Wednesday, November 28, 2012

Improving Irreversibility Capacity of Lithium-Rich Cathode Materials via Solid State Delithiation

Lithium Battery Power 2012
December 4-5 2012, Las Vegas, NV, USA
Advances in Lithium Ion Battery Technologies for Commercial & Military Applications
Improving Irreversibility Capacity of Lithium-Rich Cathode Materials via Solid State Delithiation
- By David Keogh, Wildcat Discovery TechnologyCathodes based on lithium rich-NMC are a promising technology for next generation lithium-ion batteries, offering energy density improvements of >50% over current state of the art intercalation materials.
At the same time, a number of technical challenges still limit the commercialization of these materials, including a large irreversible capacity of up to 20% typically observed on first cycle that results in significant gas evolution, as well as poor rate performance.
To address this, Wildcat Discovery Technologies has recently developed a low-cost solid state activation process that improves the electrochemical performance of Li-rich NMC materials.
In this process, activation is accomplished using a solid state reaction that selectively removes stoichiometric amounts of lithium and oxygen from the crystal structure.




Monday, November 26, 2012

GM succeeds in applying magnesium sheet metal to vehicles

The weight-reduction results of applying magnesium (Mg) material to vehicle body are: Reduced by 33% of Al body, 60% of Ti body, and 75% of steel body.
GM has developed two technologies: 1) “thermal forming process for magnesium” and 2) “corrosion resistance treatment for thermal-formed magnesium”. GM is testing the new technologies #0.
“GM’s patented process turns up the heat on magnesium to 450 degrees Celsius (842 degrees Fahrenheit), allowing the material to be molded into precise, rigid shapes."
"GM’s proprietary treatment for thermal-formed magnesium resisted 10 consecutive weeks of 24-hour environmental tests involving salt spray, 100 percent humidity and extreme temperatures."

Saturday, November 24, 2012

Lithium Battery Power and Battery Safety 2012

- Over 45 Presentations and more than 110 organizations participating
- 参加組織は110以上、presentationが45以上
BOSTON, MA – The Knowledge Foundation has 2 upcoming key battery industry events conveniently located in Las Vegas, NV. Lithium Battery Power 2012 will take place December 4-5, 2012. Battery Safety 2012 will be taking place December 6-7, 2012. These meetings will showcase the very latest scientific developments from around the world from the leading organizations in their field. AIST, Honda R&D Americas, ...

Thursday, November 22, 2012

"Titanium Oxide Decorated Carbon Nanofiber Webs as Flexible Binder-Free Anode Materials for Lithium-ion Batteries"

Lithium Battery Power 2012  December 4-5 2012  Las Vegas, NV, USA
Advances in Lithium Ion Battery Technologies for Commercial & Military Applications
"Titanium Oxide Decorated Carbon Nanofiber Webs as Flexible Binder-Free Anode Materials for Lithium-ion Batteries" - By Yunhua Yu, PhD, Beijing University of Chemical Technology, China
Titanium oxides have been considered as potential alternative materials to traditional carbon-based anodes due to fast charge-discharge capability and better safety.
However, the rate capability of the Ti-based oxides is relatively low because of a large polarization at high charge-discharge rates resulting from the poor electrical conductivity and sluggish lithium-ion diffusion.
In this work, in order to overcome these drawbacks, a favorable method of distributing TiO2-Bnanowires on carbon nanofibers (CNFs) by using electro spinning technique and hydrothermal treatment was proposed to prepare TiO2-B/CNFs composite as a flexible binder-free anode material for Li-ion batteries.
For More Information Click Here

Note: Previous blogs are located in "FuelCell japan-1"