Stabilizing sulfur cathode by single Li-ion channel polymer binder

phys.org | 11/5/2019 | Staff
doona07doona07 (Posted by) Level 3
Click For Photo: https://scx2.b-cdn.net/gfx/news/2019/stabilizings.jpg

The growing demands on high-performance energy-storage system for emerging technologies such as electric vehicles and artificial intelligence drive the development of high-performance batteries. As a promising candidate of next-generation batteries, Li-S batteries have been drawn much attention carrying a high specific capacity (1675 mAh g-1) and energy density (2600 Wh kg-1). However, the diffusion of polysulfide in electrolytes cause changes in the structure of the sulfur cathode during discharge-charge cycles, which greatly limits the commercial applications of Li-S batteries.

Polymer binder, as an essential component of electrodes, acts to bond the active material and is related to the performance of batteries. Unfortunately, the conventional binder has failed to meet the requirements of emerging batteries. For example, the PVDF binder exhibits low ionic conductivity of Li-ions, poor mechanical stability, and almost none inhibition on the shuttle of polysulfide, these factors limit the applications of Li-S batteries. Therefore, an ideal polymer binder which overcomes the drawback of conventional binders is urgently needed for Li-S batteries.

Research - National - Science - Review - Scientists

In new research published in the Beijing-based National Science Review, scientists at the Soochow Institute for Energy and Materials Innovations for Lithium-sulfur...
(Excerpt) Read more at: phys.org
Wake Up To Breaking News!
Sign In or Register to comment.

Welcome to Long Room!

Where The World Finds Its News!