Structural origins of enhanced capacity retention in novel copolymerized sulfur-based composite cathodes for high-energy density Li-S batteries

Vladimir P. Oleshko, Jenny Kim, Jennifer L. Schaefer, Steven D. Hudson, Christopher L. Soles, Adam G. Simmonds, Jared J. Griebel, Richard S Glass, Kookheon Char, Dong-Chul Pyun

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Poly[sulfur-random-1,3-diisopropenylbenzene (DIB)] copolymers synthesized via inverse vulcanization form electrochemically active polymers used as cathodes for high-energy density Li-S batteries, capable of enhanced capacity retention (1005 mAh/g at 100 cycles) and lifetimes of over 500 cycles. In this prospective, we demonstrate how analytical electron microscopy can be employed as a powerful tool to explore the origins of the enhanced capacity retention. We analyze morphological and compositional features when the copolymers, with DIB contents up to 50% by mass, are blended with carbon nanoparticles. Replacing the elemental sulfur with the copolymers improves the compatibility and interfacial contact between active sulfur compounds and conductive carbons. There also appears to be improvements of the cathode mechanical stability that leads to less cracking but preserving porosity. This compatibilization scheme through stabilized organosulfur copolymers represents an alternative strategy to the nanoscale encapsulation schemes which are often used to improve the cycle life in high-energy density Li-S batteries.

Original languageEnglish (US)
Pages (from-to)353-364
Number of pages12
JournalMRS Communications
Volume5
Issue number3
DOIs
StatePublished - Jul 13 2015

Fingerprint

Sulfur
Cathodes
Copolymers
Composite materials
Carbon
Sulfur Compounds
Vulcanization
Sulfur compounds
Compatibilizers
Mechanical stability
Encapsulation
Electron microscopy
Life cycle
Polymers
Porosity
Nanoparticles
Lithium sulfur batteries

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Structural origins of enhanced capacity retention in novel copolymerized sulfur-based composite cathodes for high-energy density Li-S batteries. / Oleshko, Vladimir P.; Kim, Jenny; Schaefer, Jennifer L.; Hudson, Steven D.; Soles, Christopher L.; Simmonds, Adam G.; Griebel, Jared J.; Glass, Richard S; Char, Kookheon; Pyun, Dong-Chul.

In: MRS Communications, Vol. 5, No. 3, 13.07.2015, p. 353-364.

Research output: Contribution to journalArticle

Oleshko, Vladimir P. ; Kim, Jenny ; Schaefer, Jennifer L. ; Hudson, Steven D. ; Soles, Christopher L. ; Simmonds, Adam G. ; Griebel, Jared J. ; Glass, Richard S ; Char, Kookheon ; Pyun, Dong-Chul. / Structural origins of enhanced capacity retention in novel copolymerized sulfur-based composite cathodes for high-energy density Li-S batteries. In: MRS Communications. 2015 ; Vol. 5, No. 3. pp. 353-364.
@article{2fbb4bfbffbf4f1fb7071a0c2943545d,
title = "Structural origins of enhanced capacity retention in novel copolymerized sulfur-based composite cathodes for high-energy density Li-S batteries",
abstract = "Poly[sulfur-random-1,3-diisopropenylbenzene (DIB)] copolymers synthesized via inverse vulcanization form electrochemically active polymers used as cathodes for high-energy density Li-S batteries, capable of enhanced capacity retention (1005 mAh/g at 100 cycles) and lifetimes of over 500 cycles. In this prospective, we demonstrate how analytical electron microscopy can be employed as a powerful tool to explore the origins of the enhanced capacity retention. We analyze morphological and compositional features when the copolymers, with DIB contents up to 50{\%} by mass, are blended with carbon nanoparticles. Replacing the elemental sulfur with the copolymers improves the compatibility and interfacial contact between active sulfur compounds and conductive carbons. There also appears to be improvements of the cathode mechanical stability that leads to less cracking but preserving porosity. This compatibilization scheme through stabilized organosulfur copolymers represents an alternative strategy to the nanoscale encapsulation schemes which are often used to improve the cycle life in high-energy density Li-S batteries.",
author = "Oleshko, {Vladimir P.} and Jenny Kim and Schaefer, {Jennifer L.} and Hudson, {Steven D.} and Soles, {Christopher L.} and Simmonds, {Adam G.} and Griebel, {Jared J.} and Glass, {Richard S} and Kookheon Char and Dong-Chul Pyun",
year = "2015",
month = "7",
day = "13",
doi = "10.1557/mrc.2015.41",
language = "English (US)",
volume = "5",
pages = "353--364",
journal = "MRS Communications",
issn = "2159-6859",
publisher = "Cambridge University Press",
number = "3",

}

TY - JOUR

T1 - Structural origins of enhanced capacity retention in novel copolymerized sulfur-based composite cathodes for high-energy density Li-S batteries

AU - Oleshko, Vladimir P.

AU - Kim, Jenny

AU - Schaefer, Jennifer L.

AU - Hudson, Steven D.

AU - Soles, Christopher L.

AU - Simmonds, Adam G.

AU - Griebel, Jared J.

AU - Glass, Richard S

AU - Char, Kookheon

AU - Pyun, Dong-Chul

PY - 2015/7/13

Y1 - 2015/7/13

N2 - Poly[sulfur-random-1,3-diisopropenylbenzene (DIB)] copolymers synthesized via inverse vulcanization form electrochemically active polymers used as cathodes for high-energy density Li-S batteries, capable of enhanced capacity retention (1005 mAh/g at 100 cycles) and lifetimes of over 500 cycles. In this prospective, we demonstrate how analytical electron microscopy can be employed as a powerful tool to explore the origins of the enhanced capacity retention. We analyze morphological and compositional features when the copolymers, with DIB contents up to 50% by mass, are blended with carbon nanoparticles. Replacing the elemental sulfur with the copolymers improves the compatibility and interfacial contact between active sulfur compounds and conductive carbons. There also appears to be improvements of the cathode mechanical stability that leads to less cracking but preserving porosity. This compatibilization scheme through stabilized organosulfur copolymers represents an alternative strategy to the nanoscale encapsulation schemes which are often used to improve the cycle life in high-energy density Li-S batteries.

AB - Poly[sulfur-random-1,3-diisopropenylbenzene (DIB)] copolymers synthesized via inverse vulcanization form electrochemically active polymers used as cathodes for high-energy density Li-S batteries, capable of enhanced capacity retention (1005 mAh/g at 100 cycles) and lifetimes of over 500 cycles. In this prospective, we demonstrate how analytical electron microscopy can be employed as a powerful tool to explore the origins of the enhanced capacity retention. We analyze morphological and compositional features when the copolymers, with DIB contents up to 50% by mass, are blended with carbon nanoparticles. Replacing the elemental sulfur with the copolymers improves the compatibility and interfacial contact between active sulfur compounds and conductive carbons. There also appears to be improvements of the cathode mechanical stability that leads to less cracking but preserving porosity. This compatibilization scheme through stabilized organosulfur copolymers represents an alternative strategy to the nanoscale encapsulation schemes which are often used to improve the cycle life in high-energy density Li-S batteries.

UR - http://www.scopus.com/inward/record.url?scp=84948580336&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84948580336&partnerID=8YFLogxK

U2 - 10.1557/mrc.2015.41

DO - 10.1557/mrc.2015.41

M3 - Article

VL - 5

SP - 353

EP - 364

JO - MRS Communications

JF - MRS Communications

SN - 2159-6859

IS - 3

ER -