Ion-Conductive, Viscosity-Tunable Hexagonal Boron Nitride Nanosheet Inks

Ana C.M. de Moraes, Woo Jin Hyun, Jung Woo T. Seo, Julia R. Downing, Jin Myoung Lim, Mark C Hersam

Research output: Contribution to journalArticle

Abstract

Liquid-phase exfoliation of layered solids holds promise for the scalable production of 2D nanosheets. When combined with suitable solvents and stabilizing polymers, the rheology of the resulting nanosheet dispersions can be tuned for a variety of additive manufacturing methods. While significant progress is made in the development of electrically conductive nanosheet inks, minimal effort is applied to ion-conductive nanosheet inks despite their central role in energy storage applications. Here, the formulation of viscosity-tunable hexagonal boron nitride (hBN) inks compatible with a wide range of printing methods that span the spectrum from low-viscosity inkjet printing to high-viscosity blade coating is demonstrated. The inks are prepared by liquid-phase exfoliation with ethyl cellulose as the polymer dispersant and stabilizer. Thermal annealing of the printed structures volatilizes the polymer, resulting in a porous microstructure and the formation of a nanoscale carbonaceous coating on the hBN nanosheets, which promotes high wettability to battery electrolytes. The final result is a printed hBN nanosheet film that possesses high ionic conductivity, chemical and thermal stability, and electrically insulating character, which are ideal characteristics for printable battery components such as separators. Indeed, lithium-ion battery cells based on printed hBN separators reveal enhanced electrochemical performance that exceeds commercial polymer separators.

Original languageEnglish
Article number1902245
JournalAdvanced Functional Materials
DOIs
Publication statusPublished - Jan 1 2019

Fingerprint

Boron nitride
Nanosheets
inks
boron nitrides
Ink
separators
Viscosity
Ions
viscosity
electric batteries
Polymers
polymers
Separators
printing
ions
liquid phases
coatings
Printing
3D printers
energy storage

Keywords

  • blade coating
  • ethyl cellulose
  • hBN
  • inkjet printing
  • liquid-phase exfoliation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Electrochemistry

Cite this

Ion-Conductive, Viscosity-Tunable Hexagonal Boron Nitride Nanosheet Inks. / de Moraes, Ana C.M.; Hyun, Woo Jin; Seo, Jung Woo T.; Downing, Julia R.; Lim, Jin Myoung; Hersam, Mark C.

In: Advanced Functional Materials, 01.01.2019.

Research output: Contribution to journalArticle

de Moraes, Ana C.M. ; Hyun, Woo Jin ; Seo, Jung Woo T. ; Downing, Julia R. ; Lim, Jin Myoung ; Hersam, Mark C. / Ion-Conductive, Viscosity-Tunable Hexagonal Boron Nitride Nanosheet Inks. In: Advanced Functional Materials. 2019.
@article{ec0323efd8004d62a37795dfacee9b80,
title = "Ion-Conductive, Viscosity-Tunable Hexagonal Boron Nitride Nanosheet Inks",
abstract = "Liquid-phase exfoliation of layered solids holds promise for the scalable production of 2D nanosheets. When combined with suitable solvents and stabilizing polymers, the rheology of the resulting nanosheet dispersions can be tuned for a variety of additive manufacturing methods. While significant progress is made in the development of electrically conductive nanosheet inks, minimal effort is applied to ion-conductive nanosheet inks despite their central role in energy storage applications. Here, the formulation of viscosity-tunable hexagonal boron nitride (hBN) inks compatible with a wide range of printing methods that span the spectrum from low-viscosity inkjet printing to high-viscosity blade coating is demonstrated. The inks are prepared by liquid-phase exfoliation with ethyl cellulose as the polymer dispersant and stabilizer. Thermal annealing of the printed structures volatilizes the polymer, resulting in a porous microstructure and the formation of a nanoscale carbonaceous coating on the hBN nanosheets, which promotes high wettability to battery electrolytes. The final result is a printed hBN nanosheet film that possesses high ionic conductivity, chemical and thermal stability, and electrically insulating character, which are ideal characteristics for printable battery components such as separators. Indeed, lithium-ion battery cells based on printed hBN separators reveal enhanced electrochemical performance that exceeds commercial polymer separators.",
keywords = "blade coating, ethyl cellulose, hBN, inkjet printing, liquid-phase exfoliation",
author = "{de Moraes}, {Ana C.M.} and Hyun, {Woo Jin} and Seo, {Jung Woo T.} and Downing, {Julia R.} and Lim, {Jin Myoung} and Hersam, {Mark C}",
year = "2019",
month = "1",
day = "1",
doi = "10.1002/adfm.201902245",
language = "English",
journal = "Advanced Functional Materials",
issn = "1616-301X",
publisher = "Wiley-VCH Verlag",

}

TY - JOUR

T1 - Ion-Conductive, Viscosity-Tunable Hexagonal Boron Nitride Nanosheet Inks

AU - de Moraes, Ana C.M.

AU - Hyun, Woo Jin

AU - Seo, Jung Woo T.

AU - Downing, Julia R.

AU - Lim, Jin Myoung

AU - Hersam, Mark C

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Liquid-phase exfoliation of layered solids holds promise for the scalable production of 2D nanosheets. When combined with suitable solvents and stabilizing polymers, the rheology of the resulting nanosheet dispersions can be tuned for a variety of additive manufacturing methods. While significant progress is made in the development of electrically conductive nanosheet inks, minimal effort is applied to ion-conductive nanosheet inks despite their central role in energy storage applications. Here, the formulation of viscosity-tunable hexagonal boron nitride (hBN) inks compatible with a wide range of printing methods that span the spectrum from low-viscosity inkjet printing to high-viscosity blade coating is demonstrated. The inks are prepared by liquid-phase exfoliation with ethyl cellulose as the polymer dispersant and stabilizer. Thermal annealing of the printed structures volatilizes the polymer, resulting in a porous microstructure and the formation of a nanoscale carbonaceous coating on the hBN nanosheets, which promotes high wettability to battery electrolytes. The final result is a printed hBN nanosheet film that possesses high ionic conductivity, chemical and thermal stability, and electrically insulating character, which are ideal characteristics for printable battery components such as separators. Indeed, lithium-ion battery cells based on printed hBN separators reveal enhanced electrochemical performance that exceeds commercial polymer separators.

AB - Liquid-phase exfoliation of layered solids holds promise for the scalable production of 2D nanosheets. When combined with suitable solvents and stabilizing polymers, the rheology of the resulting nanosheet dispersions can be tuned for a variety of additive manufacturing methods. While significant progress is made in the development of electrically conductive nanosheet inks, minimal effort is applied to ion-conductive nanosheet inks despite their central role in energy storage applications. Here, the formulation of viscosity-tunable hexagonal boron nitride (hBN) inks compatible with a wide range of printing methods that span the spectrum from low-viscosity inkjet printing to high-viscosity blade coating is demonstrated. The inks are prepared by liquid-phase exfoliation with ethyl cellulose as the polymer dispersant and stabilizer. Thermal annealing of the printed structures volatilizes the polymer, resulting in a porous microstructure and the formation of a nanoscale carbonaceous coating on the hBN nanosheets, which promotes high wettability to battery electrolytes. The final result is a printed hBN nanosheet film that possesses high ionic conductivity, chemical and thermal stability, and electrically insulating character, which are ideal characteristics for printable battery components such as separators. Indeed, lithium-ion battery cells based on printed hBN separators reveal enhanced electrochemical performance that exceeds commercial polymer separators.

KW - blade coating

KW - ethyl cellulose

KW - hBN

KW - inkjet printing

KW - liquid-phase exfoliation

UR - http://www.scopus.com/inward/record.url?scp=85070104369&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85070104369&partnerID=8YFLogxK

U2 - 10.1002/adfm.201902245

DO - 10.1002/adfm.201902245

M3 - Article

AN - SCOPUS:85070104369

JO - Advanced Functional Materials

JF - Advanced Functional Materials

SN - 1616-301X

M1 - 1902245

ER -