Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Nano-sized silicon oxide electrode for the next generation lithium ion batteries

15.07.2014

This article published in the Science and Technology of Advanced Materials reports an approach with industrial potential to produce nano-sized composite silicon-based powders as negative electrodes for the next generation lithium ion batteries.

The lithium ion battery market has been growing steadily and has been seeking an approach to increase battery capacity while retaining its capacity for long recharging process.


Lithium-ion battery testing

Copyright : Argonne National Laboratory / Flickr

Structuring materials for electrode at the nanometre-length scale has been known to be an effective way to meet this demand; however, such nanomaterials would essentially need to be produced by high throughput processing in order to transfer these technologies to industry.

This article published in the Science and Technology of Advanced Materials reports an approach which potentially has an industrially compatible high throughputs to produce nano-sized composite silicon-based powders as a strong candidate for the negative electrode of the next generation high density lithium ion batteries.

The authors have successfully produced nanocomposite SiO powders by plasma spray physical vapor deposition [1] using low cost metallurgical grade powders at high throughputs. Using this method, they demonstrated an explicit improvement in the battery capacity cycle performance with these powders as electrode.

The uniqueness of this processing method is that nanosized SiO composites are produced instantaneously through the evaporation and subsequent co-condensation of the powder feedstock. The approach is called plasma spray physical vapor deposition (PS-PVD). 

The composites are 20 nm particles, which are composed of a crystalline Si core and SiOx shell. Furthermore, the addition of methane (CH4) promotes the reduction of SiO and results in the decreased SiO-shell thickness.  The core-shell structure is formed in a single-step continuous processing.

As a result, the irreversible capacity was effectively decreased, and half-cell batteries made of PS-PVD powders have exhibited improved initial efficiency and maintenance of capacity as high as 1000 mAhg−1 after 100 cycles at the same time.


Reference:
Keiichiro Homma, Makoto Kambara, Toyonobu Yoshida: Sci. Technol. Adv. Mater. 15 (2014) 025006. http://dx.doi.org/10.1088/1468-6996/15/2/025006

[1] See, for instance, figures 1 and 3., J. Appl. Phys. 115, 143302 (2014); doi: 10.1063/1.4870600


For more information, contact
Dr. Makoto Kambara
Dept. Materials Engineering
The University of Tokyo
Email: mkambara@plasma.t.u-tokyo.ac.jp

Associated links

Mikiko Tanifuji | Research SEA News
Further information:
http://www.nims.go.jp/eng/
http://www.researchsea.com

Further reports about: Nano-sized Science Technology batteries battery capacity continuous electrode evaporation materials method powders processing

More articles from Materials Sciences:

nachricht 3-D printing produces cartilage from strands of bioink
27.06.2016 | Penn State

nachricht Nanoscientists develop the 'ultimate discovery tool'
24.06.2016 | Northwestern University

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Flexible OLED applications arrive

R2D2, a joint project to analyze and development high-TRL processes and technologies for manufacture of flexible organic light-emitting diodes (OLEDs) funded by the German Federal Ministry of Education and Research (BMBF) has been successfully completed.

In contrast to point light sources like LEDs made of inorganic semiconductor crystals, organic light-emitting diodes (OLEDs) are light-emitting surfaces. Their...

Im Focus: Unexpected flexibility found in odorant molecules

High resolution rotational spectroscopy reveals an unprecedented number of conformations of an odorant molecule – a new world record!

In a recent publication in the journal Physical Chemistry Chemical Physics, researchers from the Max Planck Institute for the Structure and Dynamics of Matter...

Im Focus: 3-D printing produces cartilage from strands of bioink

Strands of cow cartilage substitute for ink in a 3D bioprinting process that may one day create cartilage patches for worn out joints, according to a team of engineers. "Our goal is to create tissue that can be used to replace large amounts of worn out tissue or design patches," said Ibrahim T. Ozbolat, associate professor of engineering science and mechanics. "Those who have osteoarthritis in their joints suffer a lot. We need a new alternative treatment for this."

Cartilage is a good tissue to target for scale-up bioprinting because it is made up of only one cell type and has no blood vessels within the tissue. It is...

Im Focus: First experimental quantum simulation of particle physics phenomena

Physicists in Innsbruck have realized the first quantum simulation of lattice gauge theories, building a bridge between high-energy theory and atomic physics. In the journal Nature, Rainer Blatt‘s and Peter Zoller’s research teams describe how they simulated the creation of elementary particle pairs out of the vacuum by using a quantum computer.

Elementary particles are the fundamental buildings blocks of matter, and their properties are described by the Standard Model of particle physics. The...

Im Focus: Is There Life On Mars?

Survivalist back from Space - 18 months on the outer skin of the ISS

A year and a half on the outer wall of the International Space Station ISS in altitude of 400 kilometers is a real challenge. Whether a primordial bacterium...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Conference ‘GEO BON’ Wants to Close Knowledge Gaps in Global Biodiversity

28.06.2016 | Event News

ERES 2016: The largest conference in the European real estate industry

09.06.2016 | Event News

Networking 4.0: International Laser Technology Congress AKL’16 Shows New Ways of Cooperations

24.05.2016 | Event News

 
Latest News

Rotating ring of complex organic molecules discovered around newborn star

28.06.2016 | Physics and Astronomy

Unidentified spectra detector

28.06.2016 | Life Sciences

Clandestine black hole may represent new population

28.06.2016 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>