High-Efficiency Thermoelectric Power Generation Enabled by Homogeneous Incorporation of MXene in (Bi,Sb)(2)Te-3 Matrix

doi:10.1002/aenm.201902986

	High-Efficiency Thermoelectric Power Generation Enabled by Homogeneous Incorporation of MXene in (Bi,Sb)(2)Te-3 Matrix
	Lu, Xiaofang; Zhang, Qihao; Liao, Jincheng; Chen, Hongyi; Fan, Yuchi; Xing, Juanjuan; Gu, Shijia; Huang, Jilong; Ma, Jiaxin; Wang, Jiancheng
刊名	ADVANCED ENERGY MATERIALS
	2019-12-31
关键词	bismuth telluride-based composites high-efficiency MXene self-assembly thermoelectric power generation
ISSN号	1614-6832
DOI	10.1002/aenm.201902986
文献子类	Article; Early Access
英文摘要	The (Bi,Sb)(2)Te-3 (BST) compounds have long been considered as the benchmark of thermoelectric (TE) materials near room temperature especially for refrigeration. However, their unsatisfactory TE performances in wide-temperature range severely restrict the large-scale applications for power generation. Here, using a self-assembly protocol to deliver a homogeneous dispersion of 2D inclusion in matrix, the first evidence is shown that incorporation of MXene (Ti3C2Tx) into BST can simultaneously achieve the improved power factor and greatly reduced thermal conductivity. The oxygen-terminated Ti3C2Tx with proper work function leads to highly increased electrical conductivity via hole injection and retained Seebeck coefficient due to the energy barrier scattering. Meanwhile, the alignment of Ti3C2Tx with the layered structure significantly suppresses the phonon transport, resulting in higher interfacial thermal resistance. Accordingly, a peak ZT of up to 1.3 and an average ZT value of 1.23 from 300 to 475 K are realized for the 1 vol% Ti3C2Tx/BST composite. Combined with the high-performance composite and rational device design, a record-high thermoelectric conversion efficiency of up to 7.8% is obtained under a temperature gradient of 237 K. These findings provide a robust and scalable protocol to incorporate MXene as a versatile 2D inclusion for improving the overall performance of TE materials toward high energy-conversion efficiency.
WOS关键词	PERFORMANCE ; NANOCOMPOSITES ; ZT ; SKUTTERUDITE ; OPTIMIZATION ; ENHANCEMENT ; BI2TE3
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27462]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Lu, Xiaofang,Zhang, Qihao,Liao, Jincheng,et al. High-Efficiency Thermoelectric Power Generation Enabled by Homogeneous Incorporation of MXene in (Bi,Sb)(2)Te-3 Matrix[J]. ADVANCED ENERGY MATERIALS,2019.
APA	Lu, Xiaofang.,Zhang, Qihao.,Liao, Jincheng.,Chen, Hongyi.,Fan, Yuchi.,...&Jiang, Wan.(2019).High-Efficiency Thermoelectric Power Generation Enabled by Homogeneous Incorporation of MXene in (Bi,Sb)(2)Te-3 Matrix.ADVANCED ENERGY MATERIALS.
MLA	Lu, Xiaofang,et al."High-Efficiency Thermoelectric Power Generation Enabled by Homogeneous Incorporation of MXene in (Bi,Sb)(2)Te-3 Matrix".ADVANCED ENERGY MATERIALS (2019).