Abstract
Phase inversion is demonstrated as an effective method for engineering the microstructure of graphene films by exploiting the well-defined solubility characteristics of polymer dispersants. Drying of a tailored phase inversion ink containing a nonvolatile nonsolvent leads to gelation and subsequent pore formation, providing a promising strategy to tailor the porosity of the resulting graphene films. Graphene films with tunable porosity and electrical conductivity ranging from ∼1000 to ∼22 000 S/m are fabricated by this method. Moreover, this dry phase inversion technique is compatible with conventional coating and printing methods, allowing direct ink writing of porous graphene microsupercapacitor electrodes for energy storage applications. Overall, this method provides a straightforward and versatile strategy for engineering the microstructure of solution-processed nanomaterials.
| Original language | English |
|---|---|
| Pages (from-to) | 13745-13750 |
| Number of pages | 6 |
| Journal | Journal of Physical Chemistry C |
| Volume | 122 |
| Issue number | 25 |
| DOIs | |
| Publication status | Published - Jun 28 2018 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
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Tailoring the Porosity and Microstructure of Printed Graphene Electrodes via Polymer Phase Inversion. / Secor, Ethan B.; Dos Santos, Manuel H.; Wallace, Shay G.; Bradshaw, Nathan P.; Hersam, Mark C.
In: Journal of Physical Chemistry C, Vol. 122, No. 25, 28.06.2018, p. 13745-13750.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Tailoring the Porosity and Microstructure of Printed Graphene Electrodes via Polymer Phase Inversion
AU - Secor, Ethan B.
AU - Dos Santos, Manuel H.
AU - Wallace, Shay G.
AU - Bradshaw, Nathan P.
AU - Hersam, Mark C
PY - 2018/6/28
Y1 - 2018/6/28
N2 - Phase inversion is demonstrated as an effective method for engineering the microstructure of graphene films by exploiting the well-defined solubility characteristics of polymer dispersants. Drying of a tailored phase inversion ink containing a nonvolatile nonsolvent leads to gelation and subsequent pore formation, providing a promising strategy to tailor the porosity of the resulting graphene films. Graphene films with tunable porosity and electrical conductivity ranging from ∼1000 to ∼22 000 S/m are fabricated by this method. Moreover, this dry phase inversion technique is compatible with conventional coating and printing methods, allowing direct ink writing of porous graphene microsupercapacitor electrodes for energy storage applications. Overall, this method provides a straightforward and versatile strategy for engineering the microstructure of solution-processed nanomaterials.
AB - Phase inversion is demonstrated as an effective method for engineering the microstructure of graphene films by exploiting the well-defined solubility characteristics of polymer dispersants. Drying of a tailored phase inversion ink containing a nonvolatile nonsolvent leads to gelation and subsequent pore formation, providing a promising strategy to tailor the porosity of the resulting graphene films. Graphene films with tunable porosity and electrical conductivity ranging from ∼1000 to ∼22 000 S/m are fabricated by this method. Moreover, this dry phase inversion technique is compatible with conventional coating and printing methods, allowing direct ink writing of porous graphene microsupercapacitor electrodes for energy storage applications. Overall, this method provides a straightforward and versatile strategy for engineering the microstructure of solution-processed nanomaterials.
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U2 - 10.1021/acs.jpcc.8b00580
DO - 10.1021/acs.jpcc.8b00580
M3 - Article
VL - 122
SP - 13745
EP - 13750
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 25
ER -