Phonon engineering in thermal materials with nano-carbon dopants

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dc.contributor.authorStamper, Cen_AU
dc.contributor.authorCortie, DLen_AU
dc.contributor.authorNazrul-Islam, SMKen_AU
dc.contributor.authorRahman, Ren_AU
dc.contributor.authorYu, DHen_AU
dc.contributor.authorYang, Gen_AU
dc.contributor.authorAl-Mamun, Aen_AU
dc.contributor.authorWang, XLen_AU
dc.contributor.authorYue, ZJen_AU
dc.date.accessioned2025-02-14T04:20:06Zen_AU
dc.date.available2025-02-14T04:20:06Zen_AU
dc.date.issued2024-06-01en_AU
dc.date.statistics2025-01-29en_AU
dc.description.abstractThe unique geometric and thermal properties of carbon nanoparticles (NPs)—including nanotubes, graphene, and nanodiamonds—have led to their use as additives in many composite material systems. In this review, we investigate the mechanisms behind the altered thermal conductivity (κ) of thermoelectric (TE) and other thermal materials that have been composited with carbon NPs. We provide a comprehensive overview and analysis of the relevant theoretical and applied literature, including a detailed review of the available thermal conductivity data across five common classes of TE materials (Bi2Te3 variants, skutterudites, metal–oxide, SnSe, Cu2Se) in combination with carbon additives, including graphene, nanotubes, carbon black, carbon fiber, and C60. We argue that the effectiveness of carbon NPs in reducing κ in TE composites generally arises due to a combination of the presence of the carbon NP interfaces and significant changes in the microstructure of the host material due to compositing, such as suppressed grain growth and the introduction of pores, dislocations, and strain. Carbon NPs themselves are effective phonon scatterers in TE composites due to a significant mismatch between their high-frequency phonon distribution and the lower-frequency phonon distribution of the host material. While carbon NP doping has proven itself as an effective way to increase the performance of TE materials, there is still a significant amount of work to do to precisely understand the fundamental thermal transport mechanisms at play. Rigorous material characterization of nanocomposites and spectroscopic studies of the precise lattice dynamics will greatly aid the development of a fully quantitative, self-consistent model for the thermal conductivity of carbon nanocomposites. © 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)en_AU
dc.description.sponsorshipThe authors would like to acknowledge the insight kindly provided by Professor Chao Zhang through helpful discussions with the authors and the revision of this work. CS acknowledges support from the Australian Government Research Training Program (RTP) through the University of Wollongong, and the Postgraduate Research Award (PGRA) provided by the Australian Institute of Nuclear Science and Engineering. The work was also supported by the Australian Research Council (No. DP210101436).en_AU
dc.identifier.articlenumber021336en_AU
dc.identifier.citationStamper, C., Cortie, D., Nazrul-Islam, S. M. K., Rahman, M. R., Yu, D., Yang, G., Al-Mamun, A., Wang, X., & Yue, Z. (2024). Phonon engineering in thermal materials with nano-carbon dopants. Applied Physics Reviews, 11(2), 021336 doi:10.1063/5.0173675en_AU
dc.identifier.issn1931-9401en_AU
dc.identifier.issue2en_AU
dc.identifier.journaltitleApplied Physics Reviewsen_AU
dc.identifier.urihttps://doi.org/10.1063/5.0173675en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15998en_AU
dc.identifier.volume11en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherAIP Publishingen_AU
dc.subjectPhononsen_AU
dc.subjectCarbonen_AU
dc.subjectNanoparticlesen_AU
dc.subjectNanotubesen_AU
dc.subjectGrapheneen_AU
dc.subjectThermal conductivityen_AU
dc.subjectCopperen_AU
dc.subjectSeleniumen_AU
dc.titlePhonon engineering in thermal materials with nano-carbon dopantsen_AU
dc.typeJournal Articleen_AU
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