Reducing Kapitza resistance of graphene–paraffin interfaces by alkyl functionalisation

M. W. Boomstra; B. J. Geurts; A. V. Lyulin

doi:10.1016/j.cplett.2024.141341

Reducing Kapitza resistance of graphene–paraffin interfaces by alkyl functionalisation

M. W. Boomstra^*, B. J. Geurts, A. V. Lyulin

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

37 Downloads (Pure)

Abstract

Paraffin waxes are a promising material for heat storage. Improvement of the thermal conductivity can be obtained by adding graphene nanofillers, but interfacial thermal resistance (ITR) forms a problem. Reduction of ITR by functionalisation of the graphene was previously shown possible in the liquid state. For application in heat storage, the thermal properties in solid state are equally important. In the present study, the most optimal reduction of ITR in the solid state was shown for octyl functional groups; in both molten and solid samples, a striking reduction by 95% as compared to pristine graphene was achieved.

Original language	English
Article number	141341
Number of pages	6
Journal	Chemical physics letters
Volume	846
DOIs	https://doi.org/10.1016/j.cplett.2024.141341
Publication status	Published - Jul 2024

Keywords

Graphene nanofiller
Interfacial thermal resistance
Kapitza resistance
Molecular dynamics modelling
Nanocomposite
Paraffin wax
Phase change material

Access to Document

10.1016/j.cplett.2024.141341Licence: CC BY

ArticleFinal published version, 1.61 MBLicence: CC BY

Cite this

@article{a171301d741040cb886e63541ac92378,

title = "Reducing Kapitza resistance of graphene–paraffin interfaces by alkyl functionalisation",

abstract = "Paraffin waxes are a promising material for heat storage. Improvement of the thermal conductivity can be obtained by adding graphene nanofillers, but interfacial thermal resistance (ITR) forms a problem. Reduction of ITR by functionalisation of the graphene was previously shown possible in the liquid state. For application in heat storage, the thermal properties in solid state are equally important. In the present study, the most optimal reduction of ITR in the solid state was shown for octyl functional groups; in both molten and solid samples, a striking reduction by 95% as compared to pristine graphene was achieved.",

keywords = "Graphene nanofiller, Interfacial thermal resistance, Kapitza resistance, Molecular dynamics modelling, Nanocomposite, Paraffin wax, Phase change material",

author = "Boomstra, {M. W.} and Geurts, {B. J.} and Lyulin, {A. V.}",

note = "Publisher Copyright: {\textcopyright} 2024 The Author(s)",

year = "2024",

month = jul,

doi = "10.1016/j.cplett.2024.141341",

language = "English",

volume = "846",

journal = "Chemical physics letters",

issn = "0009-2614",

publisher = "Elsevier",

}

TY - JOUR

T1 - Reducing Kapitza resistance of graphene–paraffin interfaces by alkyl functionalisation

AU - Boomstra, M. W.

AU - Geurts, B. J.

AU - Lyulin, A. V.

PY - 2024/7

Y1 - 2024/7

N2 - Paraffin waxes are a promising material for heat storage. Improvement of the thermal conductivity can be obtained by adding graphene nanofillers, but interfacial thermal resistance (ITR) forms a problem. Reduction of ITR by functionalisation of the graphene was previously shown possible in the liquid state. For application in heat storage, the thermal properties in solid state are equally important. In the present study, the most optimal reduction of ITR in the solid state was shown for octyl functional groups; in both molten and solid samples, a striking reduction by 95% as compared to pristine graphene was achieved.

AB - Paraffin waxes are a promising material for heat storage. Improvement of the thermal conductivity can be obtained by adding graphene nanofillers, but interfacial thermal resistance (ITR) forms a problem. Reduction of ITR by functionalisation of the graphene was previously shown possible in the liquid state. For application in heat storage, the thermal properties in solid state are equally important. In the present study, the most optimal reduction of ITR in the solid state was shown for octyl functional groups; in both molten and solid samples, a striking reduction by 95% as compared to pristine graphene was achieved.

KW - Graphene nanofiller

KW - Interfacial thermal resistance

KW - Kapitza resistance

KW - Molecular dynamics modelling

KW - Nanocomposite

KW - Paraffin wax

KW - Phase change material

UR - http://www.scopus.com/inward/record.url?scp=85193501019&partnerID=8YFLogxK

U2 - 10.1016/j.cplett.2024.141341

DO - 10.1016/j.cplett.2024.141341

M3 - Article

AN - SCOPUS:85193501019

SN - 0009-2614

VL - 846

JO - Chemical physics letters

JF - Chemical physics letters

M1 - 141341

ER -

Reducing Kapitza resistance of graphene–paraffin interfaces by alkyl functionalisation

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this