Entrapment of Polysulfides by a Black-Phosphorus-Modified Separator for Lithium-Sulfur Batteries

Jie Sun; Yongming Sun; Mauro Pasta; Guangmin Zhou; Yuzhang Li; Wei Liu; Feng Xiong; Yi Cui

doi:10.1002/adma.201602172

Entrapment of Polysulfides by a Black-Phosphorus-Modified Separator for Lithium-Sulfur Batteries

Adv Mater. 2016 Nov;28(44):9797-9803. doi: 10.1002/adma.201602172. Epub 2016 Sep 16.

Authors

Jie Sun¹, Yongming Sun¹, Mauro Pasta², Guangmin Zhou¹, Yuzhang Li¹, Wei Liu¹, Feng Xiong¹, Yi Cui^{1

3}

Affiliations

¹ Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.
² Department of Materials, University of Oxford, 16 Parks Road, Oxford, OX1 3PH, UK.
³ Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.

PMID: 27634105
DOI: 10.1002/adma.201602172

Abstract

A bifunctional separator modified by black-phosphorus nanoflakes is prepared to overcome the challenges associated with the polysulfide diffusion in lithium-sulfur batteries. It brings the benefits of the entrapment of various sulfur species via the strong binding energy and re-activation of the trapped sulfur species due to its high electron conductivity as well as Li-ion diffusivity.

Keywords: DFT calculations; black phosphorus; lithium-sulfur batteries; polysulfides; separators.