductivity: Atomic-level flyovers show how impact sites of high-energy ions pin potentially disruptive vortices to keep high-current superconductivity flowing May 23rd, 2015

Nanotherapy effective in mice with multiple myeloma May 21st, 2015

Turn that defect upside down: Twin boundaries in lithium-ion batteries May 21st, 2015

MEMS

Janusz Bryzek Joins MEMS Industry Group to Lead New TSensors Division - New Division will Focus on Accelerating Development of Emerging Ultra-high Volume Sensors Supporting Abundance, mHealth and IoT May 14th, 2015

Phonons, arise! Small electric voltage alters conductivity in key materials April 22nd, 2015

Iranian Scientists Evaluate Dynamic Interaction between 2 Carbon Nanotubes April 14th, 2015

ASIC Development for MEMS Applications: A Platform Approach March 25th, 2015

Discoveries

Nanostructures Increase Corrosion Resistance in Metallic Body Implants May 24th, 2015

Iranian Scientists Use Magnetic Field to Transfer Anticancer Drug to Tumor Tissue May 24th, 2015

Basel physicists develop efficient method of signal transmission from nanocomponents May 23rd, 2015

This Slinky lookalike 'hyperlens' helps us see tiny objects: The photonics advancement could improve early cancer detection, nanoelectronics manufacturing and scientists' ability to observe single molecules May 23rd, 2015

Announcements

Nanostructures Increase Corrosion Resistance in Metallic Body Implants May 24th, 2015

Iranian Scientists Use Magnetic Field to Transfer Anticancer Drug to Tumor Tissue May 24th, 2015

Basel physicists develop efficient method of signal transmission from nanocomponents May 23rd, 2015

This Slinky lookalike 'hyperlens' helps us see tiny objects: The photonics advancement could improve early cancer detection, nanoelectronics manufacturing and scientists' ability to observe single molecules May 23rd, 2015

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

Turn that defect upside down: Twin boundaries in lithium-ion batteries May 21st, 2015

Evident Thermoelectrics Acquires GMZ Energy: Investment Accelerates Launch Of Evident's Thermoelectric Modules For Waste Heat May 20th, 2015

Sandia researchers first to measure thermoelectric behavior by 'Tinkertoy' materials May 20th, 2015

Defects can 'Hulk-up' materials: Berkeley lab study shows properly managed damage can boost material thermoelectric performances May 20th, 2015

Research partnerships

Supercomputer unlocks secrets of plant cells to pave the way for more resilient crops: IBM partners with University of Melbourne and UQ May 21st, 2015

Taking control of light emission: Researchers find a way of tuning light waves by pairing 2 exotic 2-D materials May 20th, 2015

Efficiency record for black silicon solar cells jumps to 22.1 percent: Aalto University's researchers improved their previous record by over 3 absolute percents in cooperation with Universitat Politècnica de Catalunya May 18th, 2015

Organic nanoparticles, more lethal to tumors: Carbon-based nanoparticles could be used to sensitize cancerous tumors to proton radiotherapy and induce more focused destruction of cancer cells, a new study shows May 18th, 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