Premium
Constructing Layered MXene/CNTs Composite Film with 2D–3D Sandwich Structure for High Thermoelectric Performance
Author(s) -
Ding Wenjun,
Liu Peng,
Bai Zuzhi,
Wang Yeye,
Liu Guoqiang,
Jiang Qinglin,
Jiang Fengxing,
Liu Peipei,
Liu Congcong,
Xu Jingkun
Publication year - 2020
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.202001340
Subject(s) - mxenes , materials science , thermoelectric effect , composite number , seebeck coefficient , heterojunction , thermoelectric materials , composite material , electrical resistivity and conductivity , carbon nanotube , nanotechnology , optoelectronics , thermal conductivity , electrical engineering , physics , engineering , thermodynamics
Reasonable heterostructure design can effectively improve the thermoelectric performance of composite materials. High‐conductivity and high‐stability MXenes are expected for the application of thermoelectric conversion benefiting from their diverse electronic properties. In this work, the 2D MXene and 1D SWCNTs are employed to construct layered composite films with 2D–3D sandwich structures in the vertical direction by the wet‐chemical assembly strategy. As a result, sandwich Ti 3 C 2 T x –SWCNTs–Ti 3 C 2 T x film shows a higher power factor than that of Ti 3 C 2 T x /SWCNTs film with interlaced structure, further 25 times higher than that of Ti 3 C 2 T x film, which mainly due to the considerable electrical conductivity (750.9 S cm −1 ) and enhanced Seebeck (−32.2 µV K −1 ) coefficient. This study provides a feasible and valuable reference for expanding the application field of MXenes‐based materials and reasonably improving their thermoelectric conversion performance.