Elemental Sulfur and Molybdenum Disulfide Composites for Li-S Batteries with Long Cycle Life and High-Rate Capability

Philip T. Dirlam, Jungjin Park, Adam G. Simmonds, Kenneth Domanik, Clay B. Arrington, Jennifer L. Schaefer, Vladimir P. Oleshko, Tristan S. Kleine, Kookheon Char, Richard S Glass, Christopher L. Soles, Chunjoong Kim, Nicola Pinna, Yung Eun Sung, Dong-Chul Pyun

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

The practical implementation of Li-S technology has been hindered by short cycle life and poor rate capability owing to deleterious effects resulting from the varied solubilities of different Li polysulfide redox products. Here, we report the preparation and utilization of composites with a sulfur-rich matrix and molybdenum disulfide (MoS2) particulate inclusions as Li-S cathode materials with the capability to mitigate the dissolution of the Li polysulfide redox products via the MoS2 inclusions acting as "polysulfide anchors". In situ composite formation was completed via a facile, one-pot method with commercially available starting materials. The composites were afforded by first dispersing MoS2 directly in liquid elemental sulfur (S8) with sequential polymerization of the sulfur phase via thermal ring opening polymerization or copolymerization via inverse vulcanization. For the practical utility of this system to be highlighted, it was demonstrated that the composite formation methodology was amenable to larger scale processes with composites easily prepared in 100 g batches. Cathodes fabricated with the high sulfur content composites as the active material afforded Li-S cells that exhibited extended cycle lifetimes of up to 1000 cycles with low capacity decay (0.07% per cycle) and demonstrated exceptional rate capability with the delivery of reversible capacity up to 500 mAh/g at 5 C.

Original languageEnglish (US)
Pages (from-to)13437-13448
Number of pages12
JournalACS Applied Materials and Interfaces
Volume8
Issue number21
DOIs
StatePublished - Jun 1 2016

Fingerprint

Sulfur
Molybdenum
Life cycle
Polysulfides
Composite materials
Cathodes
Vulcanization
Ring opening polymerization
Anchors
Copolymerization
Lithium sulfur batteries
molybdenum disulfide
Dissolution
Solubility
Polymerization
Liquids
polysulfide

Keywords

  • elemental sulfur
  • high-rate
  • inverse vulcanization
  • Li-S
  • lithium-sulfur
  • molybdenum disulfide
  • MoS
  • rechargeable battery

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Elemental Sulfur and Molybdenum Disulfide Composites for Li-S Batteries with Long Cycle Life and High-Rate Capability. / Dirlam, Philip T.; Park, Jungjin; Simmonds, Adam G.; Domanik, Kenneth; Arrington, Clay B.; Schaefer, Jennifer L.; Oleshko, Vladimir P.; Kleine, Tristan S.; Char, Kookheon; Glass, Richard S; Soles, Christopher L.; Kim, Chunjoong; Pinna, Nicola; Sung, Yung Eun; Pyun, Dong-Chul.

In: ACS Applied Materials and Interfaces, Vol. 8, No. 21, 01.06.2016, p. 13437-13448.

Research output: Contribution to journalArticle

Dirlam, PT, Park, J, Simmonds, AG, Domanik, K, Arrington, CB, Schaefer, JL, Oleshko, VP, Kleine, TS, Char, K, Glass, RS, Soles, CL, Kim, C, Pinna, N, Sung, YE & Pyun, D-C 2016, 'Elemental Sulfur and Molybdenum Disulfide Composites for Li-S Batteries with Long Cycle Life and High-Rate Capability', ACS Applied Materials and Interfaces, vol. 8, no. 21, pp. 13437-13448. https://doi.org/10.1021/acsami.6b03200
Dirlam, Philip T. ; Park, Jungjin ; Simmonds, Adam G. ; Domanik, Kenneth ; Arrington, Clay B. ; Schaefer, Jennifer L. ; Oleshko, Vladimir P. ; Kleine, Tristan S. ; Char, Kookheon ; Glass, Richard S ; Soles, Christopher L. ; Kim, Chunjoong ; Pinna, Nicola ; Sung, Yung Eun ; Pyun, Dong-Chul. / Elemental Sulfur and Molybdenum Disulfide Composites for Li-S Batteries with Long Cycle Life and High-Rate Capability. In: ACS Applied Materials and Interfaces. 2016 ; Vol. 8, No. 21. pp. 13437-13448.
@article{dcfe8848889d4d2b945e2c541557656d,
title = "Elemental Sulfur and Molybdenum Disulfide Composites for Li-S Batteries with Long Cycle Life and High-Rate Capability",
abstract = "The practical implementation of Li-S technology has been hindered by short cycle life and poor rate capability owing to deleterious effects resulting from the varied solubilities of different Li polysulfide redox products. Here, we report the preparation and utilization of composites with a sulfur-rich matrix and molybdenum disulfide (MoS2) particulate inclusions as Li-S cathode materials with the capability to mitigate the dissolution of the Li polysulfide redox products via the MoS2 inclusions acting as {"}polysulfide anchors{"}. In situ composite formation was completed via a facile, one-pot method with commercially available starting materials. The composites were afforded by first dispersing MoS2 directly in liquid elemental sulfur (S8) with sequential polymerization of the sulfur phase via thermal ring opening polymerization or copolymerization via inverse vulcanization. For the practical utility of this system to be highlighted, it was demonstrated that the composite formation methodology was amenable to larger scale processes with composites easily prepared in 100 g batches. Cathodes fabricated with the high sulfur content composites as the active material afforded Li-S cells that exhibited extended cycle lifetimes of up to 1000 cycles with low capacity decay (0.07{\%} per cycle) and demonstrated exceptional rate capability with the delivery of reversible capacity up to 500 mAh/g at 5 C.",
keywords = "elemental sulfur, high-rate, inverse vulcanization, Li-S, lithium-sulfur, molybdenum disulfide, MoS, rechargeable battery",
author = "Dirlam, {Philip T.} and Jungjin Park and Simmonds, {Adam G.} and Kenneth Domanik and Arrington, {Clay B.} and Schaefer, {Jennifer L.} and Oleshko, {Vladimir P.} and Kleine, {Tristan S.} and Kookheon Char and Glass, {Richard S} and Soles, {Christopher L.} and Chunjoong Kim and Nicola Pinna and Sung, {Yung Eun} and Dong-Chul Pyun",
year = "2016",
month = "6",
day = "1",
doi = "10.1021/acsami.6b03200",
language = "English (US)",
volume = "8",
pages = "13437--13448",
journal = "ACS applied materials & interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "21",

}

TY - JOUR

T1 - Elemental Sulfur and Molybdenum Disulfide Composites for Li-S Batteries with Long Cycle Life and High-Rate Capability

AU - Dirlam, Philip T.

AU - Park, Jungjin

AU - Simmonds, Adam G.

AU - Domanik, Kenneth

AU - Arrington, Clay B.

AU - Schaefer, Jennifer L.

AU - Oleshko, Vladimir P.

AU - Kleine, Tristan S.

AU - Char, Kookheon

AU - Glass, Richard S

AU - Soles, Christopher L.

AU - Kim, Chunjoong

AU - Pinna, Nicola

AU - Sung, Yung Eun

AU - Pyun, Dong-Chul

PY - 2016/6/1

Y1 - 2016/6/1

N2 - The practical implementation of Li-S technology has been hindered by short cycle life and poor rate capability owing to deleterious effects resulting from the varied solubilities of different Li polysulfide redox products. Here, we report the preparation and utilization of composites with a sulfur-rich matrix and molybdenum disulfide (MoS2) particulate inclusions as Li-S cathode materials with the capability to mitigate the dissolution of the Li polysulfide redox products via the MoS2 inclusions acting as "polysulfide anchors". In situ composite formation was completed via a facile, one-pot method with commercially available starting materials. The composites were afforded by first dispersing MoS2 directly in liquid elemental sulfur (S8) with sequential polymerization of the sulfur phase via thermal ring opening polymerization or copolymerization via inverse vulcanization. For the practical utility of this system to be highlighted, it was demonstrated that the composite formation methodology was amenable to larger scale processes with composites easily prepared in 100 g batches. Cathodes fabricated with the high sulfur content composites as the active material afforded Li-S cells that exhibited extended cycle lifetimes of up to 1000 cycles with low capacity decay (0.07% per cycle) and demonstrated exceptional rate capability with the delivery of reversible capacity up to 500 mAh/g at 5 C.

AB - The practical implementation of Li-S technology has been hindered by short cycle life and poor rate capability owing to deleterious effects resulting from the varied solubilities of different Li polysulfide redox products. Here, we report the preparation and utilization of composites with a sulfur-rich matrix and molybdenum disulfide (MoS2) particulate inclusions as Li-S cathode materials with the capability to mitigate the dissolution of the Li polysulfide redox products via the MoS2 inclusions acting as "polysulfide anchors". In situ composite formation was completed via a facile, one-pot method with commercially available starting materials. The composites were afforded by first dispersing MoS2 directly in liquid elemental sulfur (S8) with sequential polymerization of the sulfur phase via thermal ring opening polymerization or copolymerization via inverse vulcanization. For the practical utility of this system to be highlighted, it was demonstrated that the composite formation methodology was amenable to larger scale processes with composites easily prepared in 100 g batches. Cathodes fabricated with the high sulfur content composites as the active material afforded Li-S cells that exhibited extended cycle lifetimes of up to 1000 cycles with low capacity decay (0.07% per cycle) and demonstrated exceptional rate capability with the delivery of reversible capacity up to 500 mAh/g at 5 C.

KW - elemental sulfur

KW - high-rate

KW - inverse vulcanization

KW - Li-S

KW - lithium-sulfur

KW - molybdenum disulfide

KW - MoS

KW - rechargeable battery

UR - http://www.scopus.com/inward/record.url?scp=84973351114&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84973351114&partnerID=8YFLogxK

U2 - 10.1021/acsami.6b03200

DO - 10.1021/acsami.6b03200

M3 - Article

AN - SCOPUS:84973351114

VL - 8

SP - 13437

EP - 13448

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

SN - 1944-8244

IS - 21

ER -