skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Authors:
 [1];  [1];  [2];  [1];  [1];  [1];  [1];  [3]
  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. Department of Materials Science and Engineering, Stanford University, Stanford CA 94305 USA; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road Menlo Park CA 94025 USA
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1360180
DOE Contract Number:
AC02-76SF00515
Resource Type:
Journal Article
Resource Relation:
Journal Name: Advanced Materials; Journal Volume: 28; Journal Issue: 44
Country of Publication:
United States
Language:
English

Citation Formats

Sun, Jie, Sun, Yongming, Pasta, Mauro, Zhou, Guangmin, Li, Yuzhang, Liu, Wei, Xiong, Feng, and Cui, Yi. Entrapment of Polysulfides by a Black-Phosphorus-Modified Separator for Lithium-Sulfur Batteries. United States: N. p., 2016. Web. doi:10.1002/adma.201602172.
Sun, Jie, Sun, Yongming, Pasta, Mauro, Zhou, Guangmin, Li, Yuzhang, Liu, Wei, Xiong, Feng, & Cui, Yi. Entrapment of Polysulfides by a Black-Phosphorus-Modified Separator for Lithium-Sulfur Batteries. United States. doi:10.1002/adma.201602172.
Sun, Jie, Sun, Yongming, Pasta, Mauro, Zhou, Guangmin, Li, Yuzhang, Liu, Wei, Xiong, Feng, and Cui, Yi. 2016. "Entrapment of Polysulfides by a Black-Phosphorus-Modified Separator for Lithium-Sulfur Batteries". United States. doi:10.1002/adma.201602172.
@article{osti_1360180,
title = {Entrapment of Polysulfides by a Black-Phosphorus-Modified Separator for Lithium-Sulfur Batteries},
author = {Sun, Jie and Sun, Yongming and Pasta, Mauro and Zhou, Guangmin and Li, Yuzhang and Liu, Wei and Xiong, Feng and Cui, Yi},
abstractNote = {},
doi = {10.1002/adma.201602172},
journal = {Advanced Materials},
number = 44,
volume = 28,
place = {United States},
year = 2016,
month = 9
}
  • Lithium–sulfur (Li–S) battery is one of the most promising energy storage systems because of its high specific capacity of 1675 mAh g –1 based on sulfur. However, the rapid capacity degradation, mainly caused by polysulfide dissolution, remains a significant challenge prior to practical applications. This work demonstrates that a novel Ni-based metal organic framework (Ni-MOF), Ni 6(BTB) 4(BP) 3 (BTB = benzene-1,3,5-tribenzoate and BP = 4,4'-bipyridyl), can remarkably immobilize polysulfides within the cathode structure through physical and chemical interactions at molecular level. The capacity retention achieves up to 89% after 100 cycles at 0.1 C. Finally, the excellent performance ismore » attributed to the synergistic effects of the interwoven mesopores (~2.8 nm) and micropores (~1.4 nm) of Ni-MOF, which first provide an ideal matrix to confine polysulfides, and the strong interactions between Lewis acidic Ni(II) center and the polysulfide base, which significantly slow down the migration of soluble polysulfides out of the pores, leading to the excellent cycling performance of Ni-MOF/S composite.« less
  • Cited by 17
  • Copper powder was introduced into the lithium sulfur battery system to capture intermediate polysulfides and Cu xS (x = 1 or 2) species was generated depending on the chain length of polysulfides. This phenomenon was verified by X-ray absorption near edge structure technique. The results indicated that copper can be oxidized to CuS by Li 2S x (x ≥ 6), and a mixture of Cu 2S and CuS was obtained when x ranges from 3 to 6. While Cu 2S is eventually formed in the presence of Li 2S 3. After several cycles activation, the polysulfide-shuttle effect and self-discharge phenomenonmore » which hinder the application of lithium sulfur batteries are found nearly eliminated Further experiments demonstrated that in the case of Cu 2S generation, a high specific sulfur capacity of 1300 mAh g –1 could be delivered, corresponding to 77.6% sulfur utilization, while the Coulombic efficiency approximates around 100%. As a result, self-discharge experiment further demonstrated that polysulfides almost disappear in the electrolyte, which verified the polysulfide-capture capability of copper.« less