Measurement and Analysis of Thermal Conductivity of Ti₃C₂T(x) MXene Films.
Measurement and Analysis of Thermal Conductivity of Ti₃C₂T(x) MXene Films.
复制标题
Ti3C2TX MXene 薄膜热导率的测量与分析
DOI：
10.3390/ma11091701
复制
发表时间：
2018-09-13
期刊：
影响因子：
--
通讯作者：
Lin J
中科院分区：
文献类型：
--
作者：
Chen L;Shi X;Yu N;Zhang X;Du X;Lin J
一种名为“MXene”的新型二维材料最近受到了极大的研究兴趣，因为它们在电池、超级电容器和电子设备中表现出了巨大的应用潜力。然而，对其热性能的研究仍然非常有限。本文采用真空辅助过滤的方法，制备了Ti3C2Tx薄膜。采用最先进的t型法测定了Ti3C2Tx薄膜的导热性和导电性。结果表明：薄膜的有效导热系数从80 K时的1.26 W·m−1·K−1增加到290 K时的2.84 W·m−1·K−1，而在相同温度范围内，薄膜的电导率保持在12800 Ω−1·m−1。采用热阻模型对Ti3C2Tx薄片的固有导热系数进行了评价，估计其固有导热系数在数十~数百W·m−1·K−1之间。
A new class of 2D materials named “MXene” has recently received significant research interest as they have demonstrated great potential for the applications in batteries, supercapacitors, and electronic devices. However, the research on their thermal properties is still very limited. In this work, Ti3C2Tx films were prepared by the vacuum-assisted filtration of delaminated nano-flake Ti3C2Tx MXenes. The thermal and electrical conductivity of the Ti3C2Tx films were measured by the state-of-the-art T-type method. The results showed that the effective thermal conductivity of the films increased from 1.26 W·m−1·K−1 at 80 K to 2.84 W·m−1·K−1 at 290 K, while the electrical conductivity remained at 12,800 Ω−1·m−1 for the same temperature range. Thermal resistance model was applied to evaluate the inherent thermal conductivity of the Ti3C2Tx flakes, which was estimated to be in the range of tens to hundreds W·m−1·K−1.