Advances in lithium —sulfur batteries

Publication date: November 2017 Source:Materials Science and Engineering: R: Reports, Volume 121 Author(s): X. Zhang, H. Xie, C.-S. Kim, K. Zaghib, A. Mauger, C.M. Julien This review is focused on the state-of-the-art of lithium-sulfur batteries. The great advantage of these energy storage devices in view of their theoretical specific capacity (2500Whkg−1, 2800WhL−1, assuming complete reaction to Li2S) has been the motivation for a huge amount of works. However, these batteries suffer of disadvantages that have restricted their applications such as high electrical resistance, capacity fading, self-discharge, mainly due to the so-called shuttle effect. Strategies have been developed with the recent modifications that have been proposed as a remedy to the shuttle effect, and the insulating nature of the polysulfides. All the elements of the battery are concerned and the solution, as we present herewith, is a combination of modification of the cathode, of the separator, of the electrolyte, including the choice of binder, even though few binder-free architectures have now been proposed. Graphical abstract
Source: Materials Science and Engineering: R: Reports - Category: Materials Science Source Type: research