Karthikeyan, V., Theja, V.C.S., De Souza, M.M. orcid.org/0000-0002-7804-7154 et al. (1 more author) (2022) Hierarchically interlaced 2D copper iodide/MXene composite for high thermoelectric performance. physica status solidi (RRL) – Rapid Research Letters, 16 (1). 2100419. ISSN 1862-6254
Abstract
Hierarchical layered architecture in thermoelectric materials works as an ad hoc methodology for strengthening the unique inherent properties. Here, we demonstrate an excellent thermoelectric behavior in novel 2D copper iodide nanoflakes by compositing with Ti3C2 MXene nanoinclusions. The interlaced architecture of CuI/Ti3C2 composite lifts the electrical conductivity over two orders by efficient charge transport mechanisms. The thermal conductivity of CuI/Ti3C2 composite are reduced by drastic suppression of mid-and high-frequency phonons by interfacial energy barrier scattering. Our structural engineering approach yields a massive power factor of 225 µW m-1 K-2 and a figure of merit value of 0.48 in CuI/5 vol.% Ti3C2 composite. We establish a straightforward approach of tuning the figure of merit in earth-abundant, non-toxic thermoelectric materials to develop future sustainable energy sources.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 Wiley-VCH GmbH, Weinheim. This is an author-produced version of a paper subsequently published in physica status solidi (RRL) - Rapid Research Letters. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | copper Iodide; layered hierarchy; MXene; nanoinclusion; thermoelectrics |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 10 Sep 2021 10:13 |
Last Modified: | 31 Oct 2022 01:13 |
Status: | Published |
Publisher: | Wiley |
Refereed: | Yes |
Identification Number: | 10.1002/pssr.202100419 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:178067 |