Green Car Congress  
Go to GCC Discussions forum About GCC Contact  RSS Subscribe Twitter headlines

« US, UK and Australia drivers positive but concerned about autonomous vehicles | Main | Rusatom Overseas and CNNC New Energy to partner on floating nuclear power plants »

Print this post

U Texas team reports composite sulfur/lithium insertion cathode boosts performance over pure sulfur material

3 August 2014

In a paper in the Journal of Power Sources, Yu-Sheng Su and Arumugam Manthiram from the University of Texas report that a composite cathode material of titanium disulfide (TiS2) and sulfur delivered 252 mAh g−1 more than that of pristine sulfur cathode (1334 mAh g−1 vs. 1082 mAh g−1). The increased capacity is not only due to the contribution by TiS2 itself but also due to a better active-material dispersion and utilization, they found.

In their study, they replaced a portion of the carbon additives in sulfur cathodes with lithium-insertion compounds (VO2(B) and TiS2). These can work within the same voltage window as that of sulfur.

The found VO2(B) to be incompatible with the glyme-based electrolytes that are usually used in Li–S cells, but TiS2 performed well while coupled with sulfur.

Serving as active reaction sites during cycling, TiS2 suppresses agglomeration of sulfur and facilitates better ionic/electronic transport within the cathode structure. This composite cathode design provides another direction for Li–S batteries to improve the overall energy density.

—Su and Manthiram

Resources

  • Yu-Sheng Su, Arumugam Manthiram, Sulfur/lithium-insertion compound composite cathodes for Li–S batteries, Journal of Power Sources, Volume 270, Pages 101-105 doi: 10.1016/j.jpowsour.2014.07.099

August 3, 2014 in Brief | Permalink | Comments (0) | TrackBack (0)

TrackBack

TrackBack URL for this entry:
http://www.typepad.com/services/trackback/6a00d8341c4fbe53ef01a73dfa415f970d

Listed below are links to weblogs that reference U Texas team reports composite sulfur/lithium insertion cathode boosts performance over pure sulfur material :

Comments

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Working...
Your comment could not be posted. Error type:
Your comment has been posted. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.

Working...

Post a comment

Green Car Congress © 2014 BioAge Group, LLC. All Rights Reserved. | Home | BioAge Group