MXene nanosheet/organics superlattice for flexible thermoelectrics

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dc.check.date2023-11-01
dc.check.infoAccess to this article is restricted until 12 months after publication by request of the publisher.en
dc.contributor.authorWang, Zhiwen
dc.contributor.authorChen, Mengran
dc.contributor.authorCao, Zhining
dc.contributor.authorLiang, Jia
dc.contributor.authorLiu, Zhenguo
dc.contributor.authorXuan, Yuxue
dc.contributor.authorPan, Lin
dc.contributor.authorRazeeb, Kafil M.
dc.contributor.authorWang, Yifeng
dc.contributor.authorWan, Chunlei
dc.contributor.authorZong, Peng-an
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderHorizon 2020en
dc.contributor.funderEuropean Regional Development Funden
dc.contributor.funderNatural Science Foundation of Jiangsu Provinceen
dc.contributor.funderNational Natural Science Foundation of Chinaen
dc.contributor.funderState Key Laboratory of High Performance Ceramics and Superfine Microstructureen
dc.contributor.funderTsinghua Universityen
dc.contributor.funderPriority Academic Program Development of Jiangsu Higher Education Institutionsen
dc.date.accessioned2022-11-24T13:42:45Z
dc.date.available2022-11-24T13:42:45Z
dc.date.issued2022-11-01
dc.date.updated2022-11-24T10:04:27Z
dc.description.abstractTwo-dimensional (2D) materials with outstanding electronic transport properties are rigid against bending because of strong in-plane covalent bonding and intrinsically flexible because of the lack of out-of-plane constraint and thus are considered to be promising for flexible thermoelectrics (TEs). As a typical 2D material, MXene, however, exhibited a restricted TE performance because the termination groups and guest molecules in MXene nanosheets introduced by acid etching and reassembly deteriorate intra/interflake conduction. This work realized increases in both the carrier concentration and intra/interflake mobility by the construction of a MXene nanosheet/organic superlattice (SL) and composition engineering, attributed to electron injection, intercoupling strengthening, and defect reduction at the nanosheet edges. An electrical conductivity increased by 5 times, to 2.7 × 105 S m–1, led to power factors of up to ∼33 μW m–1 K–2, which is above the state-of-the-art for similar materials, almost by a factor of 10. A TE module comprising four SL film legs could yield 58.6 nW power at a temperature gradient of 50 K. Additionally, both the annealed film and the corresponding module exhibited excellent reproducibility and stability. Our results provide a strategy to tailor the TE performance of 2D-material films through SL construction and composition engineering.en
dc.description.sponsorshipNatural Science Foundation of Jiangsu Province (Grant BK20211264; Natural Science Fund for Colleges and Universities in Jiangsu Province Grant 21KJB430023); National Natural Science Foundation of China (Grant 51702183); State Key Laboratory of High Performance Ceramics and Superfine Microstructure (Opening Project Grant SKL202004SIC); NSAF (No.U2230131); Tsinghua University (State Key Laboratory of New Ceramic and Fine Processing Opening Project Grant KF202207)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationWang, Z., Chen, M., Cao, Z., Liang, J., Liu, Z., Xuan, Y., Pan, L., Razeeb, K. M., Wang, Y., Wan, C. and Zong, P. (2022) 'MXene nanosheet/organics superlattice for flexible thermoelectrics', ACS Applied Nano Materials. doi: 10.1021/acsanm.2c03813en
dc.identifier.doi10.1021/acsanm.2c03813en
dc.identifier.eissn2574-0970
dc.identifier.journaltitleACS Applied Nano Materialsen
dc.identifier.urihttps://hdl.handle.net/10468/13883
dc.language.isoenen
dc.publisherACS Publicationsen
dc.relation.projectinfo:eu-repo/grantAgreement/EC/H2020::RIA/825114/EU/Smart Autonomous Multi Modal Sensors for Vital Signs Monitoring/SmartVistaen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Investigator Programme/15/IA/3160/IE/Thermoelectric efficiency of IV-VI and V2-VI3 materials driven near phase transitions/en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2276/IE/I-PIC Irish Photonic Integration Research Centre/en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/13/RC/2077/IE/CONNECT: The Centre for Future Networks & Communications/en
dc.rights© 2022, American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Nano Materials, after technical editing by the publisher. To access the final edited and published work see: https://doi.org/10.1021/acsanm.2c03813en
dc.subjectFlexibilityen
dc.subjectIntercalationen
dc.subjectMXeneen
dc.subjectNanosheeten
dc.subjectSuperlatticeen
dc.subjectThermoelectricen
dc.titleMXene nanosheet/organics superlattice for flexible thermoelectricsen
dc.typeArticle (peer-reviewed)en
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